diff options
Diffstat (limited to 'arch/xtensa')
| -rw-r--r-- | arch/xtensa/include/asm/checksum.h | 30 |
1 files changed, 16 insertions, 14 deletions
diff --git a/arch/xtensa/include/asm/checksum.h b/arch/xtensa/include/asm/checksum.h index dc09448935bf..fe78fba7bd64 100644 --- a/arch/xtensa/include/asm/checksum.h +++ b/arch/xtensa/include/asm/checksum.h @@ -55,14 +55,16 @@ __wsum csum_partial_copy_nocheck(const void *src, void *dst, int len) #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) + int len) { - if (access_ok(src, len)) - return csum_partial_copy_generic((__force const void *)src, dst, - len, sum, err_ptr, NULL); - if (len) - *err_ptr = -EFAULT; - return sum; + int err = 0; + + if (!access_ok(src, len)) + return 0; + + sum = csum_partial_copy_generic((__force const void *)src, dst, + len, ~0U, &err, NULL); + return err ? 0 : sum; } /* @@ -243,15 +245,15 @@ static __inline__ __sum16 csum_ipv6_magic(const struct in6_addr *saddr, */ #define HAVE_CSUM_COPY_USER static __inline__ __wsum csum_and_copy_to_user(const void *src, - void __user *dst, int len, - __wsum sum, int *err_ptr) + void __user *dst, int len) { - if (access_ok(dst, len)) - return csum_partial_copy_generic(src,dst,len,sum,NULL,err_ptr); + int err = 0; + __wsum sum = ~0U; - if (len) - *err_ptr = -EFAULT; + if (!access_ok(dst, len)) + return 0; - return (__force __wsum)-1; /* invalid checksum */ + sum = csum_partial_copy_generic(src,dst,len,sum,NULL,&err); + return err ? 0 : sum; } #endif |