6LOWPAN GENERIC (BTLE/IEEE 802.15.4)
M: Alexander Aring <alex.aring@gmail.com>
-M: Jukka Rissanen <jukka.rissanen@linux.intel.com>
L: linux-bluetooth@vger.kernel.org
L: linux-wpan@vger.kernel.org
S: Maintained
F: include/uapi/linux/virtio_9p.h
F: net/9p/
+A64FX DIAG DRIVER
+M: Hitomi Hasegawa <hasegawa-hitomi@fujitsu.com>
+S: Supported
+F: drivers/soc/fujitsu/a64fx-diag.c
+
A8293 MEDIA DRIVER
M: Antti Palosaari <crope@iki.fi>
L: linux-media@vger.kernel.org
F: drivers/hwmon/abituguru3.c
ACCES 104-DIO-48E GPIO DRIVER
-M: William Breathitt Gray <vilhelm.gray@gmail.com>
+M: William Breathitt Gray <william.gray@linaro.org>
L: linux-gpio@vger.kernel.org
S: Maintained
F: drivers/gpio/gpio-104-dio-48e.c
ACCES 104-IDI-48 GPIO DRIVER
-M: "William Breathitt Gray" <vilhelm.gray@gmail.com>
+M: William Breathitt Gray <william.gray@linaro.org>
L: linux-gpio@vger.kernel.org
S: Maintained
F: drivers/gpio/gpio-104-idi-48.c
ACCES 104-IDIO-16 GPIO DRIVER
-M: "William Breathitt Gray" <vilhelm.gray@gmail.com>
+M: William Breathitt Gray <william.gray@linaro.org>
L: linux-gpio@vger.kernel.org
S: Maintained
F: drivers/gpio/gpio-104-idio-16.c
ACCES 104-QUAD-8 DRIVER
-M: William Breathitt Gray <vilhelm.gray@gmail.com>
-M: Syed Nayyar Waris <syednwaris@gmail.com>
+M: William Breathitt Gray <william.gray@linaro.org>
L: linux-iio@vger.kernel.org
S: Maintained
F: drivers/counter/104-quad-8.c
ACCES PCI-IDIO-16 GPIO DRIVER
-M: William Breathitt Gray <vilhelm.gray@gmail.com>
+M: William Breathitt Gray <william.gray@linaro.org>
L: linux-gpio@vger.kernel.org
S: Maintained
F: drivers/gpio/gpio-pci-idio-16.c
ACCES PCIe-IDIO-24 GPIO DRIVER
-M: William Breathitt Gray <vilhelm.gray@gmail.com>
+M: William Breathitt Gray <william.gray@linaro.org>
L: linux-gpio@vger.kernel.org
S: Maintained
F: drivers/gpio/gpio-pcie-idio-24.c
ACPI VIOT DRIVER
M: Jean-Philippe Brucker <jean-philippe@linaro.org>
L: linux-acpi@vger.kernel.org
-L: iommu@lists.linux-foundation.org
+L: iommu@lists.linux.dev
S: Maintained
F: drivers/acpi/viot.c
F: include/linux/acpi_viot.h
F: Documentation/devicetree/bindings/media/allwinner,sun4i-a10-csi.yaml
F: drivers/media/platform/sunxi/sun4i-csi/
+ALLWINNER A31 MIPI CSI-2 BRIDGE DRIVER
+M: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
+L: linux-media@vger.kernel.org
+S: Maintained
+T: git git://linuxtv.org/media_tree.git
+F: Documentation/devicetree/bindings/media/allwinner,sun6i-a31-mipi-csi2.yaml
+F: drivers/media/platform/sunxi/sun6i-mipi-csi2/
+
ALLWINNER CPUFREQ DRIVER
M: Yangtao Li <tiny.windzz@gmail.com>
L: linux-pm@vger.kernel.org
AMD IOMMU (AMD-VI)
M: Joerg Roedel <joro@8bytes.org>
R: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
-L: iommu@lists.linux-foundation.org
+L: iommu@lists.linux.dev
S: Maintained
T: git git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu.git
F: drivers/iommu/amd/
AMD XGBE DRIVER
M: Tom Lendacky <thomas.lendacky@amd.com>
+M: "Shyam Sundar S K" <Shyam-sundar.S-k@amd.com>
L: netdev@vger.kernel.org
S: Supported
F: arch/arm64/boot/dts/amd/amd-seattle-xgbe*.dtsi
M: Martijn Coenen <maco@android.com>
M: Joel Fernandes <joel@joelfernandes.org>
M: Christian Brauner <christian@brauner.io>
-M: Hridya Valsaraju <hridya@google.com>
+M: Carlos Llamas <cmllamas@google.com>
M: Suren Baghdasaryan <surenb@google.com>
L: linux-kernel@vger.kernel.org
S: Supported
F: sound/aoa/
APEX EMBEDDED SYSTEMS STX104 IIO DRIVER
-M: William Breathitt Gray <vilhelm.gray@gmail.com>
+M: William Breathitt Gray <william.gray@linaro.org>
L: linux-iio@vger.kernel.org
S: Maintained
F: drivers/iio/adc/stx104.c
W: http://www.aquantia.com
F: drivers/net/ethernet/aquantia/atlantic/aq_ptp*
+AR0521 ON SEMICONDUCTOR CAMERA SENSOR DRIVER
+M: Krzysztof Hałasa <khalasa@piap.pl>
+L: linux-media@vger.kernel.org
+S: Maintained
+F: Documentation/devicetree/bindings/media/i2c/onnn,ar0521.yaml
+F: drivers/media/i2c/ar0521.c
+
ARASAN NAND CONTROLLER DRIVER
M: Miquel Raynal <miquel.raynal@bootlin.com>
M: Naga Sureshkumar Relli <nagasure@xilinx.com>
ARM HDLCD DRM DRIVER
M: Liviu Dudau <liviu.dudau@arm.com>
S: Supported
-F: Documentation/devicetree/bindings/display/arm,hdlcd.txt
+F: Documentation/devicetree/bindings/display/arm,hdlcd.yaml
F: drivers/gpu/drm/arm/hdlcd_*
ARM INTEGRATOR, VERSATILE AND REALVIEW SUPPORT
F: Documentation/devicetree/bindings/arm/arm,vexpress-juno.yaml
F: Documentation/devicetree/bindings/auxdisplay/arm,versatile-lcd.yaml
F: Documentation/devicetree/bindings/clock/arm,syscon-icst.yaml
-F: Documentation/devicetree/bindings/i2c/i2c-versatile.txt
+F: Documentation/devicetree/bindings/i2c/arm,i2c-versatile.yaml
F: Documentation/devicetree/bindings/interrupt-controller/arm,versatile-fpga-irq.txt
F: Documentation/devicetree/bindings/mtd/mtd-physmap.yaml
F: arch/arm/boot/dts/arm-realview-*
L: Mali DP Maintainers <malidp@foss.arm.com>
S: Supported
T: git git://anongit.freedesktop.org/drm/drm-misc
-F: Documentation/devicetree/bindings/display/arm,komeda.txt
+F: Documentation/devicetree/bindings/display/arm,komeda.yaml
F: Documentation/gpu/komeda-kms.rst
F: drivers/gpu/drm/arm/display/include/
F: drivers/gpu/drm/arm/display/komeda/
L: Mali DP Maintainers <malidp@foss.arm.com>
S: Supported
T: git git://anongit.freedesktop.org/drm/drm-misc
-F: Documentation/devicetree/bindings/display/arm,malidp.txt
+F: Documentation/devicetree/bindings/display/arm,malidp.yaml
F: Documentation/gpu/afbc.rst
F: drivers/gpu/drm/arm/
S: Supported
Q: https://patchwork.ozlabs.org/project/linux-aspeed/list/
T: git git://git.kernel.org/pub/scm/linux/kernel/git/joel/aspeed.git
+F: Documentation/devicetree/bindings/arm/aspeed/
F: arch/arm/boot/dts/aspeed-*
F: arch/arm/mach-aspeed/
N: aspeed
S: Maintained
T: git git://git.kernel.org/pub/scm/linux/kernel/git/coresight/linux.git
F: Documentation/ABI/testing/sysfs-bus-coresight-devices-*
-F: Documentation/devicetree/bindings/arm/coresight-cpu-debug.txt
-F: Documentation/devicetree/bindings/arm/coresight-cti.yaml
-F: Documentation/devicetree/bindings/arm/coresight.txt
-F: Documentation/devicetree/bindings/arm/ete.yaml
-F: Documentation/devicetree/bindings/arm/trbe.yaml
+F: Documentation/devicetree/bindings/arm/arm,coresight-*.yaml
+F: Documentation/devicetree/bindings/arm/arm,embedded-trace-extension.yaml
+F: Documentation/devicetree/bindings/arm/arm,trace-buffer-extension.yaml
F: Documentation/trace/coresight/*
F: drivers/hwtracing/coresight/*
F: include/dt-bindings/arm/coresight-cti-dt.h
S: Maintained
T: git git://github.com/ulli-kroll/linux.git
F: Documentation/devicetree/bindings/arm/gemini.yaml
-F: Documentation/devicetree/bindings/net/cortina,gemini-ethernet.txt
+F: Documentation/devicetree/bindings/net/cortina,gemini-ethernet.yaml
F: Documentation/devicetree/bindings/pinctrl/cortina,gemini-pinctrl.txt
F: Documentation/devicetree/bindings/rtc/faraday,ftrtc010.yaml
F: arch/arm/boot/dts/gemini*
M: Nick Hawkins <nick.hawkins@hpe.com>
S: Maintained
F: Documentation/devicetree/bindings/arm/hpe,gxp.yaml
+F: Documentation/devicetree/bindings/spi/hpe,gxp-spi.yaml
F: Documentation/devicetree/bindings/timer/hpe,gxp-timer.yaml
F: arch/arm/boot/dts/hpe-bmc*
F: arch/arm/boot/dts/hpe-gxp*
F: arch/arm/mach-hpe/
F: drivers/clocksource/timer-gxp.c
+F: drivers/spi/spi-gxp.c
F: drivers/watchdog/gxp-wdt.c
ARM/IGEP MACHINE SUPPORT
F: Documentation/devicetree/bindings/arm/ste-*
F: Documentation/devicetree/bindings/arm/ux500.yaml
F: Documentation/devicetree/bindings/arm/ux500/
-F: Documentation/devicetree/bindings/i2c/i2c-nomadik.txt
+F: Documentation/devicetree/bindings/i2c/st,nomadik-i2c.yaml
F: arch/arm/boot/dts/ste-*
F: arch/arm/mach-nomadik/
F: arch/arm/mach-ux500/
F: Documentation/devicetree/bindings/arm/npcm/*
F: arch/arm/boot/dts/nuvoton-npcm*
F: arch/arm/mach-npcm/
+F: arch/arm64/boot/dts/nuvoton/
F: drivers/*/*npcm*
F: drivers/*/*/*npcm*
F: include/dt-bindings/clock/nuvoton,npcm7xx-clock.h
+F: include/dt-bindings/clock/nuvoton,npcm845-clk.h
ARM/NUVOTON WPCM450 ARCHITECTURE
M: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
M: Chester Lin <clin@suse.com>
R: Andreas Färber <afaerber@suse.de>
R: Matthias Brugger <mbrugger@suse.com>
+R: NXP S32 Linux Team <s32@nxp.com>
L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
S: Maintained
F: arch/arm64/boot/dts/freescale/s32g*.dts*
N: oxnas
ARM/PALM TREO SUPPORT
-M: Tomas Cech <sleep_walker@suse.com>
L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
-S: Maintained
-W: http://hackndev.com
+S: Orphan
F: arch/arm/mach-pxa/palmtreo.*
ARM/PALMTX,PALMT5,PALMLD,PALMTE2,PALMTC SUPPORT
ARM/QUALCOMM SUPPORT
M: Andy Gross <agross@kernel.org>
M: Bjorn Andersson <bjorn.andersson@linaro.org>
+R: Konrad Dybcio <konrad.dybcio@somainline.org>
L: linux-arm-msm@vger.kernel.org
S: Maintained
T: git git://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux.git
C: irc://irc.libera.chat/renesas-soc
T: git git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-devel.git next
F: Documentation/devicetree/bindings/arm/renesas.yaml
+F: Documentation/devicetree/bindings/hwinfo/renesas,prr.yaml
+F: Documentation/devicetree/bindings/soc/renesas/
F: arch/arm64/boot/dts/renesas/
F: drivers/soc/renesas/
F: include/linux/soc/renesas/
L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
L: linux-media@vger.kernel.org
S: Maintained
+F: Documentation/devicetree/bindings/media/samsung,s5pv210-jpeg.yaml
F: drivers/media/platform/samsung/s5p-jpeg/
ARM/SAMSUNG S5P SERIES Multi Format Codec (MFC) SUPPORT
C: irc://irc.libera.chat/renesas-soc
T: git git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-devel.git next
F: Documentation/devicetree/bindings/arm/renesas.yaml
+F: Documentation/devicetree/bindings/soc/renesas/
F: arch/arm/boot/dts/emev2*
F: arch/arm/boot/dts/gr-peach*
F: arch/arm/boot/dts/iwg20d-q7*
N: stm32
N: stm
+ARM/SUNPLUS SP7021 SOC SUPPORT
+M: Qin Jian <qinjian@cqplus1.com>
+L: linux-arm-kernel@lists.infradead.org (moderated for mon-subscribers)
+S: Maintained
+W: https://sunplus-tibbo.atlassian.net/wiki/spaces/doc/overview
+F: Documentation/devicetree/bindings/arm/sunplus,sp7021.yaml
+F: Documentation/devicetree/bindings/clock/sunplus,sp7021-clkc.yaml
