lib: Remove umoddi3 and udivmoddi4

These were only necessary for an out-of-tree driver that has since been
fixed to use the proper divide routines.  I've simply reverted the pair
of commits we made last week.

Signed-off-by: Palmer Dabbelt <palmer@sifive.com>

diff --git a/arch/riscv/include/asm/elf.h b/arch/riscv/include/asm/elf.h
index a1ef503d616ed05760fcb324e579bb71e842d6bc..697fc23b0d5ae4f6d6cd508e8d0a2804c277e0ee 100644 (file)
--- a/arch/riscv/include/asm/elf.h
+++ b/arch/riscv/include/asm/elf.h
@@ -16,9 +16,6 @@
 #include <asm/auxvec.h>
 #include <asm/byteorder.h>
 
-/* TODO: Move definition into include/uapi/linux/elf-em.h */
-#define EM_RISCV       0xF3
-
 /*
  * These are used to set parameters in the core dumps.
  */

diff --git a/arch/riscv/kernel/cpufeature.c b/arch/riscv/kernel/cpufeature.c
index 5493f3228704740e913e0d5883d1cca99ba7f645..0339087aa6520dba2790e6d31caa5d4f089c75b6 100644 (file)
--- a/arch/riscv/kernel/cpufeature.c
+++ b/arch/riscv/kernel/cpufeature.c
@@ -28,7 +28,7 @@ bool has_fpu __read_mostly;
 
 void riscv_fill_hwcap(void)
 {
-       struct device_node *node;
+       struct device_node *node = NULL;
        const char *isa;
        size_t i;
        static unsigned long isa2hwcap[256] = {0};
@@ -44,9 +44,11 @@ void riscv_fill_hwcap(void)
 
        /*
         * We don't support running Linux on hertergenous ISA systems.  For
-        * now, we just check the ISA of the first processor.
+        * now, we just check the ISA of the first "okay" processor.
         */
-       node = of_find_node_by_type(NULL, "cpu");
+       while ((node = of_find_node_by_type(node, "cpu")))
+               if (riscv_of_processor_hartid(node) >= 0)
+                       break;
        if (!node) {
                pr_warning("Unable to find \"cpu\" devicetree entry");
                return;

diff --git a/include/uapi/linux/elf-em.h b/include/uapi/linux/elf-em.h
index 31aa101783351547469f4efc67b0bb9c9e0f10f1..93722e60204c607377bf20efeca54df08e78bbd4 100644 (file)
--- a/include/uapi/linux/elf-em.h
+++ b/include/uapi/linux/elf-em.h
@@ -41,6 +41,7 @@
 #define EM_TILEPRO     188     /* Tilera TILEPro */
 #define EM_MICROBLAZE  189     /* Xilinx MicroBlaze */
 #define EM_TILEGX      191     /* Tilera TILE-Gx */
+#define EM_RISCV       243     /* RISC-V */
 #define EM_BPF         247     /* Linux BPF - in-kernel virtual machine */
 #define EM_FRV         0x5441  /* Fujitsu FR-V */