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authorAl Viro <viro@zeniv.linux.org.uk>2012-12-23 02:43:08 -0500
committerAl Viro <viro@zeniv.linux.org.uk>2013-02-03 18:15:57 -0500
commit1e974c21661db89b30eb13040fc9ab99a83b6492 (patch)
treecc8c987b339865ea850ea41c5aa00fa7e5c7d084 /arch/hexagon/kernel
parent0aa0203fb43f04714004b2c4ad33b858e240555d (diff)
downloadvexpress-lsk-1e974c21661db89b30eb13040fc9ab99a83b6492.tar.gz
hexagon: switch to generic sigaltstack
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'arch/hexagon/kernel')
-rw-r--r--arch/hexagon/kernel/signal.c15
1 files changed, 1 insertions, 14 deletions
diff --git a/arch/hexagon/kernel/signal.c b/arch/hexagon/kernel/signal.c
index fe0d1373165..46ebd479466 100644
--- a/arch/hexagon/kernel/signal.c
+++ b/arch/hexagon/kernel/signal.c
@@ -247,12 +247,6 @@ void do_notify_resume(struct pt_regs *regs, unsigned long thread_info_flags)
/*
* Architecture-specific wrappers for signal-related system calls
*/
-asmlinkage int sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss)
-{
- struct pt_regs *regs = current_pt_regs();
-
- return do_sigaltstack(uss, uoss, regs->r29);
-}
asmlinkage int sys_rt_sigreturn(void)
{
@@ -288,14 +282,7 @@ asmlinkage int sys_rt_sigreturn(void)
*/
regs->syscall_nr = __NR_rt_sigreturn;
- /*
- * If we were meticulous, we'd only call this if we knew that
- * we were actually going to use an alternate stack, and we'd
- * consider any error to be fatal. What we do here, in common
- * with many other architectures, is call it blindly and only
- * consider the -EFAULT return case to be proof of a problem.
- */
- if (do_sigaltstack(&frame->uc.uc_stack, NULL, pt_psp(regs)) == -EFAULT)
+ if (restore_altstack(&frame->uc.uc_stack))
goto badframe;
return 0;