+F: Documentation/devicetree/bindings/interrupt-controller/sunplus,sp7021-intc.yaml
+F: Documentation/devicetree/bindings/reset/sunplus,reset.yaml
+F: arch/arm/boot/dts/sunplus-sp7021*.dts*
+F: arch/arm/configs/sp7021_*defconfig
+F: arch/arm/mach-sunplus/
+F: drivers/irqchip/irq-sp7021-intc.c
+F: drivers/reset/reset-sunplus.c
+F: include/dt-bindings/clock/sunplus,sp7021-clkc.h
+F: include/dt-bindings/reset/sunplus,sp7021-reset.h
+
ARM/Synaptics SoC support
M: Jisheng Zhang <jszhang@kernel.org>
M: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
F: Documentation/devicetree/bindings/iio/accel/bosch,bma400.yaml
F: drivers/iio/accel/bma400*
-BPF (Safe dynamic programs and tools)
+BPF [GENERAL] (Safe Dynamic Programs and Tools)
M: Alexei Starovoitov <ast@kernel.org>
M: Daniel Borkmann <daniel@iogearbox.net>
M: Andrii Nakryiko <andrii@kernel.org>
-R: Martin KaFai Lau <kafai@fb.com>
-R: Song Liu <songliubraving@fb.com>
+R: Martin KaFai Lau <martin.lau@linux.dev>
+R: Song Liu <song@kernel.org>
R: Yonghong Song <yhs@fb.com>
R: John Fastabend <john.fastabend@gmail.com>
R: KP Singh <kpsingh@kernel.org>
-L: netdev@vger.kernel.org
+R: Stanislav Fomichev <sdf@google.com>
+R: Hao Luo <haoluo@google.com>
+R: Jiri Olsa <jolsa@kernel.org>
L: bpf@vger.kernel.org
S: Supported
W: https://bpf.io/
F: tools/bpf/
F: tools/lib/bpf/
F: tools/testing/selftests/bpf/
-N: bpf
-K: bpf
BPF JIT for ARM
M: Shubham Bansal <illusionist.neo@gmail.com>
-L: netdev@vger.kernel.org
L: bpf@vger.kernel.org
-S: Maintained
+S: Odd Fixes
F: arch/arm/net/
BPF JIT for ARM64
M: Daniel Borkmann <daniel@iogearbox.net>
M: Alexei Starovoitov <ast@kernel.org>
M: Zi Shen Lim <zlim.lnx@gmail.com>
-L: netdev@vger.kernel.org
L: bpf@vger.kernel.org
S: Supported
F: arch/arm64/net/
BPF JIT for MIPS (32-BIT AND 64-BIT)
M: Johan Almbladh <johan.almbladh@anyfinetworks.com>
M: Paul Burton <paulburton@kernel.org>
-L: netdev@vger.kernel.org
L: bpf@vger.kernel.org
S: Maintained
F: arch/mips/net/
BPF JIT for NFP NICs
M: Jakub Kicinski <kuba@kernel.org>
-L: netdev@vger.kernel.org
L: bpf@vger.kernel.org
-S: Supported
+S: Odd Fixes
F: drivers/net/ethernet/netronome/nfp/bpf/
BPF JIT for POWERPC (32-BIT AND 64-BIT)
M: Naveen N. Rao <naveen.n.rao@linux.ibm.com>
-L: netdev@vger.kernel.org
+M: Michael Ellerman <mpe@ellerman.id.au>
L: bpf@vger.kernel.org
-S: Maintained
+S: Supported
F: arch/powerpc/net/
BPF JIT for RISC-V (32-bit)
M: Luke Nelson <luke.r.nels@gmail.com>
M: Xi Wang <xi.wang@gmail.com>
-L: netdev@vger.kernel.org
L: bpf@vger.kernel.org
S: Maintained
F: arch/riscv/net/
BPF JIT for RISC-V (64-bit)
M: Björn Töpel <bjorn@kernel.org>
-L: netdev@vger.kernel.org
L: bpf@vger.kernel.org
S: Maintained
F: arch/riscv/net/
M: Ilya Leoshkevich <iii@linux.ibm.com>
M: Heiko Carstens <hca@linux.ibm.com>
M: Vasily Gorbik <gor@linux.ibm.com>
-L: netdev@vger.kernel.org
L: bpf@vger.kernel.org
-S: Maintained
+S: Supported
F: arch/s390/net/
X: arch/s390/net/pnet.c
BPF JIT for SPARC (32-BIT AND 64-BIT)
M: David S. Miller <davem@davemloft.net>
-L: netdev@vger.kernel.org
L: bpf@vger.kernel.org
-S: Maintained
+S: Odd Fixes
F: arch/sparc/net/
BPF JIT for X86 32-BIT
M: Wang YanQing <udknight@gmail.com>
-L: netdev@vger.kernel.org
L: bpf@vger.kernel.org
-S: Maintained
+S: Odd Fixes
F: arch/x86/net/bpf_jit_comp32.c
BPF JIT for X86 64-BIT
M: Alexei Starovoitov <ast@kernel.org>
M: Daniel Borkmann <daniel@iogearbox.net>
-L: netdev@vger.kernel.org
L: bpf@vger.kernel.org
S: Supported
F: arch/x86/net/
X: arch/x86/net/bpf_jit_comp32.c
-BPF LSM (Security Audit and Enforcement using BPF)
+BPF [CORE]
+M: Alexei Starovoitov <ast@kernel.org>
+M: Daniel Borkmann <daniel@iogearbox.net>
+R: John Fastabend <john.fastabend@gmail.com>
+L: bpf@vger.kernel.org
+S: Maintained
+F: kernel/bpf/verifier.c
+F: kernel/bpf/tnum.c
+F: kernel/bpf/core.c
+F: kernel/bpf/syscall.c
+F: kernel/bpf/dispatcher.c
+F: kernel/bpf/trampoline.c
+F: include/linux/bpf*
+F: include/linux/filter.h
+
+BPF [BTF]
+M: Martin KaFai Lau <martin.lau@linux.dev>
+L: bpf@vger.kernel.org
+S: Maintained
+F: kernel/bpf/btf.c
+F: include/linux/btf*
+
+BPF [TRACING]
+M: Song Liu <song@kernel.org>
+R: Jiri Olsa <jolsa@kernel.org>
+L: bpf@vger.kernel.org
+S: Maintained
+F: kernel/trace/bpf_trace.c
+F: kernel/bpf/stackmap.c
+
+BPF [NETWORKING] (tc BPF, sock_addr)
+M: Martin KaFai Lau <martin.lau@linux.dev>
+M: Daniel Borkmann <daniel@iogearbox.net>
+R: John Fastabend <john.fastabend@gmail.com>
+L: bpf@vger.kernel.org
+L: netdev@vger.kernel.org
+S: Maintained
+F: net/core/filter.c
+F: net/sched/act_bpf.c
+F: net/sched/cls_bpf.c
+
+BPF [NETWORKING] (struct_ops, reuseport)
+M: Martin KaFai Lau <martin.lau@linux.dev>
+L: bpf@vger.kernel.org
+L: netdev@vger.kernel.org
+S: Maintained
+F: kernel/bpf/bpf_struct*
+
+BPF [SECURITY & LSM] (Security Audit and Enforcement using BPF)
M: KP Singh <kpsingh@kernel.org>
R: Florent Revest <revest@chromium.org>
R: Brendan Jackman <jackmanb@chromium.org>
F: kernel/bpf/bpf_lsm.c
F: security/bpf/
+BPF [STORAGE & CGROUPS]
+M: Martin KaFai Lau <martin.lau@linux.dev>
+L: bpf@vger.kernel.org
+S: Maintained
+F: kernel/bpf/cgroup.c
+F: kernel/bpf/*storage.c
+F: kernel/bpf/bpf_lru*
+
+BPF [RINGBUF]
+M: Andrii Nakryiko <andrii@kernel.org>
+L: bpf@vger.kernel.org
+S: Maintained
+F: kernel/bpf/ringbuf.c
+
+BPF [ITERATOR]
+M: Yonghong Song <yhs@fb.com>
+L: bpf@vger.kernel.org
+S: Maintained
+F: kernel/bpf/*iter.c
+
+BPF [L7 FRAMEWORK] (sockmap)
+M: John Fastabend <john.fastabend@gmail.com>
+M: Jakub Sitnicki <jakub@cloudflare.com>
+L: netdev@vger.kernel.org
+L: bpf@vger.kernel.org
+S: Maintained
+F: include/linux/skmsg.h
+F: net/core/skmsg.c
+F: net/core/sock_map.c
+F: net/ipv4/tcp_bpf.c
+F: net/ipv4/udp_bpf.c
+F: net/unix/unix_bpf.c
+
+BPF [LIBRARY] (libbpf)
+M: Andrii Nakryiko <andrii@kernel.org>
+L: bpf@vger.kernel.org
+S: Maintained
+F: tools/lib/bpf/
+
+BPF [TOOLING] (bpftool)
+M: Quentin Monnet <quentin@isovalent.com>
+L: bpf@vger.kernel.org
+S: Maintained
+F: kernel/bpf/disasm.*
+F: tools/bpf/bpftool/
+
+BPF [SELFTESTS] (Test Runners & Infrastructure)
+M: Andrii Nakryiko <andrii@kernel.org>
+R: Mykola Lysenko <mykolal@fb.com>
+L: bpf@vger.kernel.org
+S: Maintained
+F: tools/testing/selftests/bpf/
+
+BPF [MISC]
+L: bpf@vger.kernel.org
+S: Odd Fixes
+K: (?:\b|_)bpf(?:\b|_)
+
BROADCOM B44 10/100 ETHERNET DRIVER
M: Michael Chan <michael.chan@broadcom.com>
L: netdev@vger.kernel.org
M: William Zhang <william.zhang@broadcom.com>
M: Anand Gore <anand.gore@broadcom.com>
M: Kursad Oney <kursad.oney@broadcom.com>
+M: Florian Fainelli <f.fainelli@gmail.com>
R: Broadcom internal kernel review list <bcm-kernel-feedback-list@broadcom.com>
L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
S: Maintained
T: git git://github.com/broadcom/stblinux.git
F: Documentation/devicetree/bindings/arm/bcm/brcm,bcmbca.yaml
-F: arch/arm/boot/dts/bcm47622.dtsi
-F: arch/arm/boot/dts/bcm947622.dts
+F: arch/arm64/boot/dts/broadcom/bcmbca/*
N: bcmbca
N: bcm[9]?47622
+N: bcm[9]?4912
+N: bcm[9]?63138
+N: bcm[9]?63146
+N: bcm[9]?63148
+N: bcm[9]?63158
+N: bcm[9]?63178
+N: bcm[9]?6756
+N: bcm[9]?6813
+N: bcm[9]?6846
+N: bcm[9]?6855
+N: bcm[9]?6856
+N: bcm[9]?6858
+N: bcm[9]?6878
BROADCOM BCM2711/BCM2835 ARM ARCHITECTURE
-M: Nicolas Saenz Julienne <nsaenz@kernel.org>
+M: Florian Fainelli <f.fainelli@gmail.com>
R: Broadcom internal kernel review list <bcm-kernel-feedback-list@broadcom.com>
L: linux-rpi-kernel@lists.infradead.org (moderated for non-subscribers)
L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
S: Maintained
-T: git git://git.kernel.org/pub/scm/linux/kernel/git/nsaenz/linux-rpi.git
+T: git git://github.com/broadcom/stblinux.git
F: Documentation/devicetree/bindings/pci/brcm,stb-pcie.yaml
F: drivers/pci/controller/pcie-brcmstb.c
F: drivers/staging/vc04_services
F: arch/arm/boot/dts/bcm47189*
F: arch/arm/boot/dts/bcm53573*
-BROADCOM BCM63XX ARM ARCHITECTURE
-M: Florian Fainelli <f.fainelli@gmail.com>
-R: Broadcom internal kernel review list <bcm-kernel-feedback-list@broadcom.com>
-L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
-S: Maintained
-T: git git://github.com/broadcom/stblinux.git
-N: bcm63xx
-
BROADCOM BCM63XX/BCM33XX UDC DRIVER
M: Kevin Cernekee <cernekee@gmail.com>
L: linux-usb@vger.kernel.org
L: linux-samsung-soc@vger.kernel.org
S: Maintained
T: git git://git.kernel.org/pub/scm/linux/kernel/git/chanwoo/linux.git
-F: Documentation/devicetree/bindings/devfreq/exynos-bus.txt
+F: Documentation/devicetree/bindings/interconnect/samsung,exynos-bus.yaml
F: drivers/devfreq/exynos-bus.c
BUSLOGIC SCSI DRIVER
L: llvm@lists.linux.dev
S: Supported
B: https://github.com/ClangBuiltLinux/linux/issues
-T: git git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git for-next/clang/features
+T: git git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git for-next/hardening
F: include/linux/cfi.h
F: kernel/cfi.c
T: git git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux.git
F: Documentation/devicetree/bindings/clock/
F: drivers/clk/
+F: include/dt-bindings/clock/
F: include/linux/clk-pr*
F: include/linux/clk/
F: include/linux/of_clk.h
M: Alison Schofield <alison.schofield@intel.com>
M: Vishal Verma <vishal.l.verma@intel.com>
M: Ira Weiny <ira.weiny@intel.com>
-M: Ben Widawsky <ben.widawsky@intel.com>
+M: Ben Widawsky <bwidawsk@kernel.org>
M: Dan Williams <dan.j.williams@intel.com>
L: linux-cxl@vger.kernel.org
S: Maintained
CONTEXT TRACKING
M: Frederic Weisbecker <frederic@kernel.org>
+M: "Paul E. McKenney" <paulmck@kernel.org>
S: Maintained
F: kernel/context_tracking.c
F: include/linux/context_tracking*
F: drivers/hwmon/corsair-psu.c
COUNTER SUBSYSTEM
-M: William Breathitt Gray <vilhelm.gray@gmail.com>
+M: William Breathitt Gray <william.gray@linaro.org>
L: linux-iio@vger.kernel.org
S: Maintained
-T: git git@gitlab.com:vilhelmgray/counter.git
+T: git https://git.linaro.org/people/william.gray/counter.git
F: Documentation/ABI/testing/sysfs-bus-counter
F: Documentation/driver-api/generic-counter.rst
F: drivers/counter/
S: Maintained
T: git git://git.kernel.org/pub/scm/linux/kernel/git/chanwoo/linux.git
F: Documentation/devicetree/bindings/devfreq/
+F: Documentation/devicetree/bindings/interconnect/mediatek,cci.yaml
