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| author | Al Viro <viro@zeniv.linux.org.uk> | 2017-03-22 13:08:32 -0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2017-03-28 18:23:50 -0400 |
| commit | de51d6cc2cf9daa9b5155faefb714f5b477cf160 (patch) | |
| tree | f7ab7e25a42407a2473a8cd95f0ff7288c83a7b3 | |
| parent | 981db65b5229edb5ab336e3e23758791a1aa0b03 (diff) | |
| download | linux-de51d6cc2cf9daa9b5155faefb714f5b477cf160.tar.bz2 | |
nios2: switch to RAW_COPY_USER
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| -rw-r--r-- | arch/nios2/Kconfig | 1 | ||||
| -rw-r--r-- | arch/nios2/include/asm/uaccess.h | 31 | ||||
| -rw-r--r-- | arch/nios2/mm/uaccess.c | 16 |
3 files changed, 15 insertions, 33 deletions
diff --git a/arch/nios2/Kconfig b/arch/nios2/Kconfig index 51a56c8b04b4..45b4727e3136 100644 --- a/arch/nios2/Kconfig +++ b/arch/nios2/Kconfig @@ -16,6 +16,7 @@ config NIOS2 select SPARSE_IRQ select USB_ARCH_HAS_HCD if USB_SUPPORT select CPU_NO_EFFICIENT_FFS + select ARCH_HAS_RAW_COPY_USER config GENERIC_CSUM def_bool y diff --git a/arch/nios2/include/asm/uaccess.h b/arch/nios2/include/asm/uaccess.h index ed06750a6c92..727bd9504899 100644 --- a/arch/nios2/include/asm/uaccess.h +++ b/arch/nios2/include/asm/uaccess.h @@ -73,36 +73,17 @@ static inline unsigned long __must_check clear_user(void __user *to, return __clear_user(to, n); } -extern long __copy_from_user(void *to, const void __user *from, - unsigned long n); -extern long __copy_to_user(void __user *to, const void *from, unsigned long n); - -static inline long copy_from_user(void *to, const void __user *from, - unsigned long n) -{ - unsigned long res = n; - if (access_ok(VERIFY_READ, from, n)) - res = __copy_from_user(to, from, n); - if (unlikely(res)) - memset(to + (n - res), 0, res); - return res; -} - -static inline long copy_to_user(void __user *to, const void *from, - unsigned long n) -{ - if (!access_ok(VERIFY_WRITE, to, n)) - return n; - return __copy_to_user(to, from, n); -} +extern unsigned long +raw_copy_from_user(void *to, const void __user *from, unsigned long n); +extern unsigned long +raw_copy_to_user(void __user *to, const void *from, unsigned long n); +#define INLINE_COPY_FROM_USER +#define INLINE_COPY_TO_USER extern long strncpy_from_user(char *__to, const char __user *__from, long __len); extern long strnlen_user(const char __user *s, long n); -#define __copy_from_user_inatomic __copy_from_user -#define __copy_to_user_inatomic __copy_to_user - /* Optimized macros */ #define __get_user_asm(val, insn, addr, err) \ { \ diff --git a/arch/nios2/mm/uaccess.c b/arch/nios2/mm/uaccess.c index 7663e156ff4f..804983317766 100644 --- a/arch/nios2/mm/uaccess.c +++ b/arch/nios2/mm/uaccess.c @@ -10,9 +10,9 @@ #include <linux/export.h> #include <linux/uaccess.h> -asm(".global __copy_from_user\n" - " .type __copy_from_user, @function\n" - "__copy_from_user:\n" +asm(".global raw_copy_from_user\n" + " .type raw_copy_from_user, @function\n" + "raw_copy_from_user:\n" " movi r2,7\n" " mov r3,r4\n" " bge r2,r6,1f\n" @@ -65,12 +65,12 @@ asm(".global __copy_from_user\n" ".word 7b,13b\n" ".previous\n" ); -EXPORT_SYMBOL(__copy_from_user); +EXPORT_SYMBOL(raw_copy_from_user); asm( - " .global __copy_to_user\n" - " .type __copy_to_user, @function\n" - "__copy_to_user:\n" + " .global raw_copy_to_user\n" + " .type raw_copy_to_user, @function\n" + "raw_copy_to_user:\n" " movi r2,7\n" " mov r3,r4\n" " bge r2,r6,1f\n" @@ -127,7 +127,7 @@ asm( ".word 11b,13b\n" ".word 12b,13b\n" ".previous\n"); -EXPORT_SYMBOL(__copy_to_user); +EXPORT_SYMBOL(raw_copy_to_user); long strncpy_from_user(char *__to, const char __user *__from, long __len) { |