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authorJames Hogan <james.hogan@imgtec.com>2017-06-29 12:12:35 +0300
committerRalf Baechle <ralf@linux-mips.org>2017-07-11 15:13:06 +0300
commitbecddba9f80f26a2b9ebe9bad2806304ed5e00e1 (patch)
tree93e393bee3f3bf46d62e208da2ced0b7022c8605 /arch/mips/Makefile.postlink
parent4f32a39d49b25eaa66d2420f1f03d371ea4cd906 (diff)
downloadlinux-becddba9f80f26a2b9ebe9bad2806304ed5e00e1.tar.xz
MIPS: Correct forced syscall errors
When the system call return value is forced to be an error (for example due to SECCOMP_RET_ERRNO), syscall_set_return_value() puts the error code in the return register $v0 and -1 in the error register $a3. However normally executed system calls put 1 in the error register rather than -1, so fix syscall_set_return_value() to be consistent with that. I don't anticipate that anything would have been broken by this, since the most natural way to check the error register on MIPS would be a conditional branch if error register is [not] equal to zero (bnez or beqz). Fixes: 1d7bf993e073 ("MIPS: ftrace: Add support for syscall tracepoints.") Signed-off-by: James Hogan <james.hogan@imgtec.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/16652/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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