F: drivers/devfreq/
F: include/linux/devfreq.h
F: include/trace/events/devfreq.h
F: sound/soc/codecs/da[79]*.[ch]
DIAMOND SYSTEMS GPIO-MM GPIO DRIVER
-M: William Breathitt Gray <vilhelm.gray@gmail.com>
+M: William Breathitt Gray <william.gray@linaro.org>
L: linux-gpio@vger.kernel.org
S: Maintained
F: drivers/gpio/gpio-gpio-mm.c
M: Christoph Hellwig <hch@lst.de>
M: Marek Szyprowski <m.szyprowski@samsung.com>
R: Robin Murphy <robin.murphy@arm.com>
-L: iommu@lists.linux-foundation.org
+L: iommu@lists.linux.dev
S: Supported
W: http://git.infradead.org/users/hch/dma-mapping.git
T: git git://git.infradead.org/users/hch/dma-mapping.git
DMA MAPPING BENCHMARK
M: Xiang Chen <chenxiang66@hisilicon.com>
-L: iommu@lists.linux-foundation.org
+L: iommu@lists.linux.dev
F: kernel/dma/map_benchmark.c
F: tools/testing/selftests/dma/
L: linux-media@vger.kernel.org
S: Maintained
T: git git://linuxtv.org/media_tree.git
-F: Documentation/devicetree/bindings/media/i2c/dongwoon,dw9807-vcm.txt
+F: Documentation/devicetree/bindings/media/i2c/dongwoon,dw9807-vcm.yaml
F: drivers/media/i2c/dw9807-vcm.c
DOUBLETALK DRIVER
F: Documentation/devicetree/bindings/display/bridge/chipone,icn6211.yaml
F: drivers/gpu/drm/bridge/chipone-icn6211.c
+DRM DRIVER FOR EBBG FT8719 PANEL
+M: Joel Selvaraj <jo@jsfamily.in>
+S: Maintained
+T: git git://anongit.freedesktop.org/drm/drm-misc
+F: Documentation/devicetree/bindings/display/panel/ebbg,ft8719.yaml
+F: drivers/gpu/drm/panel/panel-ebbg-ft8719.c
+
DRM DRIVER FOR FARADAY TVE200 TV ENCODER
M: Linus Walleij <linus.walleij@linaro.org>
S: Maintained
F: drivers/gpu/drm/i810/
F: include/uapi/drm/i810_drm.h
+DRM DRIVER FOR LOGICVC DISPLAY CONTROLLER
+M: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
+S: Supported
+T: git git://anongit.freedesktop.org/drm/drm-misc
+F: drivers/gpu/drm/logicvc/
+
DRM DRIVER FOR LVDS PANELS
M: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
L: dri-devel@lists.freedesktop.org
F: drivers/gpu/drm/savage/
F: include/uapi/drm/savage_drm.h
-DRM DRIVER FOR SIMPLE FRAMEBUFFERS
+DRM DRIVER FOR FIRMWARE FRAMEBUFFERS
M: Thomas Zimmermann <tzimmermann@suse.de>
+M: Javier Martinez Canillas <javierm@redhat.com>
L: dri-devel@lists.freedesktop.org
S: Maintained
T: git git://anongit.freedesktop.org/drm/drm-misc
+F: drivers/gpu/drm/drm_aperture.c
F: drivers/gpu/drm/tiny/simpledrm.c
+F: drivers/video/aperture.c
+F: include/drm/drm_aperture.h
+F: include/linux/aperture.h
DRM DRIVER FOR SIS VIDEO CARDS
S: Orphan / Obsolete
S: Orphan / Obsolete
F: drivers/gpu/drm/tdfx/
+DRM DRIVER FOR TI DLPC3433 MIPI DSI TO DMD BRIDGE
+M: Jagan Teki <jagan@amarulasolutions.com>
+S: Maintained
+F: Documentation/devicetree/bindings/display/bridge/ti,dlpc3433.yaml
+F: drivers/gpu/drm/bridge/ti-dlpc3433.c
+
DRM DRIVER FOR TI SN65DSI86 BRIDGE CHIP
R: Douglas Anderson <dianders@chromium.org>
F: Documentation/devicetree/bindings/display/bridge/ti,sn65dsi86.yaml
DRM DRIVERS FOR EXYNOS
M: Inki Dae <inki.dae@samsung.com>
-M: Joonyoung Shim <jy0922.shim@samsung.com>
M: Seung-Woo Kim <sw0312.kim@samsung.com>
M: Kyungmin Park <kyungmin.park@samsung.com>
L: dri-devel@lists.freedesktop.org
F: drivers/gpu/drm/imx/
F: drivers/gpu/ipu-v3/
+DRM DRIVERS FOR FREESCALE IMX BRIDGE
+M: Liu Ying <victor.liu@nxp.com>
+L: dri-devel@lists.freedesktop.org
+S: Maintained
+F: Documentation/devicetree/bindings/display/bridge/fsl,imx8qxp-ldb.yaml
+F: Documentation/devicetree/bindings/display/bridge/fsl,imx8qxp-pixel-combiner.yaml
+F: Documentation/devicetree/bindings/display/bridge/fsl,imx8qxp-pixel-link.yaml
+F: Documentation/devicetree/bindings/display/bridge/fsl,imx8qxp-pxl2dpi.yaml
+F: drivers/gpu/drm/bridge/imx/
+
DRM DRIVERS FOR GMA500 (Poulsbo, Moorestown and derivative chipsets)
M: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
L: dri-devel@lists.freedesktop.org
S: Supported
F: Documentation/devicetree/bindings/display/mediatek/
F: drivers/gpu/drm/mediatek/
+F: drivers/phy/mediatek/phy-mtk-dp.c
F: drivers/phy/mediatek/phy-mtk-hdmi*
F: drivers/phy/mediatek/phy-mtk-mipi*
L: linux-tegra@vger.kernel.org
S: Supported
T: git git://anongit.freedesktop.org/tegra/linux.git
-F: Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-host1x.txt
+F: Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-host1x.yaml
F: Documentation/devicetree/bindings/gpu/host1x/
F: drivers/gpu/drm/tegra/
F: drivers/gpu/host1x/
DRM DRIVERS FOR V3D
M: Emma Anholt <emma@anholt.net>
+M: Melissa Wen <mwen@igalia.com>
S: Supported
T: git git://anongit.freedesktop.org/drm/drm-misc
F: Documentation/devicetree/bindings/gpu/brcm,bcm-v3d.yaml
S: Maintained
F: drivers/net/ethernet/ibm/ehea/
+ELM327 CAN NETWORK DRIVER
+M: Max Staudt <max@enpas.org>
+L: linux-can@vger.kernel.org
+S: Maintained
+F: Documentation/networking/device_drivers/can/can327.rst
+F: drivers/net/can/can327.c
+
EM28XX VIDEO4LINUX DRIVER
M: Mauro Carvalho Chehab <mchehab@kernel.org>
L: linux-media@vger.kernel.org
F: drivers/media/usb/em28xx/
EMBEDDED LINUX
- M: Matt Mackall <mpm@selenic.com>
+ M: Olivia Mackall <olivia@selenic.com>
M: David Woodhouse <dwmw2@infradead.org>
L: linux-embedded@vger.kernel.org
S: Maintained
EROFS FILE SYSTEM
M: Gao Xiang <xiang@kernel.org>
M: Chao Yu <chao@kernel.org>
+R: Yue Hu <huyue2@coolpad.com>
+R: Jeffle Xu <jefflexu@linux.alibaba.com>
L: linux-erofs@lists.ozlabs.org
S: Maintained
T: git git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs.git
F: include/linux/errseq.h
F: lib/errseq.c
+ESD CAN/USB DRIVERS
+M: Frank Jungclaus <frank.jungclaus@esd.eu>
+R: socketcan@esd.eu
+L: linux-can@vger.kernel.org
+S: Maintained
+F: drivers/net/can/usb/esd_usb.c
+
ET131X NETWORK DRIVER
M: Mark Einon <mark.einon@gmail.com>
S: Odd Fixes
EXYNOS SYSMMU (IOMMU) driver
M: Marek Szyprowski <m.szyprowski@samsung.com>
-L: iommu@lists.linux-foundation.org
+L: iommu@lists.linux.dev
S: Maintained
F: drivers/iommu/exynos-iommu.c
FILE LOCKING (flock() and fcntl()/lockf())
M: Jeff Layton <jlayton@kernel.org>
+M: Chuck Lever <chuck.lever@oracle.com>
L: linux-fsdevel@vger.kernel.org
S: Maintained
F: fs/fcntl.c
F: include/linux/fs_types.h
F: include/uapi/linux/fs.h
F: include/uapi/linux/openat2.h
-X: fs/io-wq.c
-X: fs/io-wq.h
-X: fs/io_uring.c
FINTEK F75375S HARDWARE MONITOR AND FAN CONTROLLER DRIVER
M: Riku Voipio <riku.voipio@iki.fi>
M: Kees Cook <keescook@chromium.org>
L: linux-hardening@vger.kernel.org
S: Supported
+T: git git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git for-next/hardening
F: include/linux/fortify-string.h
F: lib/test_fortify/*
F: scripts/test_fortify.sh
F: drivers/fpga/
F: include/linux/fpga/
+INTEL MAX10 BMC SECURE UPDATES
+M: Russ Weight <russell.h.weight@intel.com>
+L: linux-fpga@vger.kernel.org
+S: Maintained
+F: Documentation/ABI/testing/sysfs-driver-intel-m10-bmc-sec-update
+F: drivers/fpga/intel-m10-bmc-sec-update.c
+
+MICROCHIP POLARFIRE FPGA DRIVERS
+M: Conor Dooley <conor.dooley@microchip.com>
+R: Ivan Bornyakov <i.bornyakov@metrotek.ru>
+L: linux-fpga@vger.kernel.org
+S: Supported
+F: Documentation/devicetree/bindings/fpga/microchip,mpf-spi-fpga-mgr.yaml
+F: drivers/fpga/microchip-spi.c
+
FPU EMULATOR
M: Bill Metzenthen <billm@melbpc.org.au>
S: Maintained
M: Kees Cook <keescook@chromium.org>
L: linux-hardening@vger.kernel.org
S: Maintained
+T: git git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git for-next/hardening
F: Documentation/kbuild/gcc-plugins.rst
F: scripts/Makefile.gcc-plugins
F: scripts/gcc-plugins/
T: git git://git.kernel.org/pub/scm/linux/kernel/git/phy/linux-phy.git
F: Documentation/devicetree/bindings/phy/
F: drivers/phy/
+F: include/dt-bindings/phy/
F: include/linux/phy/
GENERIC PINCTRL I2C DEMULTIPLEXER DRIVER
F: Documentation/driver-api/gpio/
F: drivers/gpio/
F: include/asm-generic/gpio.h
+F: include/dt-bindings/gpio/
F: include/linux/gpio.h
F: include/linux/gpio/
F: include/linux/of_gpio.h
L: linux-rockchip@lists.infradead.org
S: Maintained
F: Documentation/devicetree/bindings/media/nxp,imx8mq-vpu.yaml
+F: Documentation/devicetree/bindings/media/rockchip,rk3568-vepu.yaml
F: Documentation/devicetree/bindings/media/rockchip-vpu.yaml
F: drivers/staging/media/hantro/
K: (devm_)?hwmon_device_(un)?register(|_with_groups|_with_info)
HARDWARE RANDOM NUMBER GENERATOR CORE
- M: Matt Mackall <mpm@selenic.com>
+ M: Olivia Mackall <olivia@selenic.com>
M: Herbert Xu <herbert@gondor.apana.org.au>
L: linux-crypto@vger.kernel.org
S: Odd fixes
F: Documentation/admin-guide/perf/hisi-pmu.rst
F: drivers/perf/hisilicon
-HISILICON QM AND ZIP Controller DRIVER
+HISILICON HNS3 PMU DRIVER
+M: Guangbin Huang <huangguangbin2@huawei.com>
+S: Supported
+F: Documentation/admin-guide/perf/hns3-pmu.rst
+F: drivers/perf/hisilicon/hns3_pmu.c
+
+HISILICON QM DRIVER
+M: Weili Qian <qianweili@huawei.com>
M: Zhou Wang <wangzhou1@hisilicon.com>
L: linux-crypto@vger.kernel.org
S: Maintained
-F: Documentation/ABI/testing/debugfs-hisi-zip
+F: drivers/crypto/hisilicon/Kconfig
+F: drivers/crypto/hisilicon/Makefile
F: drivers/crypto/hisilicon/qm.c
F: drivers/crypto/hisilicon/sgl.c
-F: drivers/crypto/hisilicon/zip/
F: include/linux/hisi_acc_qm.h
+HISILICON ZIP Controller DRIVER
+M: Yang Shen <shenyang39@huawei.com>
+M: Zhou Wang <wangzhou1@hisilicon.com>
+L: linux-crypto@vger.kernel.org
+S: Maintained
+F: Documentation/ABI/testing/debugfs-hisi-zip
+F: drivers/crypto/hisilicon/zip/
+
HISILICON ROCE DRIVER
M: Wenpeng Liang <liangwenpeng@huawei.com>
M: Weihang Li <liweihang@huawei.com>
M: Dipen Patel <dipenp@nvidia.com>
S: Maintained
F: Documentation/devicetree/bindings/timestamp/
-F: Documentation/hte/
+F: Documentation/driver-api/hte/
F: drivers/hte/
F: include/linux/hte.h
HWPOISON MEMORY FAILURE HANDLING
M: Naoya Horiguchi <naoya.horiguchi@nec.com>
+R: Miaohe Lin <linmiaohe@huawei.com>
L: linux-mm@kvack.org
S: Maintained
F: mm/hwpoison-inject.c
T: git git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux.git
F: Documentation/ABI/stable/sysfs-bus-vmbus
F: Documentation/ABI/testing/debugfs-hyperv
+F: Documentation/virt/hyperv
F: Documentation/networking/device_drivers/ethernet/microsoft/netvsc.rst
F: arch/arm64/hyperv
F: arch/arm64/include/asm/hyperv-tlfs.h
