Merge tag 'objtool-urgent-2021-06-24' of git://git.kernel.org/pub/scm/linux/kernel...

Pull objtool fixes from Ingo Molnar:
 "Address a number of objtool warnings that got reported.

  No change in behavior intended, but code generation might be impacted
  by commit 1f008d46f124 ("x86: Always inline task_size_max()")"

* tag 'objtool-urgent-2021-06-24' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  locking/lockdep: Improve noinstr vs errors
  x86: Always inline task_size_max()
  x86/xen: Fix noinstr fail in exc_xen_unknown_trap()
  x86/xen: Fix noinstr fail in xen_pv_evtchn_do_upcall()
  x86/entry: Fix noinstr fail in __do_fast_syscall_32()
  objtool/x86: Ignore __x86_indirect_alt_* symbols

diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index 1a5edf562e85efe5f33745548326e4d4a5373b24..73ca7797b92f62f9ba4c1d977165702d1b22a8a5 100644 (file)
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -545,9 +545,11 @@ void notrace cpu_init(void)
         * In Thumb-2, msr with an immediate value is not allowed.
         */
 #ifdef CONFIG_THUMB2_KERNEL
-#define PLC    "r"
+#define PLC_l  "l"
+#define PLC_r  "r"
 #else
-#define PLC    "I"
+#define PLC_l  "I"
+#define PLC_r  "I"
 #endif
 
        /*
@@ -569,15 +571,15 @@ void notrace cpu_init(void)
        "msr    cpsr_c, %9"
            :
            : "r" (stk),
-             PLC (PSR_F_BIT | PSR_I_BIT | IRQ_MODE),
+             PLC_r (PSR_F_BIT | PSR_I_BIT | IRQ_MODE),
              "I" (offsetof(struct stack, irq[0])),
-             PLC (PSR_F_BIT | PSR_I_BIT | ABT_MODE),
+             PLC_r (PSR_F_BIT | PSR_I_BIT | ABT_MODE),
              "I" (offsetof(struct stack, abt[0])),
-             PLC (PSR_F_BIT | PSR_I_BIT | UND_MODE),
+             PLC_r (PSR_F_BIT | PSR_I_BIT | UND_MODE),
              "I" (offsetof(struct stack, und[0])),
-             PLC (PSR_F_BIT | PSR_I_BIT | FIQ_MODE),
+             PLC_r (PSR_F_BIT | PSR_I_BIT | FIQ_MODE),
              "I" (offsetof(struct stack, fiq[0])),
-             PLC (PSR_F_BIT | PSR_I_BIT | SVC_MODE)
+             PLC_l (PSR_F_BIT | PSR_I_BIT | SVC_MODE)
            : "r14");
 #endif
 }

diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index b717680377a9e7380d59dca5a1c7c67d6cd9b92c..8d4ebe095d0c8041c608a908fd1b74c207a11ff0 100644 (file)
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -1900,11 +1900,21 @@ static int pci_enable_device_flags(struct pci_dev *dev, unsigned long flags)
        int err;
        int i, bars = 0;
 
-       if (atomic_inc_return(&dev->enable_cnt) > 1) {
-               pci_update_current_state(dev, dev->current_state);
-               return 0;               /* already enabled */
+       /*
+        * Power state could be unknown at this point, either due to a fresh
+        * boot or a device removal call.  So get the current power state
+        * so that things like MSI message writing will behave as expected
+        * (e.g. if the device really is in D0 at enable time).
+        */
+       if (dev->pm_cap) {
+               u16 pmcsr;
+               pci_read_config_word(dev, dev->pm_cap + PCI_PM_CTRL, &pmcsr);
+               dev->current_state = (pmcsr & PCI_PM_CTRL_STATE_MASK);
        }
 
+       if (atomic_inc_return(&dev->enable_cnt) > 1)
+               return 0;               /* already enabled */
+
        bridge = pci_upstream_bridge(dev);
        if (bridge)
                pci_enable_bridge(bridge);

diff --git a/drivers/spi/spi-nxp-fspi.c b/drivers/spi/spi-nxp-fspi.c
index 6e6c2403944dd21d23b1a4501c4c1706475ffa41..a66fa97046ee1d8f17f0d11ed5e3fb688e37a87b 100644 (file)
--- a/drivers/spi/spi-nxp-fspi.c
+++ b/drivers/spi/spi-nxp-fspi.c
@@ -1124,12 +1124,6 @@ static int nxp_fspi_probe(struct platform_device *pdev)
                goto err_put_ctrl;
        }
 
-       /* Clear potential interrupts */
-       reg = fspi_readl(f, f->iobase + FSPI_INTR);
-       if (reg)
-               fspi_writel(f, reg, f->iobase + FSPI_INTR);
-
-
        /* find the resources - controller memory mapped space */
        if (is_acpi_node(f->dev->fwnode))
                res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
@@ -1167,6 +1161,11 @@ static int nxp_fspi_probe(struct platform_device *pdev)
                }
        }
 
