diff options
| -rw-r--r-- | arch/arm/include/asm/checksum.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/arm/include/asm/checksum.h b/arch/arm/include/asm/checksum.h index 20043e0ebb07..ed6073fee338 100644 --- a/arch/arm/include/asm/checksum.h +++ b/arch/arm/include/asm/checksum.h @@ -40,6 +40,20 @@ csum_partial_copy_nocheck(const void *src, void *dst, int len, __wsum sum); __wsum csum_partial_copy_from_user(const void __user *src, void *dst, int len, __wsum sum, int *err_ptr); +#define _HAVE_ARCH_COPY_AND_CSUM_FROM_USER +static inline +__wsum csum_and_copy_from_user (const void __user *src, void *dst, + int len, __wsum sum, int *err_ptr) +{ + if (access_ok(src, len)) + return csum_partial_copy_from_user(src, dst, len, sum, err_ptr); + + if (len) + *err_ptr = -EFAULT; + + return sum; +} + /* * Fold a partial checksum without adding pseudo headers */ |