F: Documentation/devicetree/bindings/i2c/i2c.txt
F: Documentation/i2c/
F: drivers/i2c/*
+F: include/dt-bindings/i2c/i2c.h
F: include/linux/i2c-dev.h
F: include/linux/i2c-smbus.h
F: include/linux/i2c.h
F: Documentation/devicetree/bindings/i2c/
F: drivers/i2c/algos/
F: drivers/i2c/busses/
+F: include/dt-bindings/i2c/
I2C-TAOS-EVM DRIVER
M: Jean Delvare <jdelvare@suse.com>
IDMAPPED MOUNTS
M: Christian Brauner <brauner@kernel.org>
+M: Seth Forshee <sforshee@kernel.org>
L: linux-fsdevel@vger.kernel.org
S: Maintained
T: git git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux.git
F: Documentation/devicetree/bindings/iio/
F: drivers/iio/
F: drivers/staging/iio/
+F: include/dt-bindings/iio/
F: include/linux/iio/
F: tools/iio/
M: Cezary Rojewski <cezary.rojewski@intel.com>
M: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
M: Liam Girdwood <liam.r.girdwood@linux.intel.com>
-M: Jie Yang <yang.jie@linux.intel.com>
+M: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
+M: Bard Liao <yung-chuan.liao@linux.intel.com>
+M: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
+M: Kai Vehmanen <kai.vehmanen@linux.intel.com>
L: alsa-devel@alsa-project.org (moderated for non-subscribers)
S: Supported
F: sound/soc/intel/
INTEL IOMMU (VT-d)
M: David Woodhouse <dwmw2@infradead.org>
M: Lu Baolu <baolu.lu@linux.intel.com>
-L: iommu@lists.linux-foundation.org
+L: iommu@lists.linux.dev
S: Supported
T: git git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu.git
F: drivers/iommu/intel/
IOMMU DRIVERS
M: Joerg Roedel <joro@8bytes.org>
M: Will Deacon <will@kernel.org>
-L: iommu@lists.linux-foundation.org
+L: iommu@lists.linux.dev
S: Maintained
T: git git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu.git
F: Documentation/devicetree/bindings/iommu/
S: Maintained
T: git git://git.kernel.dk/linux-block
T: git git://git.kernel.dk/liburing
-F: fs/io-wq.c
-F: fs/io-wq.h
-F: fs/io_uring.c
+F: io_uring/
F: include/linux/io_uring.h
F: include/uapi/linux/io_uring.h
F: tools/io_uring/
F: drivers/irqchip/
ISA
-M: William Breathitt Gray <vilhelm.gray@gmail.com>
+M: William Breathitt Gray <william.gray@linaro.org>
S: Maintained
F: Documentation/driver-api/isa.rst
F: drivers/base/isa.c
F: scripts/mod/
F: scripts/package/
+KERNEL HARDENING (not covered by other areas)
+M: Kees Cook <keescook@chromium.org>
+L: linux-hardening@vger.kernel.org
+S: Supported
+T: git git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git for-next/hardening
+F: include/linux/overflow.h
+F: include/linux/randomize_kstack.h
+F: mm/usercopy.c
+K: \b(add|choose)_random_kstack_offset\b
+K: \b__check_(object_size|heap_object)\b
+
KERNEL JANITORS
L: kernel-janitors@vger.kernel.org
S: Odd Fixes
KERNEL NFSD, SUNRPC, AND LOCKD SERVERS
M: Chuck Lever <chuck.lever@oracle.com>
+M: Jeff Layton <jlayton@kernel.org>
L: linux-nfs@vger.kernel.org
S: Supported
W: http://nfs.sourceforge.net/
R: James Morse <james.morse@arm.com>
R: Alexandru Elisei <alexandru.elisei@arm.com>
R: Suzuki K Poulose <suzuki.poulose@arm.com>
+R: Oliver Upton <oliver.upton@linux.dev>
L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
L: kvmarm@lists.cs.columbia.edu (moderated for non-subscribers)
S: Maintained
F: arch/riscv/include/uapi/asm/kvm*
F: arch/riscv/kvm/
F: tools/testing/selftests/kvm/*/riscv/
-F: tools/testing/selftests/kvm/riscv/
KERNEL VIRTUAL MACHINE for s390 (KVM/s390)
M: Christian Borntraeger <borntraeger@linux.ibm.com>
F: tools/testing/selftests/kvm/s390x/
KERNEL VIRTUAL MACHINE FOR X86 (KVM/x86)
+M: Sean Christopherson <seanjc@google.com>
M: Paolo Bonzini <pbonzini@redhat.com>
-R: Sean Christopherson <seanjc@google.com>
-R: Vitaly Kuznetsov <vkuznets@redhat.com>
-R: Wanpeng Li <wanpengli@tencent.com>
-R: Jim Mattson <jmattson@google.com>
-R: Joerg Roedel <joro@8bytes.org>
L: kvm@vger.kernel.org
S: Supported
-W: http://www.linux-kvm.org
T: git git://git.kernel.org/pub/scm/virt/kvm/kvm.git
F: arch/x86/include/asm/kvm*
-F: arch/x86/include/asm/pvclock-abi.h
F: arch/x86/include/asm/svm.h
F: arch/x86/include/asm/vmx*.h
F: arch/x86/include/uapi/asm/kvm*
F: arch/x86/include/uapi/asm/svm.h
F: arch/x86/include/uapi/asm/vmx.h
-F: arch/x86/kernel/kvm.c
-F: arch/x86/kernel/kvmclock.c
F: arch/x86/kvm/
F: arch/x86/kvm/*/
+KVM PARAVIRT (KVM/paravirt)
+M: Paolo Bonzini <pbonzini@redhat.com>
+R: Wanpeng Li <wanpengli@tencent.com>
+R: Vitaly Kuznetsov <vkuznets@redhat.com>
+L: kvm@vger.kernel.org
+S: Supported
+T: git git://git.kernel.org/pub/scm/virt/kvm/kvm.git
+F: arch/x86/kernel/kvm.c
+F: arch/x86/kernel/kvmclock.c
+F: arch/x86/include/asm/pvclock-abi.h
+F: include/linux/kvm_para.h
+F: include/uapi/linux/kvm_para.h
+F: include/uapi/asm-generic/kvm_para.h
+F: include/asm-generic/kvm_para.h
+F: arch/um/include/asm/kvm_para.h
+F: arch/x86/include/asm/kvm_para.h
+F: arch/x86/include/uapi/asm/kvm_para.h
+
+KVM X86 HYPER-V (KVM/hyper-v)
+M: Vitaly Kuznetsov <vkuznets@redhat.com>
+M: Sean Christopherson <seanjc@google.com>
+M: Paolo Bonzini <pbonzini@redhat.com>
+L: kvm@vger.kernel.org
+S: Supported
+T: git git://git.kernel.org/pub/scm/virt/kvm/kvm.git
+F: arch/x86/kvm/hyperv.*
+F: arch/x86/kvm/kvm_onhyperv.*
+F: arch/x86/kvm/svm/hyperv.*
+F: arch/x86/kvm/svm/svm_onhyperv.*
+F: arch/x86/kvm/vmx/evmcs.*
+
KERNFS
M: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
M: Tejun Heo <tj@kernel.org>
F: include/net/l3mdev.h
F: net/l3mdev
-L7 BPF FRAMEWORK
-M: John Fastabend <john.fastabend@gmail.com>
-M: Daniel Borkmann <daniel@iogearbox.net>
-M: Jakub Sitnicki <jakub@cloudflare.com>
-L: netdev@vger.kernel.org
-L: bpf@vger.kernel.org
-S: Maintained
-F: include/linux/skmsg.h
-F: net/core/skmsg.c
-F: net/core/sock_map.c
-F: net/ipv4/tcp_bpf.c
-F: net/ipv4/udp_bpf.c
-F: net/unix/unix_bpf.c
-
LANDLOCK SECURITY MODULE
M: Mickaël Salaün <mic@digikod.net>
L: linux-security-module@vger.kernel.org
L: linux-ide@vger.kernel.org
S: Maintained
T: git git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/libata.git
+F: Documentation/ABI/testing/sysfs-ata
F: Documentation/devicetree/bindings/ata/
F: drivers/ata/
F: include/linux/ata.h
LOADPIN SECURITY MODULE
M: Kees Cook <keescook@chromium.org>
S: Supported
-T: git git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git lsm/loadpin
+T: git git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git for-next/hardening
F: Documentation/admin-guide/LSM/LoadPin.rst
F: security/loadpin/
LOONGARCH
M: Huacai Chen <chenhuacai@kernel.org>
R: WANG Xuerui <kernel@xen0n.name>
+L: loongarch@lists.linux.dev
S: Maintained
T: git git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson.git
F: arch/loongarch/
F: drivers/net/ieee802154/mcr20a.h
MEASUREMENT COMPUTING CIO-DAC IIO DRIVER
-M: William Breathitt Gray <vilhelm.gray@gmail.com>
+M: William Breathitt Gray <william.gray@linaro.org>
L: linux-iio@vger.kernel.org
S: Maintained
F: drivers/iio/dac/cio-dac.c
F: Documentation/userspace-api/media/
F: drivers/media/
F: drivers/staging/media/
+F: include/dt-bindings/media/
F: include/linux/platform_data/media/
F: include/media/
F: include/uapi/linux/dvb/
MEDIATEK IOMMU DRIVER
M: Yong Wu <yong.wu@mediatek.com>
-L: iommu@lists.linux-foundation.org
+L: iommu@lists.linux.dev
L: linux-mediatek@lists.infradead.org (moderated for non-subscribers)
S: Supported
F: Documentation/devicetree/bindings/iommu/mediatek*
MEDIATEK MEDIA DRIVER
M: Tiffany Lin <tiffany.lin@mediatek.com>
M: Andrew-CT Chen <andrew-ct.chen@mediatek.com>
+M: Yunfei Dong <yunfei.dong@mediatek.com>
S: Supported
F: Documentation/devicetree/bindings/media/mediatek,vcodec*.yaml
F: Documentation/devicetree/bindings/media/mediatek-vpu.txt
S: Supported
W: http://www.mellanox.com
Q: https://patchwork.kernel.org/project/netdevbpf/list/
-F: drivers/net/ethernet/mellanox/mlx5/core/accel/*
F: drivers/net/ethernet/mellanox/mlx5/core/en_accel/*
F: drivers/net/ethernet/mellanox/mlx5/core/fpga/*
F: include/linux/mlx5/mlx5_ifc_fpga.h
L: linux-mm@kvack.org
S: Maintained
W: http://www.linux-mm.org
-T: quilt https://ozlabs.org/~akpm/mmotm/
-T: quilt https://ozlabs.org/~akpm/mmots/
-T: git git://github.com/hnaz/linux-mm.git
+T: git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
+T: quilt git://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new
F: include/linux/gfp.h
F: include/linux/memory_hotplug.h
F: include/linux/mm.h
F: mm/
F: tools/testing/selftests/vm/
+MEMORY HOT(UN)PLUG
+M: David Hildenbrand <david@redhat.com>
+M: Oscar Salvador <osalvador@suse.de>
+L: linux-mm@kvack.org
+S: Maintained
+F: Documentation/admin-guide/mm/memory-hotplug.rst
+F: Documentation/core-api/memory-hotplug.rst
+F: drivers/base/memory.c
+F: include/linux/memory_hotplug.h
+F: mm/memory_hotplug.c
+F: tools/testing/selftests/memory-hotplug/
+
MEMORY TECHNOLOGY DEVICES (MTD)
M: Miquel Raynal <miquel.raynal@bootlin.com>
M: Richard Weinberger <richard@nod.at>
L: netdev@vger.kernel.org
S: Maintained
F: Documentation/devicetree/bindings/net/dsa/microchip,ksz.yaml
+F: Documentation/devicetree/bindings/net/dsa/microchip,lan937x.yaml
F: drivers/net/dsa/microchip/*
F: include/linux/platform_data/microchip-ksz.h
F: net/dsa/tag_ksz.c
F: Documentation/devicetree/bindings/mtd/atmel-nand.txt
F: drivers/mtd/nand/raw/atmel/*
+MICROCHIP OTPC DRIVER
+M: Claudiu Beznea <claudiu.beznea@microchip.com>
+L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
+S: Supported
+F: Documentation/devicetree/bindings/nvmem/microchip,sama7g5-otpc.yaml
+F: drivers/nvmem/microchip-otpc.c
+F: include/dt-bindings/nvmem/microchip,sama7g5-otpc.h
+
MICROCHIP PWM DRIVER
M: Claudiu Beznea <claudiu.beznea@microchip.com>
L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
S: Maintained
F: net/sched/sch_netem.c
-NETERION 10GbE DRIVERS (s2io/vxge)
+NETERION 10GbE DRIVERS (s2io)
M: Jon Mason <jdmason@kudzu.us>
L: netdev@vger.kernel.org
S: Supported
F: Documentation/networking/device_drivers/ethernet/neterion/s2io.rst
-F: Documentation/networking/device_drivers/ethernet/neterion/vxge.rst
F: drivers/net/ethernet/neterion/
NETFILTER
F: Documentation/devicetree/bindings/net/
F: drivers/connector/
F: drivers/net/
+F: include/dt-bindings/net/
F: include/linux/etherdevice.h
F: include/linux/fcdevice.h
