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| author | Al Viro <viro@zeniv.linux.org.uk> | 2020-07-11 06:12:07 +0200 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2020-08-20 21:45:14 +0200 |
| commit | cc44c17baf7f3f833d36b2f2a1edb1cc0b6f2cc4 (patch) | |
| tree | 78e1d7c77dfd8cc862ba559d4c4c6653a5002c1b /arch/arm/lib | |
| parent | unify generic instances of csum_partial_copy_nocheck() (diff) | |
| download | linux-cc44c17baf7f3f833d36b2f2a1edb1cc0b6f2cc4.tar.xz linux-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/arm/lib')
| -rw-r--r-- | arch/arm/lib/csumpartialcopy.S | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/arch/arm/lib/csumpartialcopy.S b/arch/arm/lib/csumpartialcopy.S index 184d97254a7a..aab914fbc86b 100644 --- a/arch/arm/lib/csumpartialcopy.S +++ b/arch/arm/lib/csumpartialcopy.S @@ -9,13 +9,14 @@ .text -/* Function: __u32 csum_partial_copy_nocheck(const char *src, char *dst, int len, __u32 sum) - * Params : r0 = src, r1 = dst, r2 = len, r3 = checksum +/* Function: __u32 csum_partial_copy_nocheck(const char *src, char *dst, int len) + * Params : r0 = src, r1 = dst, r2 = len * Returns : r0 = new checksum */ .macro save_regs stmfd sp!, {r1, r4 - r8, lr} + mov r3, #0 .endm .macro load_regs |