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| author | Thomas Gleixner <tglx@linutronix.de> | 2016-09-20 23:20:32 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2016-09-20 23:20:32 +0200 |
| commit | 464b5847e61085f81bb99ce48eb427a0dc7617dc (patch) | |
| tree | 805c97855a9a13c06910687bbbbe3eb7bc371902 /arch/ia64/include | |
| parent | Merge branch 'irq/for-block' into irq/core (diff) | |
| parent | irqchip/mips-gic: Fix local interrupts (diff) | |
| download | linux-464b5847e61085f81bb99ce48eb427a0dc7617dc.tar.xz linux-464b5847e61085f81bb99ce48eb427a0dc7617dc.zip | |
Merge branch 'irq/urgent' into irq/core
Merge urgent fixes so pending patches for 4.9 can be applied.
Diffstat (limited to 'arch/ia64/include')
| -rw-r--r-- | arch/ia64/include/asm/uaccess.h | 23 |
1 files changed, 10 insertions, 13 deletions
diff --git a/arch/ia64/include/asm/uaccess.h b/arch/ia64/include/asm/uaccess.h index 0472927ebb9b..bfe13196f770 100644 --- a/arch/ia64/include/asm/uaccess.h +++ b/arch/ia64/include/asm/uaccess.h @@ -269,19 +269,16 @@ __copy_from_user (void *to, const void __user *from, unsigned long count) __cu_len; \ }) -#define copy_from_user(to, from, n) \ -({ \ - void *__cu_to = (to); \ - const void __user *__cu_from = (from); \ - long __cu_len = (n); \ - \ - __chk_user_ptr(__cu_from); \ - if (__access_ok(__cu_from, __cu_len, get_fs())) { \ - check_object_size(__cu_to, __cu_len, false); \ - __cu_len = __copy_user((__force void __user *) __cu_to, __cu_from, __cu_len); \ - } \ - __cu_len; \ -}) +static inline unsigned long +copy_from_user(void *to, const void __user *from, unsigned long n) +{ + check_object_size(to, n, false); + if (likely(__access_ok(from, n, get_fs()))) + n = __copy_user((__force void __user *) to, from, n); + else + memset(to, 0, n); + return n; +} #define __copy_in_user(to, from, size) __copy_user((to), (from), (size)) |