F: include/linux/fddidevice.h
NETWORKING [TLS]
M: Boris Pismenny <borisp@nvidia.com>
M: John Fastabend <john.fastabend@gmail.com>
-M: Daniel Borkmann <daniel@iogearbox.net>
M: Jakub Kicinski <kuba@kernel.org>
L: netdev@vger.kernel.org
S: Maintained
F: drivers/net/phy/nxp-c45-tja11xx.c
NXP FSPI DRIVER
-M: Ashish Kumar <ashish.kumar@nxp.com>
+M: Han Xu <han.xu@nxp.com>
+M: Haibo Chen <haibo.chen@nxp.com>
R: Yogesh Gaur <yogeshgaur.83@gmail.com>
L: linux-spi@vger.kernel.org
S: Maintained
F: drivers/iio/gyro/fxas21002c_spi.c
NXP i.MX CLOCK DRIVERS
-M: Abel Vesa <abel.vesa@nxp.com>
+M: Abel Vesa <abelvesa@kernel.org>
L: linux-clk@vger.kernel.org
L: linux-imx@nxp.com
S: Maintained
F: sound/soc/codecs/tfa989x.c
NXP-NCI NFC DRIVER
-R: Charles Gorand <charles.gorand@effinnov.com>
L: linux-nfc@lists.01.org (subscribers-only)
-S: Supported
+S: Orphan
F: Documentation/devicetree/bindings/net/nfc/nxp,nci.yaml
F: drivers/nfc/nxp-nci
L: linux-media@vger.kernel.org
S: Maintained
T: git git://linuxtv.org/media_tree.git
+F: Documentation/devicetree/bindings/media/i2c/ovti,ov5693.yaml
F: drivers/media/i2c/ov5693.c
OMNIVISION OV5695 SENSOR DRIVER
OPENCOMPUTE PTP CLOCK DRIVER
M: Jonathan Lemon <jonathan.lemon@gmail.com>
+M: Vadim Fedorenko <vadfed@fb.com>
L: netdev@vger.kernel.org
S: Maintained
F: drivers/ptp/ptp_ocp.c
M: Andrew Lunn <andrew@lunn.ch>
L: linux-i2c@vger.kernel.org
S: Maintained
-F: Documentation/devicetree/bindings/i2c/i2c-ocores.txt
+F: Documentation/devicetree/bindings/i2c/opencores,i2c-ocores.yaml
F: Documentation/i2c/busses/i2c-ocores.rst
F: drivers/i2c/busses/i2c-ocores.c
F: include/linux/platform_data/i2c-ocores.h
M: Dong Aisheng <aisheng.dong@nxp.com>
M: Fabio Estevam <festevam@gmail.com>
M: Shawn Guo <shawnguo@kernel.org>
-M: Stefan Agner <stefan@agner.ch>
+M: Jacky Bai <ping.bai@nxp.com>
R: Pengutronix Kernel Team <kernel@pengutronix.de>
L: linux-gpio@vger.kernel.org
S: Maintained
PIN CONTROLLER - INTEL
M: Mika Westerberg <mika.westerberg@linux.intel.com>
M: Andy Shevchenko <andy@kernel.org>
-S: Maintained
+S: Supported
T: git git://git.kernel.org/pub/scm/linux/kernel/git/pinctrl/intel.git
F: drivers/pinctrl/intel/
F: Documentation/devicetree/bindings/iio/chemical/plantower,pms7003.yaml
F: drivers/iio/chemical/pms7003.c
+PLATFORM FEATURE INFRASTRUCTURE
+M: Juergen Gross <jgross@suse.com>
+S: Maintained
+F: arch/*/include/asm/platform-feature.h
+F: include/asm-generic/platform-feature.h
+F: include/linux/platform-feature.h
+F: kernel/platform-feature.c
+
PLDMFW LIBRARY
M: Jacob Keller <jacob.e.keller@intel.com>
S: Maintained
PWM SUBSYSTEM
M: Thierry Reding <thierry.reding@gmail.com>
R: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
-M: Lee Jones <lee.jones@linaro.org>
L: linux-pwm@vger.kernel.org
S: Maintained
Q: https://patchwork.ozlabs.org/project/linux-pwm/list/
F: drivers/gpio/gpio-mvebu.c
F: drivers/pwm/
F: drivers/video/backlight/pwm_bl.c
+F: include/dt-bindings/pwm/
F: include/linux/pwm.h
F: include/linux/pwm_backlight.h
K: pwm_(config|apply_state|ops)
QCOM AUDIO (ASoC) DRIVERS
M: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
-M: Banajit Goswami <bgoswami@codeaurora.org>
+M: Banajit Goswami <bgoswami@quicinc.com>
L: alsa-devel@alsa-project.org (moderated for non-subscribers)
S: Supported
F: sound/soc/codecs/lpass-va-macro.c
F: drivers/cpufreq/qcom-cpufreq-nvmem.c
QUALCOMM CRYPTO DRIVERS
-M: Thara Gopinath <thara.gopinath@linaro.org>
+M: Thara Gopinath <thara.gopinath@gmail.com>
L: linux-crypto@vger.kernel.org
L: linux-arm-msm@vger.kernel.org
S: Maintained
F: Documentation/devicetree/bindings/i2c/i2c-qcom-cci.txt
F: drivers/i2c/busses/i2c-qcom-cci.c
+QUALCOMM INTERCONNECT BWMON DRIVER
+M: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
+L: linux-arm-msm@vger.kernel.org
+S: Maintained
+F: Documentation/devicetree/bindings/interconnect/qcom,msm8998-bwmon.yaml
+F: drivers/soc/qcom/icc-bwmon.c
+
QUALCOMM IOMMU
M: Rob Clark <robdclark@gmail.com>
-L: iommu@lists.linux-foundation.org
+L: iommu@lists.linux.dev
L: linux-arm-msm@vger.kernel.org
S: Maintained
F: drivers/iommu/arm/arm-smmu/qcom_iommu.c
QUALCOMM TSENS THERMAL DRIVER
M: Amit Kucheria <amitk@kernel.org>
-M: Thara Gopinath <thara.gopinath@linaro.org>
+M: Thara Gopinath <thara.gopinath@gmail.com>
L: linux-pm@vger.kernel.org
L: linux-arm-msm@vger.kernel.org
S: Maintained
F: Documentation/devicetree/bindings/iio/adc/renesas,rzg2l-adc.yaml
F: drivers/iio/adc/rzg2l_adc.c
+RENESAS RZ/N1 A5PSW SWITCH DRIVER
+M: Clément Léger <clement.leger@bootlin.com>
+L: linux-renesas-soc@vger.kernel.org
+L: netdev@vger.kernel.org
+S: Maintained
+F: Documentation/devicetree/bindings/net/dsa/renesas,rzn1-a5psw.yaml
+F: Documentation/devicetree/bindings/net/pcs/renesas,rzn1-miic.yaml
+F: drivers/net/dsa/rzn1_a5psw*
+F: drivers/net/pcs/pcs-rzn1-miic.c
+F: include/dt-bindings/net/pcs-rzn1-miic.h
+F: include/linux/pcs-rzn1-miic.h
+F: net/dsa/tag_rzn1_a5psw.c
+
RENESAS RZ/N1 RTC CONTROLLER DRIVER
M: Miquel Raynal <miquel.raynal@bootlin.com>
L: linux-rtc@vger.kernel.org
K: riscv
RISC-V/MICROCHIP POLARFIRE SOC SUPPORT
-M: Lewis Hanly <lewis.hanly@microchip.com>
M: Conor Dooley <conor.dooley@microchip.com>
+M: Daire McNamara <daire.mcnamara@microchip.com>
L: linux-riscv@lists.infradead.org
S: Supported
F: arch/riscv/boot/dts/microchip/
+F: drivers/char/hw_random/mpfs-rng.c
+F: drivers/clk/microchip/clk-mpfs.c
F: drivers/mailbox/mailbox-mpfs.c
+F: drivers/pci/controller/pcie-microchip-host.c
F: drivers/soc/microchip/
+F: drivers/spi/spi-microchip-core.c
F: include/soc/microchip/mpfs.h
RNBD BLOCK DRIVERS
R: Andy Lutomirski <luto@amacapital.net>
R: Will Drewry <wad@chromium.org>
S: Supported
-T: git git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git seccomp
+T: git git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git for-next/seccomp
F: Documentation/userspace-api/seccomp_filter.rst
F: include/linux/seccomp.h
F: include/uapi/linux/seccomp.h
F: Documentation/admin-guide/security-bugs.rst
SECURITY SUBSYSTEM
+M: Paul Moore <paul@paul-moore.com>
M: James Morris <jmorris@namei.org>
M: "Serge E. Hallyn" <serge@hallyn.com>
L: linux-security-module@vger.kernel.org (suggested Cc:)
S: Supported
W: http://kernsec.org/
-T: git git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security.git
+T: git git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/lsm.git
F: security/
X: security/selinux/
M: Russell King <linux@armlinux.org.uk>
L: netdev@vger.kernel.org
S: Maintained
+F: Documentation/devicetree/bindings/net/sff,sfp.yaml
F: drivers/net/phy/phylink.c
F: drivers/net/phy/sfp*
F: include/linux/mdio/mdio-i2c.h
SHARED MEMORY COMMUNICATIONS (SMC) SOCKETS
M: Karsten Graul <kgraul@linux.ibm.com>
+M: Wenjia Zhang <wenjia@linux.ibm.com>
L: linux-s390@vger.kernel.org
S: Supported
W: http://www.ibm.com/developerworks/linux/linux390/
F: include/linux/sl?b*.h
F: mm/sl?b*
+SLCAN CAN NETWORK DRIVER
+M: Dario Binacchi <dario.binacchi@amarulasolutions.com>
+L: linux-can@vger.kernel.org
+S: Maintained
+F: drivers/net/can/slcan/
+
SLEEPABLE READ-COPY UPDATE (SRCU)
M: Lai Jiangshan <jiangshanlai@gmail.com>
M: "Paul E. McKenney" <paulmck@kernel.org>
SOUND - SOUND OPEN FIRMWARE (SOF) DRIVERS
M: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
M: Liam Girdwood <lgirdwood@gmail.com>
+M: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
+M: Bard Liao <yung-chuan.liao@linux.intel.com>
M: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
-M: Kai Vehmanen <kai.vehmanen@linux.intel.com>
+R: Kai Vehmanen <kai.vehmanen@linux.intel.com>
M: Daniel Baluta <daniel.baluta@nxp.com>
L: sound-open-firmware@alsa-project.org (moderated for non-subscribers)
S: Supported
SWIOTLB SUBSYSTEM
M: Christoph Hellwig <hch@infradead.org>
-L: iommu@lists.linux-foundation.org
+L: iommu@lists.linux.dev
S: Supported
W: http://git.infradead.org/users/hch/dma-mapping.git
T: git git://git.infradead.org/users/hch/dma-mapping.git
SYNOPSYS AXS10x RESET CONTROLLER DRIVER
M: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
S: Supported
-F: Documentation/devicetree/bindings/reset/snps,axs10x-reset.txt
+F: Documentation/devicetree/bindings/reset/snps,axs10x-reset.yaml
F: drivers/reset/reset-axs10x.c
SYNOPSYS CREG GPIO DRIVER
R: Mika Westerberg <mika.westerberg@linux.intel.com>
R: Jan Dabros <jsd@semihalf.com>
L: linux-i2c@vger.kernel.org
-S: Maintained
+S: Supported
F: drivers/i2c/busses/i2c-designware-*
SYNOPSYS DESIGNWARE MMC/SD/SDIO DRIVER
L: linux-media@vger.kernel.org
L: linux-tegra@vger.kernel.org
S: Maintained
-F: Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-host1x.txt
+F: Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-host1x.yaml
F: drivers/staging/media/tegra-video/
TEGRA XUSB PADCTL DRIVER
F: Documentation/devicetree/bindings/thermal/
F: Documentation/driver-api/thermal/
F: drivers/thermal/
+F: include/dt-bindings/thermal/
F: include/linux/cpu_cooling.h
F: include/linux/thermal.h
F: include/uapi/linux/thermal.h
TRADITIONAL CHINESE DOCUMENTATION
M: Hu Haowen <src.res@email.cn>
-L: linux-doc-tw-discuss@lists.sourceforge.net
+L: linux-doc-tw-discuss@lists.sourceforge.net (moderated for non-subscribers)
S: Maintained
W: https://github.com/srcres258/linux-doc
T: git git://github.com/srcres258/linux-doc.git doc-zh-tw
F: Documentation/filesystems/ubifs.rst
F: fs/ubifs/
+UBLK USERSPACE BLOCK DRIVER
+M: Ming Lei <ming.lei@redhat.com>
+L: linux-block@vger.kernel.org
+S: Maintained
+F: drivers/block/ublk_drv.c
+F: include/uapi/linux/ublk_cmd.h
+
UCLINUX (M68KNOMMU AND COLDFIRE)
M: Greg Ungerer <gerg@linux-m68k.org>
L: linux-m68k@lists.linux-m68k.org
F: Documentation/devicetree/bindings/usb/
F: Documentation/usb/
F: drivers/usb/
+F: include/dt-bindings/usb/
F: include/linux/usb.h
F: include/linux/usb/
L: virtualization@lists.linux-foundation.org
S: Maintained
F: Documentation/ABI/testing/sysfs-bus-vdpa
+F: Documentation/ABI/testing/sysfs-class-vduse
F: Documentation/devicetree/bindings/virtio/
F: drivers/block/virtio_blk.c
F: drivers/crypto/virtio/
S: Maintained
F: drivers/input/tablet/wacom_serial4.c
+WANGXUN ETHERNET DRIVER
+M: Jiawen Wu <jiawenwu@trustnetic.com>
+L: netdev@vger.kernel.org
+S: Maintained