+       /* Clear potential interrupts */
+       reg = fspi_readl(f, f->iobase + FSPI_INTR);
+       if (reg)
+               fspi_writel(f, reg, f->iobase + FSPI_INTR);
+
        /* find the irq */
        ret = platform_get_irq(pdev, 0);
        if (ret < 0)

diff --git a/drivers/spi/spi-tegra20-slink.c b/drivers/spi/spi-tegra20-slink.c
index f7c832fd40036c725405ee059193e5afe65e61f2..6a726c95ac7a89a523a73ca10e1f3249e6852756 100644 (file)
--- a/drivers/spi/spi-tegra20-slink.c
+++ b/drivers/spi/spi-tegra20-slink.c
@@ -1118,6 +1118,11 @@ static int tegra_slink_probe(struct platform_device *pdev)
                pm_runtime_put_noidle(&pdev->dev);
                goto exit_pm_disable;
        }
+
+       reset_control_assert(tspi->rst);
+       udelay(2);
+       reset_control_deassert(tspi->rst);
+
        tspi->def_command_reg  = SLINK_M_S;
        tspi->def_command2_reg = SLINK_CS_ACTIVE_BETWEEN;
        tegra_slink_writel(tspi, tspi->def_command_reg, SLINK_COMMAND);

diff --git a/kernel/dma/swiotlb.c b/kernel/dma/swiotlb.c
index 8ca7d505d61cf287c775bcb44763ea884da6d1da..e50df8d8f87e28caa858cf156d1f1737d7128a7a 100644 (file)
--- a/kernel/dma/swiotlb.c
+++ b/kernel/dma/swiotlb.c
@@ -334,6 +334,14 @@ void __init swiotlb_exit(void)
        io_tlb_default_mem = NULL;
 }
 
+/*
+ * Return the offset into a iotlb slot required to keep the device happy.
+ */
+static unsigned int swiotlb_align_offset(struct device *dev, u64 addr)
+{
+       return addr & dma_get_min_align_mask(dev) & (IO_TLB_SIZE - 1);
+}
+
 /*
  * Bounce: copy the swiotlb buffer from or back to the original dma location
  */
@@ -346,10 +354,17 @@ static void swiotlb_bounce(struct device *dev, phys_addr_t tlb_addr, size_t size
        size_t alloc_size = mem->slots[index].alloc_size;
        unsigned long pfn = PFN_DOWN(orig_addr);
        unsigned char *vaddr = phys_to_virt(tlb_addr);
+       unsigned int tlb_offset;
 
        if (orig_addr == INVALID_PHYS_ADDR)
                return;
 
+       tlb_offset = (tlb_addr & (IO_TLB_SIZE - 1)) -
+                    swiotlb_align_offset(dev, orig_addr);
+
+       orig_addr += tlb_offset;
+       alloc_size -= tlb_offset;
+
        if (size > alloc_size) {
                dev_WARN_ONCE(dev, 1,
                        "Buffer overflow detected. Allocation size: %zu. Mapping size: %zu.\n",
@@ -390,14 +405,6 @@ static void swiotlb_bounce(struct device *dev, phys_addr_t tlb_addr, size_t size
 
 #define slot_addr(start, idx)  ((start) + ((idx) << IO_TLB_SHIFT))
 
-/*
- * Return the offset into a iotlb slot required to keep the device happy.
- */
-static unsigned int swiotlb_align_offset(struct device *dev, u64 addr)
-{
-       return addr & dma_get_min_align_mask(dev) & (IO_TLB_SIZE - 1);
-}
-
 /*
  * Carefully handle integer overflow which can occur when boundary_mask == ~0UL.
  */

diff --git a/kernel/module.c b/kernel/module.c
index 7e78dfabca97fc652b1e2f7fd4d4e6168ae3a149..927d46cb8eb930fff0468730f91841676ddbfdc2 100644 (file)
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -266,9 +266,18 @@ static void module_assert_mutex_or_preempt(void)
 #endif
 }
 
+#ifdef CONFIG_MODULE_SIG
 static bool sig_enforce = IS_ENABLED(CONFIG_MODULE_SIG_FORCE);
 module_param(sig_enforce, bool_enable_only, 0644);
 
+void set_module_sig_enforced(void)
+{
+       sig_enforce = true;
+}
+#else
+#define sig_enforce false
+#endif
+
 /*
  * Export sig_enforce kernel cmdline parameter to allow other subsystems rely
  * on that instead of directly to CONFIG_MODULE_SIG_FORCE config.
@@ -279,11 +288,6 @@ bool is_module_sig_enforced(void)
 }
 EXPORT_SYMBOL(is_module_sig_enforced);
 
-void set_module_sig_enforced(void)
-{
-       sig_enforce = true;
-}
-
 /* Block module loading/unloading? */
 int modules_disabled = 0;
 core_param(nomodule, modules_disabled, bint, 0);