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authorAl Viro <viro@zeniv.linux.org.uk>2020-07-23 05:14:36 +0300
committerAl Viro <viro@zeniv.linux.org.uk>2020-08-20 22:45:14 +0300
commit6e41c585e38ff696de3a11509a0ad0a11150b0c3 (patch)
tree6af77b846b7523063a645913fa6a2c6563beb238 /arch/x86/um
parent3ea7ca80d9c0ff606b5a129dce2354f771a9e4e8 (diff)
downloadlinux-6e41c585e38ff696de3a11509a0ad0a11150b0c3.tar.xz
unify generic instances of csum_partial_copy_nocheck()
quite a few architectures have the same csum_partial_copy_nocheck() - simply memcpy() the data and then return the csum of the copy. hexagon, parisc, ia64, s390, um: explicitly spelled out that way. arc, arm64, csky, h8300, m68k/nommu, microblaze, mips/GENERIC_CSUM, nds32, nios2, openrisc, riscv, unicore32: end up picking the same thing spelled out in lib/checksum.h (with varying amounts of perversions along the way). everybody else (alpha, arm, c6x, m68k/mmu, mips/!GENERIC_CSUM, powerpc, sh, sparc, x86, xtensa) have non-generic variants. For all except c6x the declaration is in their asm/checksum.h. c6x uses the wrapper from asm-generic/checksum.h that would normally lead to the lib/checksum.h instance, but in case of c6x we end up using an asm function from arch/c6x instead. Screw that mess - have architectures with private instances define _HAVE_ARCH_CSUM_AND_COPY in their asm/checksum.h and have the default one right in net/checksum.h conditional on _HAVE_ARCH_CSUM_AND_COPY *not* defined. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'arch/x86/um')
-rw-r--r--arch/x86/um/asm/checksum.h16
1 files changed, 0 insertions, 16 deletions
diff --git a/arch/x86/um/asm/checksum.h b/arch/x86/um/asm/checksum.h
index ff6bba2c8ab6..b07824500363 100644
--- a/arch/x86/um/asm/checksum.h
+++ b/arch/x86/um/asm/checksum.h
@@ -20,22 +20,6 @@
*/
extern __wsum csum_partial(const void *buff, int len, __wsum sum);
-/*
- * Note: when you get a NULL pointer exception here this means someone
- * passed in an incorrect kernel address to one of these functions.
- *
- * If you use these functions directly please don't forget the
- * access_ok().
- */
-
-static __inline__
-__wsum csum_partial_copy_nocheck(const void *src, void *dst,
- int len, __wsum sum)
-{
- memcpy(dst, src, len);
- return csum_partial(dst, len, sum);
-}
-
/**
* csum_fold - Fold and invert a 32bit checksum.
* sum: 32bit unfolded sum