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efi_selftest: efi_st_memcmp return difference of bytes

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If the memory regions are different efi_st_memcmp currently
returns the difference of the addresses. Insted the
difference of the first differing byte pair should be
returned.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Heinrich Schuchardt 2017-10-06 20:39:13 +02:00 • committed by Alexander Graf
parent 5ca23ed5bc
commit c155dfeb1e
1 changed files with 1 additions and 1 deletions
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2
lib/efi_selftest/efi_selftest_util.c
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@ -17,7 +17,7 @@ int efi_st_memcmp(const void *buf1, const void *buf2, size_t length)
for (; length; --length) { for (; length; --length) {
if (*pos1 != *pos2) if (*pos1 != *pos2)
return pos1 - pos2; return *pos1 - *pos2;
++pos1; ++pos1;
++pos2; ++pos2;
} }