+F: Documentation/networking/device_drivers/ethernet/wangxun/txgbe.rst
+F: drivers/net/ethernet/wangxun/
+
WATCHDOG DEVICE DRIVERS
M: Wim Van Sebroeck <wim@linux-watchdog.org>
M: Guenter Roeck <linux@roeck-us.net>
F: drivers/media/rc/winbond-cir.c
WINSYSTEMS EBC-C384 WATCHDOG DRIVER
-M: William Breathitt Gray <vilhelm.gray@gmail.com>
+M: William Breathitt Gray <william.gray@linaro.org>
L: linux-watchdog@vger.kernel.org
S: Maintained
F: drivers/watchdog/ebc-c384_wdt.c
WINSYSTEMS WS16C48 GPIO DRIVER
-M: William Breathitt Gray <vilhelm.gray@gmail.com>
+M: William Breathitt Gray <william.gray@linaro.org>
L: linux-gpio@vger.kernel.org
S: Maintained
F: drivers/gpio/gpio-ws16c48.c
F: include/uapi/linux/xdp_diag.h
F: include/net/netns/xdp.h
F: net/xdp/
-F: samples/bpf/xdpsock*
-F: tools/lib/bpf/xsk*
+F: tools/testing/selftests/bpf/*xsk*
XEN BLOCK SUBSYSTEM
M: Roger Pau Monné <roger.pau@citrix.com>
M: Juergen Gross <jgross@suse.com>
M: Stefano Stabellini <sstabellini@kernel.org>
L: xen-devel@lists.xenproject.org (moderated for non-subscribers)
-L: iommu@lists.linux-foundation.org
+L: iommu@lists.linux.dev
S: Supported
F: arch/x86/xen/*swiotlb*
F: drivers/xen/*swiotlb*
YAMA SECURITY MODULE
M: Kees Cook <keescook@chromium.org>
S: Supported
-T: git git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git yama/tip
+T: git git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git for-next/hardening
F: Documentation/admin-guide/LSM/Yama.rst
F: security/yama/
#include <linux/idr.h>
#include <linux/platform_data/x86/apple.h>
#include <linux/ptp_clock_kernel.h>
+#include <linux/percpu.h>
#define CREATE_TRACE_POINTS
#include <trace/events/spi.h>
spi_controller_put(spi->controller);
kfree(spi->driver_override);
+ free_percpu(spi->pcpu_statistics);
kfree(spi);
}
}
static DEVICE_ATTR_RW(driver_override);
+static struct spi_statistics *spi_alloc_pcpu_stats(struct device *dev)
+{
+ struct spi_statistics __percpu *pcpu_stats;
+
+ if (dev)
+ pcpu_stats = devm_alloc_percpu(dev, struct spi_statistics);
+ else
+ pcpu_stats = alloc_percpu_gfp(struct spi_statistics, GFP_KERNEL);
+
+ if (pcpu_stats) {
+ int cpu;
+
+ for_each_possible_cpu(cpu) {
+ struct spi_statistics *stat;
+
+ stat = per_cpu_ptr(pcpu_stats, cpu);
+ u64_stats_init(&stat->syncp);
+ }
+ }
+ return pcpu_stats;
+}
+
+#define spi_pcpu_stats_totalize(ret, in, field) \
+do { \
+ int i; \
+ ret = 0; \
+ for_each_possible_cpu(i) { \
+ const struct spi_statistics *pcpu_stats; \
+ u64 inc; \
+ unsigned int start; \
+ pcpu_stats = per_cpu_ptr(in, i); \
+ do { \
+ start = u64_stats_fetch_begin_irq( \
+ &pcpu_stats->syncp); \
+ inc = u64_stats_read(&pcpu_stats->field); \
+ } while (u64_stats_fetch_retry_irq( \
+ &pcpu_stats->syncp, start)); \
+ ret += inc; \
+ } \
+} while (0)
+
#define SPI_STATISTICS_ATTRS(field, file) \
static ssize_t spi_controller_##field##_show(struct device *dev, \
struct device_attribute *attr, \
{ \
struct spi_controller *ctlr = container_of(dev, \
struct spi_controller, dev); \
- return spi_statistics_##field##_show(&ctlr->statistics, buf); \
+ return spi_statistics_##field##_show(ctlr->pcpu_statistics, buf); \
} \
static struct device_attribute dev_attr_spi_controller_##field = { \
.attr = { .name = file, .mode = 0444 }, \
char *buf) \
{ \
struct spi_device *spi = to_spi_device(dev); \
- return spi_statistics_##field##_show(&spi->statistics, buf); \
+ return spi_statistics_##field##_show(spi->pcpu_statistics, buf); \
} \
static struct device_attribute dev_attr_spi_device_##field = { \
.attr = { .name = file, .mode = 0444 }, \
.show = spi_device_##field##_show, \
}
-#define SPI_STATISTICS_SHOW_NAME(name, file, field, format_string) \
+#define SPI_STATISTICS_SHOW_NAME(name, file, field) \
static ssize_t spi_statistics_##name##_show(struct spi_statistics *stat, \
char *buf) \
{ \
- unsigned long flags; \
ssize_t len; \
- spin_lock_irqsave(&stat->lock, flags); \
- len = sysfs_emit(buf, format_string "\n", stat->field); \
- spin_unlock_irqrestore(&stat->lock, flags); \
+ u64 val; \
+ spi_pcpu_stats_totalize(val, stat, field); \
+ len = sysfs_emit(buf, "%llu\n", val); \
return len; \
} \
SPI_STATISTICS_ATTRS(name, file)
-#define SPI_STATISTICS_SHOW(field, format_string) \
+#define SPI_STATISTICS_SHOW(field) \
SPI_STATISTICS_SHOW_NAME(field, __stringify(field), \
- field, format_string)
+ field)
-SPI_STATISTICS_SHOW(messages, "%lu");
-SPI_STATISTICS_SHOW(transfers, "%lu");
-SPI_STATISTICS_SHOW(errors, "%lu");
-SPI_STATISTICS_SHOW(timedout, "%lu");
+SPI_STATISTICS_SHOW(messages);
+SPI_STATISTICS_SHOW(transfers);
+SPI_STATISTICS_SHOW(errors);
+SPI_STATISTICS_SHOW(timedout);
-SPI_STATISTICS_SHOW(spi_sync, "%lu");
-SPI_STATISTICS_SHOW(spi_sync_immediate, "%lu");
-SPI_STATISTICS_SHOW(spi_async, "%lu");
+SPI_STATISTICS_SHOW(spi_sync);
+SPI_STATISTICS_SHOW(spi_sync_immediate);
+SPI_STATISTICS_SHOW(spi_async);
-SPI_STATISTICS_SHOW(bytes, "%llu");
-SPI_STATISTICS_SHOW(bytes_rx, "%llu");
-SPI_STATISTICS_SHOW(bytes_tx, "%llu");
+SPI_STATISTICS_SHOW(bytes);
+SPI_STATISTICS_SHOW(bytes_rx);
+SPI_STATISTICS_SHOW(bytes_tx);
#define SPI_STATISTICS_TRANSFER_BYTES_HISTO(index, number) \
SPI_STATISTICS_SHOW_NAME(transfer_bytes_histo##index, \
"transfer_bytes_histo_" number, \
- transfer_bytes_histo[index], "%lu")
+ transfer_bytes_histo[index])
SPI_STATISTICS_TRANSFER_BYTES_HISTO(0, "0-1");
SPI_STATISTICS_TRANSFER_BYTES_HISTO(1, "2-3");
SPI_STATISTICS_TRANSFER_BYTES_HISTO(2, "4-7");
SPI_STATISTICS_TRANSFER_BYTES_HISTO(15, "32768-65535");
SPI_STATISTICS_TRANSFER_BYTES_HISTO(16, "65536+");
-SPI_STATISTICS_SHOW(transfers_split_maxsize, "%lu");
+SPI_STATISTICS_SHOW(transfers_split_maxsize);
static struct attribute *spi_dev_attrs[] = {
&dev_attr_modalias.attr,
NULL,
};
-static void spi_statistics_add_transfer_stats(struct spi_statistics *stats,
+static void spi_statistics_add_transfer_stats(struct spi_statistics *pcpu_stats,
struct spi_transfer *xfer,
struct spi_controller *ctlr)
{
- unsigned long flags;
int l2len = min(fls(xfer->len), SPI_STATISTICS_HISTO_SIZE) - 1;
+ struct spi_statistics *stats;
if (l2len < 0)
l2len = 0;
- spin_lock_irqsave(&stats->lock, flags);
+ get_cpu();
+ stats = this_cpu_ptr(pcpu_stats);
+ u64_stats_update_begin(&stats->syncp);
- stats->transfers++;
- stats->transfer_bytes_histo[l2len]++;
+ u64_stats_inc(&stats->transfers);
+ u64_stats_inc(&stats->transfer_bytes_histo[l2len]);
- stats->bytes += xfer->len;
+ u64_stats_add(&stats->bytes, xfer->len);
if ((xfer->tx_buf) &&
(xfer->tx_buf != ctlr->dummy_tx))
- stats->bytes_tx += xfer->len;
+ u64_stats_add(&stats->bytes_tx, xfer->len);
if ((xfer->rx_buf) &&
(xfer->rx_buf != ctlr->dummy_rx))
- stats->bytes_rx += xfer->len;
+ u64_stats_add(&stats->bytes_rx, xfer->len);
- spin_unlock_irqrestore(&stats->lock, flags);
+ u64_stats_update_end(&stats->syncp);
+ put_cpu();
}
/*
return NULL;
}
+ spi->pcpu_statistics = spi_alloc_pcpu_stats(NULL);
+ if (!spi->pcpu_statistics) {
+ kfree(spi);
+ spi_controller_put(ctlr);
+ return NULL;
+ }
+
spi->master = spi->controller = ctlr;
spi->dev.parent = &ctlr->dev;
spi->dev.bus = &spi_bus_type;
spi->dev.release = spidev_release;
spi->mode = ctlr->buswidth_override_bits;
- spin_lock_init(&spi->statistics.lock);
-
device_initialize(&spi->dev);
return spi;
}
struct spi_message *msg,
struct spi_transfer *xfer)
{
- struct spi_statistics *statm = &ctlr->statistics;
- struct spi_statistics *stats = &msg->spi->statistics;
+ struct spi_statistics *statm = ctlr->pcpu_statistics;
+ struct spi_statistics *stats = msg->spi->pcpu_statistics;
u32 speed_hz = xfer->speed_hz;
unsigned long long ms;
/* Nothing to do here */
break;
case SPI_DELAY_UNIT_SCK:
- /* clock cycles need to be obtained from spi_transfer */
+ /* Clock cycles need to be obtained from spi_transfer */
if (!xfer)
return -EINVAL;
/*
u32 unit = xfer->cs_change_delay.unit;
int ret;
- /* return early on "fast" mode - for everything but USECS */
+ /* Return early on "fast" mode - for everything but USECS */
if (!delay) {
if (unit == SPI_DELAY_UNIT_USECS)
_spi_transfer_delay_ns(default_delay_ns);
struct spi_transfer *xfer;
bool keep_cs = false;
int ret = 0;
- struct spi_statistics *statm = &ctlr->statistics;
- struct spi_statistics *stats = &msg->spi->statistics;
+ struct spi_statistics *statm = ctlr->pcpu_statistics;
+ struct spi_statistics *stats = msg->spi->pcpu_statistics;
spi_set_cs(msg->spi, true, false);
}
}
+static int __spi_pump_transfer_message(struct spi_controller *ctlr,
+ struct spi_message *msg, bool was_busy)
+{
+ struct spi_transfer *xfer;
+ int ret;
+
+ if (!was_busy && ctlr->auto_runtime_pm) {
+ ret = pm_runtime_get_sync(ctlr->dev.parent);
+ if (ret < 0) {
+ pm_runtime_put_noidle(ctlr->dev.parent);
+ dev_err(&ctlr->dev, "Failed to power device: %d\n",
+ ret);
+ return ret;
+ }
+ }
+
+ if (!was_busy)
+ trace_spi_controller_busy(ctlr);
+
+ if (!was_busy && ctlr->prepare_transfer_hardware) {
+ ret = ctlr->prepare_transfer_hardware(ctlr);
+ if (ret) {
+ dev_err(&ctlr->dev,
+ "failed to prepare transfer hardware: %d\n",
+ ret);
+
+ if (ctlr->auto_runtime_pm)
+ pm_runtime_put(ctlr->dev.parent);
+
+ msg->status = ret;
+ spi_finalize_current_message(ctlr);
+
+ return ret;
+ }
+ }
+
+ trace_spi_message_start(msg);
+
+ if (ctlr->prepare_message) {
+ ret = ctlr->prepare_message(ctlr, msg);
+ if (ret) {
+ dev_err(&ctlr->dev, "failed to prepare message: %d\n",
+ ret);
+ msg->status = ret;
+ spi_finalize_current_message(ctlr);
+ return ret;
+ }
+ msg->prepared = true;
+ }
+
+ ret = spi_map_msg(ctlr, msg);
+ if (ret) {
+ msg->status = ret;
+ spi_finalize_current_message(ctlr);
+ return ret;
+ }
+
+ if (!ctlr->ptp_sts_supported && !ctlr->transfer_one) {
+ list_for_each_entry(xfer, &msg->transfers, transfer_list) {
+ xfer->ptp_sts_word_pre = 0;
+ ptp_read_system_prets(xfer->ptp_sts);
+ }
+ }
+
+ /*
+ * Drivers implementation of transfer_one_message() must arrange for
+ * spi_finalize_current_message() to get called. Most drivers will do
+ * this in the calling context, but some don't. For those cases, a
+ * completion is used to guarantee that this function does not return
+ * until spi_finalize_current_message() is done accessing
+ * ctlr->cur_msg.
