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| author | Al Viro <viro@zeniv.linux.org.uk> | 2020-07-11 00:12:07 -0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2020-08-20 15:45:14 -0400 |
| commit | cc44c17baf7f3f833d36b2f2a1edb1cc0b6f2cc4 (patch) | |
| tree | 78e1d7c77dfd8cc862ba559d4c4c6653a5002c1b /arch/alpha | |
| parent | 6e41c585e38ff696de3a11509a0ad0a11150b0c3 (diff) | |
| download | linux-stable-cc44c17baf7f3f833d36b2f2a1edb1cc0b6f2cc4.tar.gz linux-stable-cc44c17baf7f3f833d36b2f2a1edb1cc0b6f2cc4.tar.bz2 linux-stable-cc44c17baf7f3f833d36b2f2a1edb1cc0b6f2cc4.zip | |
csum_partial_copy_nocheck(): drop the last argument
It's always 0. Note that we theoretically could use ~0U as well -
result will be the same modulo 0xffff, _if_ the damn thing did the
right thing for any value of initial sum; later we'll make use of
that when convenient.
However, unlike csum_and_copy_..._user(), there are instances that
did not work for arbitrary initial sums; c6x is one such.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'arch/alpha')
| -rw-r--r-- | arch/alpha/include/asm/checksum.h | 2 | ||||
| -rw-r--r-- | arch/alpha/lib/csum_partial_copy.c | 4 |
2 files changed, 3 insertions, 3 deletions
diff --git a/arch/alpha/include/asm/checksum.h b/arch/alpha/include/asm/checksum.h index 7e8e4fa4362d..84f9faea864a 100644 --- a/arch/alpha/include/asm/checksum.h +++ b/arch/alpha/include/asm/checksum.h @@ -45,7 +45,7 @@ extern __wsum csum_partial(const void *buff, int len, __wsum sum); #define _HAVE_ARCH_CSUM_AND_COPY __wsum csum_and_copy_from_user(const void __user *src, void *dst, int len, __wsum sum, int *errp); -__wsum csum_partial_copy_nocheck(const void *src, void *dst, int len, __wsum sum); +__wsum csum_partial_copy_nocheck(const void *src, void *dst, int len); /* diff --git a/arch/alpha/lib/csum_partial_copy.c b/arch/alpha/lib/csum_partial_copy.c index af1dad74e933..f363dc89fcbe 100644 --- a/arch/alpha/lib/csum_partial_copy.c +++ b/arch/alpha/lib/csum_partial_copy.c @@ -372,13 +372,13 @@ csum_and_copy_from_user(const void __user *src, void *dst, int len, EXPORT_SYMBOL(csum_and_copy_from_user); __wsum -csum_partial_copy_nocheck(const void *src, void *dst, int len, __wsum sum) +csum_partial_copy_nocheck(const void *src, void *dst, int len) { __wsum checksum; mm_segment_t oldfs = get_fs(); set_fs(KERNEL_DS); checksum = csum_and_copy_from_user((__force const void __user *)src, - dst, len, sum, NULL); + dst, len, 0, NULL); set_fs(oldfs); return checksum; } |