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| author | Max Filippov <jcmvbkbc@gmail.com> | 2019-11-29 01:25:20 -0800 |
|---|---|---|
| committer | Max Filippov <jcmvbkbc@gmail.com> | 2019-11-29 19:37:12 -0800 |
| commit | 9d9043f6a81713248d82d88983c06b1eaedda287 (patch) | |
| tree | 07e43db996f00f85a7ef86fcc2858c4e71895349 /arch/xtensa/kernel/signal.c | |
| parent | 02ce94c229251555ac726ecfebe3458ef5905fa9 (diff) | |
| download | lwn-9d9043f6a81713248d82d88983c06b1eaedda287.tar.gz lwn-9d9043f6a81713248d82d88983c06b1eaedda287.zip | |
xtensa: clean up system_call/xtensa_rt_sigreturn interaction
system_call assembly code always pushes pointer to struct pt_regs as the
last additional parameter for all system calls. The only user of this
feature is xtensa_rt_sigreturn.
Avoid this special case. Define xtensa_rt_sigreturn as accepting no
argiments. Use current_pt_regs to get pointer to struct pt_regs in
xtensa_rt_sigreturn. Don't pass additional parameter from system_call
code.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Diffstat (limited to 'arch/xtensa/kernel/signal.c')
| -rw-r--r-- | arch/xtensa/kernel/signal.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/xtensa/kernel/signal.c b/arch/xtensa/kernel/signal.c index dae83cddd6ca..76cee341507b 100644 --- a/arch/xtensa/kernel/signal.c +++ b/arch/xtensa/kernel/signal.c @@ -236,9 +236,9 @@ restore_sigcontext(struct pt_regs *regs, struct rt_sigframe __user *frame) * Do a signal return; undo the signal stack. */ -asmlinkage long xtensa_rt_sigreturn(long a0, long a1, long a2, long a3, - long a4, long a5, struct pt_regs *regs) +asmlinkage long xtensa_rt_sigreturn(void) { + struct pt_regs *regs = current_pt_regs(); struct rt_sigframe __user *frame; sigset_t set; int ret; |