+ * Use of the following two flags enable to opportunistically skip the
+ * use of the completion since its use involves expensive spin locks.
+ * In case of a race with the context that calls
+ * spi_finalize_current_message() the completion will always be used,
+ * due to strict ordering of these flags using barriers.
+ */
+ WRITE_ONCE(ctlr->cur_msg_incomplete, true);
+ WRITE_ONCE(ctlr->cur_msg_need_completion, false);
+ reinit_completion(&ctlr->cur_msg_completion);
+ smp_wmb(); /* Make these available to spi_finalize_current_message() */
+
+ ret = ctlr->transfer_one_message(ctlr, msg);
+ if (ret) {
+ dev_err(&ctlr->dev,
+ "failed to transfer one message from queue\n");
+ return ret;
+ }
+
+ WRITE_ONCE(ctlr->cur_msg_need_completion, true);
+ smp_mb(); /* See spi_finalize_current_message()... */
+ if (READ_ONCE(ctlr->cur_msg_incomplete))
+ wait_for_completion(&ctlr->cur_msg_completion);
+
+ return 0;
+}
+
/**
* __spi_pump_messages - function which processes spi message queue
* @ctlr: controller to process queue for
*/
static void __spi_pump_messages(struct spi_controller *ctlr, bool in_kthread)
{
- struct spi_transfer *xfer;
struct spi_message *msg;
bool was_busy = false;
unsigned long flags;
int ret;
+ /* Take the IO mutex */
+ mutex_lock(&ctlr->io_mutex);
+
/* Lock queue */
spin_lock_irqsave(&ctlr->queue_lock, flags);
/* Make sure we are not already running a message */
- if (ctlr->cur_msg) {
- spin_unlock_irqrestore(&ctlr->queue_lock, flags);
- return;
- }
-
- /* If another context is idling the device then defer */
- if (ctlr->idling) {
- kthread_queue_work(ctlr->kworker, &ctlr->pump_messages);
- spin_unlock_irqrestore(&ctlr->queue_lock, flags);
- return;
- }
+ if (ctlr->cur_msg)
+ goto out_unlock;
/* Check if the queue is idle */
if (list_empty(&ctlr->queue) || !ctlr->running) {
- if (!ctlr->busy) {
- spin_unlock_irqrestore(&ctlr->queue_lock, flags);
- return;
- }
+ if (!ctlr->busy)
+ goto out_unlock;
/* Defer any non-atomic teardown to the thread */
if (!in_kthread) {
!ctlr->unprepare_transfer_hardware) {
spi_idle_runtime_pm(ctlr);
ctlr->busy = false;
+ ctlr->queue_empty = true;
trace_spi_controller_idle(ctlr);
} else {
kthread_queue_work(ctlr->kworker,
&ctlr->pump_messages);
}
- spin_unlock_irqrestore(&ctlr->queue_lock, flags);
- return;
+ goto out_unlock;
}
ctlr->busy = false;
- ctlr->idling = true;
spin_unlock_irqrestore(&ctlr->queue_lock, flags);
kfree(ctlr->dummy_rx);
trace_spi_controller_idle(ctlr);
spin_lock_irqsave(&ctlr->queue_lock, flags);
- ctlr->idling = false;
- spin_unlock_irqrestore(&ctlr->queue_lock, flags);
- return;
+ ctlr->queue_empty = true;
+ goto out_unlock;
}
/* Extract head of queue */
ctlr->busy = true;
spin_unlock_irqrestore(&ctlr->queue_lock, flags);
- mutex_lock(&ctlr->io_mutex);
-
- if (!was_busy && ctlr->auto_runtime_pm) {
- ret = pm_runtime_resume_and_get(ctlr->dev.parent);
- if (ret < 0) {
- dev_err(&ctlr->dev, "Failed to power device: %d\n",
- ret);
- mutex_unlock(&ctlr->io_mutex);
- return;
- }
- }
-
- if (!was_busy)
- trace_spi_controller_busy(ctlr);
-
- if (!was_busy && ctlr->prepare_transfer_hardware) {
- ret = ctlr->prepare_transfer_hardware(ctlr);
- if (ret) {
- dev_err(&ctlr->dev,
- "failed to prepare transfer hardware: %d\n",
- ret);
-
- if (ctlr->auto_runtime_pm)
- pm_runtime_put(ctlr->dev.parent);
-
- msg->status = ret;
- spi_finalize_current_message(ctlr);
-
- mutex_unlock(&ctlr->io_mutex);
- return;
- }
- }
-
- trace_spi_message_start(msg);
-
- if (ctlr->prepare_message) {
- ret = ctlr->prepare_message(ctlr, msg);
- if (ret) {
- dev_err(&ctlr->dev, "failed to prepare message: %d\n",
- ret);
- msg->status = ret;
- spi_finalize_current_message(ctlr);
- goto out;
- }
- ctlr->cur_msg_prepared = true;
- }
-
- ret = spi_map_msg(ctlr, msg);
- if (ret) {
- msg->status = ret;
- spi_finalize_current_message(ctlr);
- goto out;
- }
-
- if (!ctlr->ptp_sts_supported && !ctlr->transfer_one) {
- list_for_each_entry(xfer, &msg->transfers, transfer_list) {
- xfer->ptp_sts_word_pre = 0;
- ptp_read_system_prets(xfer->ptp_sts);
- }
- }
+ ret = __spi_pump_transfer_message(ctlr, msg, was_busy);
+ if (!ret)
+ kthread_queue_work(ctlr->kworker, &ctlr->pump_messages);
- ret = ctlr->transfer_one_message(ctlr, msg);
- if (ret) {
- dev_err(&ctlr->dev,
- "failed to transfer one message from queue: %d\n",
- ret);
- goto out;
- }
+ ctlr->cur_msg = NULL;
+ ctlr->fallback = false;
-out:
mutex_unlock(&ctlr->io_mutex);
/* Prod the scheduler in case transfer_one() was busy waiting */
if (!ret)
cond_resched();
+ return;
+
+out_unlock:
+ spin_unlock_irqrestore(&ctlr->queue_lock, flags);
+ mutex_unlock(&ctlr->io_mutex);
}
/**
{
ctlr->running = false;
ctlr->busy = false;
+ ctlr->queue_empty = true;
ctlr->kworker = kthread_create_worker(0, dev_name(&ctlr->dev));
if (IS_ERR(ctlr->kworker)) {
struct spi_message *next;
unsigned long flags;
- /* get a pointer to the next message, if any */
+ /* Get a pointer to the next message, if any */
spin_lock_irqsave(&ctlr->queue_lock, flags);
next = list_first_entry_or_null(&ctlr->queue, struct spi_message,
queue);
{
struct spi_transfer *xfer;
struct spi_message *mesg;
- unsigned long flags;
int ret;
- spin_lock_irqsave(&ctlr->queue_lock, flags);
mesg = ctlr->cur_msg;
- spin_unlock_irqrestore(&ctlr->queue_lock, flags);
if (!ctlr->ptp_sts_supported && !ctlr->transfer_one) {
list_for_each_entry(xfer, &mesg->transfers, transfer_list) {
*/
spi_res_release(ctlr, mesg);
- if (ctlr->cur_msg_prepared && ctlr->unprepare_message) {
+ if (mesg->prepared && ctlr->unprepare_message) {
ret = ctlr->unprepare_message(ctlr, mesg);
if (ret) {
dev_err(&ctlr->dev, "failed to unprepare message: %d\n",
}
}
- spin_lock_irqsave(&ctlr->queue_lock, flags);
- ctlr->cur_msg = NULL;
- ctlr->cur_msg_prepared = false;
- ctlr->fallback = false;
- kthread_queue_work(ctlr->kworker, &ctlr->pump_messages);
- spin_unlock_irqrestore(&ctlr->queue_lock, flags);
+ mesg->prepared = false;
+
+ WRITE_ONCE(ctlr->cur_msg_incomplete, false);
+ smp_mb(); /* See __spi_pump_transfer_message()... */
+ if (READ_ONCE(ctlr->cur_msg_need_completion))
+ complete(&ctlr->cur_msg_completion);
trace_spi_message_done(mesg);
msg->status = -EINPROGRESS;
list_add_tail(&msg->queue, &ctlr->queue);
+ ctlr->queue_empty = false;
if (!ctlr->busy && need_pump)
kthread_queue_work(ctlr->kworker, &ctlr->pump_messages);
if (lookup->index != -1 && lookup->n++ != lookup->index)
return 1;
- if (lookup->index == -1 && !ctlr)
- return -ENODEV;
-
status = acpi_get_handle(NULL,
sb->resource_source.string_ptr,
&parent_handle);
ctlr = acpi_spi_find_controller_by_adev(adev);
if (!ctlr)
- return -ENODEV;
+ return -EPROBE_DEFER;
lookup->ctlr = ctlr;
}
acpi_dev_free_resource_list(&resource_list);
if (ret < 0)
- /* found SPI in _CRS but it points to another controller */
- return ERR_PTR(-ENODEV);
+ /* Found SPI in _CRS but it points to another controller */
+ return ERR_PTR(ret);
if (!lookup.max_speed_hz &&
ACPI_SUCCESS(acpi_get_parent(adev->handle, &parent_handle)) &&
}
EXPORT_SYMBOL_GPL(spi_slave_abort);
- static int match_true(struct device *dev, void *data)
- {
- return 1;
- }
-
static ssize_t slave_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
dev);
struct device *child;
- child = device_find_child(&ctlr->dev, NULL, match_true);
+ child = device_find_any_child(&ctlr->dev);
return sprintf(buf, "%s\n",
child ? to_spi_device(child)->modalias : NULL);
}
if (rc != 1 || !name[0])
return -EINVAL;
- child = device_find_child(&ctlr->dev, NULL, match_true);
+ child = device_find_any_child(&ctlr->dev);
if (child) {
/* Remove registered slave */
device_unregister(child);
return status;
if (ctlr->bus_num >= 0) {
- /* devices with a fixed bus num must check-in with the num */
+ /* Devices with a fixed bus num must check-in with the num */
mutex_lock(&board_lock);
id = idr_alloc(&spi_master_idr, ctlr, ctlr->bus_num,
ctlr->bus_num + 1, GFP_KERNEL);
return id == -ENOSPC ? -EBUSY : id;
ctlr->bus_num = id;
} else if (ctlr->dev.of_node) {
- /* allocate dynamic bus number using Linux idr */
+ /* Allocate dynamic bus number using Linux idr */
id = of_alias_get_id(ctlr->dev.of_node, "spi");
if (id >= 0) {
ctlr->bus_num = id;
}
ctlr->bus_lock_flag = 0;
init_completion(&ctlr->xfer_completion);
+ init_completion(&ctlr->cur_msg_completion);
if (!ctlr->max_dma_len)
ctlr->max_dma_len = INT_MAX;
goto free_bus_id;
}
- /* setting last_cs to -1 means no chip selected */
+ /* Setting last_cs to -1 means no chip selected */
ctlr->last_cs = -1;
status = device_add(&ctlr->dev);
goto free_bus_id;
}
}
- /* add statistics */
- spin_lock_init(&ctlr->statistics.lock);
+ /* Add statistics */
+ ctlr->pcpu_statistics = spi_alloc_pcpu_stats(dev);
+ if (!ctlr->pcpu_statistics) {
+ dev_err(dev, "Error allocating per-cpu statistics\n");
+ status = -ENOMEM;
+ goto destroy_queue;
+ }
mutex_lock(&board_lock);
list_add_tail(&ctlr->list, &spi_controller_list);
acpi_register_spi_devices(ctlr);
return status;
+destroy_queue:
+ spi_destroy_queue(ctlr);
free_bus_id:
mutex_lock(&board_lock);
idr_remove(&spi_master_idr, ctlr->bus_num);
}
EXPORT_SYMBOL_GPL(spi_register_controller);
-static void devm_spi_unregister(void *ctlr)
+static void devm_spi_unregister(struct device *dev, void *res)
{
- spi_unregister_controller(ctlr);
+ spi_unregister_controller(*(struct spi_controller **)res);
}
/**
int devm_spi_register_controller(struct device *dev,
struct spi_controller *ctlr)
{
+ struct spi_controller **ptr;
int ret;
+ ptr = devres_alloc(devm_spi_unregister, sizeof(*ptr), GFP_KERNEL);
+ if (!ptr)
+ return -ENOMEM;
+
ret = spi_register_controller(ctlr);
- if (ret)
- return ret;
+ if (!ret) {
+ *ptr = ctlr;
+ devres_add(dev, ptr);
+ } else {
+ devres_free(ptr);
+ }
- return devm_add_action_or_reset(dev, devm_spi_unregister, ctlr);
+ return ret;
}
EXPORT_SYMBOL_GPL(devm_spi_register_controller);
device_del(&ctlr->dev);
- /* free bus id */
+ /* Free bus id */
mutex_lock(&board_lock);
if (found == ctlr)
idr_remove(&spi_master_idr, id);
struct spi_replaced_transfers *rxfer = res;
size_t i;
- /* call extra callback if requested */
+ /* Call extra callback if requested */
if (rxfer->release)
rxfer->release(ctlr, msg, res);
- /* insert replaced transfers back into the message */
+ /* Insert replaced transfers back into the message */
list_splice(&rxfer->replaced_transfers, rxfer->replaced_after);
- /* remove the formerly inserted entries */
+ /* Remove the formerly inserted entries */
for (i = 0; i < rxfer->inserted; i++)
list_del(&rxfer->inserted_transfers[i].transfer_list);
}
struct spi_transfer *xfer;
size_t i;
- /* allocate the structure using spi_res */
+ /* Allocate the structure using spi_res */
rxfer = spi_res_alloc(msg->spi, __spi_replace_transfers_release,
struct_size(rxfer, inserted_transfers, insert)
+ extradatasize,
if (!rxfer)
return ERR_PTR(-ENOMEM);
- /* the release code to invoke before running the generic release */
+ /* The release code to invoke before running the generic release */
rxfer->release = release;
- /* assign extradata */
+ /* Assign extradata */
if (extradatasize)
rxfer->extradata =
&rxfer->inserted_transfers[insert];
- /* init the replaced_transfers list */
+ /* Init the replaced_transfers list */
INIT_LIST_HEAD(&rxfer->replaced_transfers);
/*
*/
rxfer->replaced_after = xfer_first->transfer_list.prev;
- /* remove the requested number of transfers */
+ /* Remove the requested number of transfers */
for (i = 0; i < remove; i++) {
/*
* If the entry after replaced_after it is msg->transfers
if (rxfer->replaced_after->next == &msg->transfers) {
dev_err(&msg->spi->dev,
"requested to remove more spi_transfers than are available\n");
- /* insert replaced transfers back into the message */
+ /* Insert replaced transfers back into the message */
list_splice(&rxfer->replaced_transfers,
rxfer->replaced_after);
- /* free the spi_replace_transfer structure */
+ /* Free the spi_replace_transfer structure... */
spi_res_free(rxfer);
- /* and return with an error */
+ /* ...and return with an error */
return ERR_PTR(-EINVAL);
}
* based on the first transfer to get removed.
