diff options
| author | Al Viro <viro@zeniv.linux.org.uk> | 2020-02-18 14:26:32 -0500 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2020-05-29 16:11:50 -0400 |
| commit | 5904122c46581a5ccee54a51ef07e0d891fd7aef (patch) | |
| tree | 433bbafc1e3a3cdbfd291d51cfd858186683dff2 /arch/x86/um | |
| parent | 24f9aa928c3cc88bae573b39b6976844968f80a0 (diff) | |
take the dummy csum_and_copy_from_user() into net/checksum.h
now that can be done conveniently - all non-trivial cases have
_HAVE_ARCH_COPY_AND_CSUM_FROM_USER defined, so the fallback in
net/checksum.h is used only for dummy (copy_from_user, then
csum_partial) implementation. Allowing us to get rid of all
dummy instances, both of csum_and_copy_from_user() and
csum_partial_copy_from_user().
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'arch/x86/um')
| -rw-r--r-- | arch/x86/um/asm/checksum.h | 20 |
1 files changed, 0 insertions, 20 deletions
diff --git a/arch/x86/um/asm/checksum.h b/arch/x86/um/asm/checksum.h index 2a56cac64687..ff6bba2c8ab6 100644 --- a/arch/x86/um/asm/checksum.h +++ b/arch/x86/um/asm/checksum.h @@ -36,26 +36,6 @@ __wsum csum_partial_copy_nocheck(const void *src, void *dst, return csum_partial(dst, len, sum); } -/* - * the same as csum_partial, but copies from src while it - * checksums, and handles user-space pointer exceptions correctly, when needed. - * - * here even more important to align src and dst on a 32-bit (or even - * better 64-bit) boundary - */ - -static __inline__ -__wsum csum_partial_copy_from_user(const void __user *src, void *dst, - int len, __wsum sum, int *err_ptr) -{ - if (copy_from_user(dst, src, len)) { - *err_ptr = -EFAULT; - return (__force __wsum)-1; - } - - return csum_partial(dst, len, sum); -} - /** * csum_fold - Fold and invert a 32bit checksum. * sum: 32bit unfolded sum |