diff options
Diffstat (limited to 'arch/parisc/include/asm/uaccess.h')
| -rw-r--r-- | arch/parisc/include/asm/uaccess.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/arch/parisc/include/asm/uaccess.h b/arch/parisc/include/asm/uaccess.h index e9150487e20d..482847865dac 100644 --- a/arch/parisc/include/asm/uaccess.h +++ b/arch/parisc/include/asm/uaccess.h @@ -10,6 +10,7 @@ #include <asm-generic/uaccess-unaligned.h> #include <linux/bug.h> +#include <linux/string.h> #define VERIFY_READ 0 #define VERIFY_WRITE 1 @@ -221,7 +222,7 @@ static inline unsigned long __must_check copy_from_user(void *to, unsigned long n) { int sz = __compiletime_object_size(to); - int ret = -EFAULT; + unsigned long ret = n; if (likely(sz == -1 || sz >= n)) ret = __copy_from_user(to, from, n); @@ -230,6 +231,8 @@ static inline unsigned long __must_check copy_from_user(void *to, else __bad_copy_user(); + if (unlikely(ret)) + memset(to + (n - ret), 0, ret); return ret; } |