*/
for (i = 0; i < insert; i++) {
- /* we need to run in reverse order */
+ /* We need to run in reverse order */
xfer = &rxfer->inserted_transfers[insert - 1 - i];
- /* copy all spi_transfer data */
+ /* Copy all spi_transfer data */
memcpy(xfer, xfer_first, sizeof(*xfer));
- /* add to list */
+ /* Add to list */
list_add(&xfer->transfer_list, rxfer->replaced_after);
- /* clear cs_change and delay for all but the last */
+ /* Clear cs_change and delay for all but the last */
if (i) {
xfer->cs_change = false;
xfer->delay.value = 0;
}
}
- /* set up inserted */
+ /* Set up inserted... */
rxfer->inserted = insert;
- /* and register it with spi_res/spi_message */
+ /* ...and register it with spi_res/spi_message */
spi_res_add(msg, rxfer);
return rxfer;
size_t offset;
size_t count, i;
- /* calculate how many we have to replace */
+ /* Calculate how many we have to replace */
count = DIV_ROUND_UP(xfer->len, maxsize);
- /* create replacement */
+ /* Create replacement */
srt = spi_replace_transfers(msg, xfer, 1, count, NULL, 0, gfp);
if (IS_ERR(srt))
return PTR_ERR(srt);
*/
xfers[0].len = min_t(size_t, maxsize, xfer[0].len);
- /* all the others need rx_buf/tx_buf also set */
+ /* All the others need rx_buf/tx_buf also set */
for (i = 1, offset = maxsize; i < count; offset += maxsize, i++) {
- /* update rx_buf, tx_buf and dma */
+ /* Update rx_buf, tx_buf and dma */
if (xfers[i].rx_buf)
xfers[i].rx_buf += offset;
if (xfers[i].rx_dma)
if (xfers[i].tx_dma)
xfers[i].tx_dma += offset;
- /* update length */
+ /* Update length */
xfers[i].len = min(maxsize, xfers[i].len - offset);
}
*/
*xferp = &xfers[count - 1];
- /* increment statistics counters */
- SPI_STATISTICS_INCREMENT_FIELD(&ctlr->statistics,
+ /* Increment statistics counters */
+ SPI_STATISTICS_INCREMENT_FIELD(ctlr->pcpu_statistics,
transfers_split_maxsize);
- SPI_STATISTICS_INCREMENT_FIELD(&msg->spi->statistics,
+ SPI_STATISTICS_INCREMENT_FIELD(msg->spi->pcpu_statistics,
transfers_split_maxsize);
return 0;
return ret;
list_for_each_entry(xfer, &message->transfers, transfer_list) {
- /* don't change cs_change on the last entry in the list */
+ /* Don't change cs_change on the last entry in the list */
if (list_is_last(&xfer->transfer_list, &message->transfers))
break;
xfer->cs_change = 1;
!(spi->mode & SPI_TX_QUAD))
return -EINVAL;
}
- /* check transfer rx_nbits */
+ /* Check transfer rx_nbits */
if (xfer->rx_buf) {
if (spi->mode & SPI_NO_RX)
return -EINVAL;
message->spi = spi;
- SPI_STATISTICS_INCREMENT_FIELD(&ctlr->statistics, spi_async);
- SPI_STATISTICS_INCREMENT_FIELD(&spi->statistics, spi_async);
+ SPI_STATISTICS_INCREMENT_FIELD(ctlr->pcpu_statistics, spi_async);
+ SPI_STATISTICS_INCREMENT_FIELD(spi->pcpu_statistics, spi_async);
trace_spi_message_submit(message);
}
+static void __spi_transfer_message_noqueue(struct spi_controller *ctlr, struct spi_message *msg)
+{
+ bool was_busy;
+ int ret;
+
+ mutex_lock(&ctlr->io_mutex);
+
+ was_busy = ctlr->busy;
+
+ ctlr->cur_msg = msg;
+ ret = __spi_pump_transfer_message(ctlr, msg, was_busy);
+ if (ret)
+ goto out;
+
+ ctlr->cur_msg = NULL;
+ ctlr->fallback = false;
+
+ if (!was_busy) {
+ kfree(ctlr->dummy_rx);
+ ctlr->dummy_rx = NULL;
+ kfree(ctlr->dummy_tx);
+ ctlr->dummy_tx = NULL;
+ if (ctlr->unprepare_transfer_hardware &&
+ ctlr->unprepare_transfer_hardware(ctlr))
+ dev_err(&ctlr->dev,
+ "failed to unprepare transfer hardware\n");
+ spi_idle_runtime_pm(ctlr);
+ }
+
+out:
+ mutex_unlock(&ctlr->io_mutex);
+}
+
/*-------------------------------------------------------------------------*/
/*
DECLARE_COMPLETION_ONSTACK(done);
int status;
struct spi_controller *ctlr = spi->controller;
- unsigned long flags;
status = __spi_validate(spi, message);
if (status != 0)
return status;
- message->complete = spi_complete;
- message->context = &done;
message->spi = spi;
- SPI_STATISTICS_INCREMENT_FIELD(&ctlr->statistics, spi_sync);
- SPI_STATISTICS_INCREMENT_FIELD(&spi->statistics, spi_sync);
+ SPI_STATISTICS_INCREMENT_FIELD(ctlr->pcpu_statistics, spi_sync);
+ SPI_STATISTICS_INCREMENT_FIELD(spi->pcpu_statistics, spi_sync);
/*
- * If we're not using the legacy transfer method then we will
- * try to transfer in the calling context so special case.
- * This code would be less tricky if we could remove the
- * support for driver implemented message queues.
+ * Checking queue_empty here only guarantees async/sync message
+ * ordering when coming from the same context. It does not need to
+ * guard against reentrancy from a different context. The io_mutex
+ * will catch those cases.
*/
- if (ctlr->transfer == spi_queued_transfer) {
- spin_lock_irqsave(&ctlr->bus_lock_spinlock, flags);
+ if (READ_ONCE(ctlr->queue_empty)) {
+ message->actual_length = 0;
+ message->status = -EINPROGRESS;
trace_spi_message_submit(message);
- status = __spi_queued_transfer(spi, message, false);
+ SPI_STATISTICS_INCREMENT_FIELD(ctlr->pcpu_statistics, spi_sync_immediate);
+ SPI_STATISTICS_INCREMENT_FIELD(spi->pcpu_statistics, spi_sync_immediate);
- spin_unlock_irqrestore(&ctlr->bus_lock_spinlock, flags);
- } else {
- status = spi_async_locked(spi, message);
+ __spi_transfer_message_noqueue(ctlr, message);
+
+ return message->status;
}
+ /*
+ * There are messages in the async queue that could have originated
+ * from the same context, so we need to preserve ordering.
+ * Therefor we send the message to the async queue and wait until they
+ * are completed.
+ */
+ message->complete = spi_complete;
+ message->context = &done;
+ status = spi_async_locked(spi, message);
if (status == 0) {
- /* Push out the messages in the calling context if we can */
- if (ctlr->transfer == spi_queued_transfer) {
- SPI_STATISTICS_INCREMENT_FIELD(&ctlr->statistics,
- spi_sync_immediate);
- SPI_STATISTICS_INCREMENT_FIELD(&spi->statistics,
- spi_sync_immediate);
- __spi_pump_messages(ctlr, false);
- }
-
wait_for_completion(&done);
status = message->status;
}
message->context = NULL;
+
return status;
}
ctlr->bus_lock_flag = 1;
spin_unlock_irqrestore(&ctlr->bus_lock_spinlock, flags);
- /* mutex remains locked until spi_bus_unlock is called */
+ /* Mutex remains locked until spi_bus_unlock() is called */
return 0;
}
}
EXPORT_SYMBOL_GPL(spi_bus_unlock);
-/* portable code must never pass more than 32 bytes */
+/* Portable code must never pass more than 32 bytes */
#define SPI_BUFSIZ max(32, SMP_CACHE_BYTES)
static u8 *buf;
x[0].tx_buf = local_buf;
x[1].rx_buf = local_buf + n_tx;
- /* do the i/o */
+ /* Do the i/o */
status = spi_sync(spi, &message);
if (status == 0)
memcpy(rxbuf, x[1].rx_buf, n_rx);
/*-------------------------------------------------------------------------*/
#if IS_ENABLED(CONFIG_OF_DYNAMIC)
-/* must call put_device() when done with returned spi_device device */
+/* Must call put_device() when done with returned spi_device device */
static struct spi_device *of_find_spi_device_by_node(struct device_node *node)
{
struct device *dev = bus_find_device_by_of_node(&spi_bus_type, node);
return dev ? to_spi_device(dev) : NULL;
}
-/* the spi controllers are not using spi_bus, so we find it with another way */
+/* The spi controllers are not using spi_bus, so we find it with another way */
static struct spi_controller *of_find_spi_controller_by_node(struct device_node *node)
{
struct device *dev;
if (!dev)
return NULL;
- /* reference got in class_find_device */
+ /* Reference got in class_find_device */
return container_of(dev, struct spi_controller, dev);
}
case OF_RECONFIG_CHANGE_ADD:
ctlr = of_find_spi_controller_by_node(rd->dn->parent);
if (ctlr == NULL)
- return NOTIFY_OK; /* not for us */
+ return NOTIFY_OK; /* Not for us */
if (of_node_test_and_set_flag(rd->dn, OF_POPULATED)) {
put_device(&ctlr->dev);
break;
case OF_RECONFIG_CHANGE_REMOVE:
- /* already depopulated? */
+ /* Already depopulated? */
if (!of_node_check_flag(rd->dn, OF_POPULATED))
return NOTIFY_OK;
- /* find our device by node */
+ /* Find our device by node */
spi = of_find_spi_device_by_node(rd->dn);
if (spi == NULL)
- return NOTIFY_OK; /* no? not meant for us */
+ return NOTIFY_OK; /* No? not meant for us */
- /* unregister takes one ref away */
+ /* Unregister takes one ref away */
spi_unregister_device(spi);
- /* and put the reference of the find */
+ /* And put the reference of the find */
put_device(&spi->dev);
break;
}
git.samba.org / sfrench / cifs-2.6.git / commitdiff