diff options
| author | Leonid Yegoshin <Leonid.Yegoshin@imgtec.com> | 2013-12-17 09:30:13 +0000 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2014-03-26 23:09:17 +0100 |
| commit | c2d85bc1041c38bebf982a0d16242c3189ca1152 (patch) | |
| tree | 19592bd4aded88756458ee5604bdbea17bfa98ca /arch/mips/include | |
| parent | fb316913f820dae1f5772afaffb5700b601af24e (diff) | |
MIPS: asm: checksum: Add MIPS specific csum_and_copy_from_user function
A MIPS specific csum_and_copy_from_user function is necessary because
the generic one from include/net/checksum.h will not work for EVA.
This is because the generic one will link to symbols from lib/checksum.c
which are not EVA aware.
Signed-off-by: Leonid Yegoshin <Leonid.Yegoshin@imgtec.com>
Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Diffstat (limited to 'arch/mips/include')
| -rw-r--r-- | arch/mips/include/asm/checksum.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/mips/include/asm/checksum.h b/arch/mips/include/asm/checksum.h index f5602c6957c7..3418c51e1151 100644 --- a/arch/mips/include/asm/checksum.h +++ b/arch/mips/include/asm/checksum.h @@ -54,6 +54,20 @@ __wsum csum_partial_copy_from_user(const void __user *src, void *dst, int len, len, sum, err_ptr); } +#define _HAVE_ARCH_COPY_AND_CSUM_FROM_USER +static inline +__wsum csum_and_copy_from_user(const void __user *src, void *dst, + int len, __wsum sum, int *err_ptr) +{ + if (access_ok(VERIFY_READ, src, len)) + return csum_partial_copy_from_user(src, dst, len, sum, + err_ptr); + if (len) + *err_ptr = -EFAULT; + + return sum; +} + /* * Copy and checksum to user */ |