alpha: don't pass useless arguments to do_{,rt_},sigreturn()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/arch/alpha/kernel/signal.c b/arch/alpha/kernel/signal.c
index 32575f8..336393c 100644
--- a/arch/alpha/kernel/signal.c
+++ b/arch/alpha/kernel/signal.c
@@ -160,10 +160,10 @@
#define INSN_CALLSYS 0x00000083
static long
-restore_sigcontext(struct sigcontext __user *sc, struct pt_regs *regs,
- struct switch_stack *sw)
+restore_sigcontext(struct sigcontext __user *sc, struct pt_regs *regs)
{
unsigned long usp;
+ struct switch_stack *sw = (struct switch_stack *)regs - 1;
long i, err = __get_user(regs->pc, &sc->sc_pc);
current_thread_info()->restart_block.fn = do_no_restart_syscall;
@@ -215,9 +215,9 @@
registers and transfer control from userland. */
asmlinkage void
-do_sigreturn(struct sigcontext __user *sc, struct pt_regs *regs,
- struct switch_stack *sw)
+do_sigreturn(struct sigcontext __user *sc)
{
+ struct pt_regs *regs = current_pt_regs();
sigset_t set;
/* Verify that it's a good sigcontext before using it */
@@ -228,7 +228,7 @@
set_current_blocked(&set);
- if (restore_sigcontext(sc, regs, sw))
+ if (restore_sigcontext(sc, regs))
goto give_sigsegv;
/* Send SIGTRAP if we're single-stepping: */
@@ -249,9 +249,9 @@
}
asmlinkage void
-do_rt_sigreturn(struct rt_sigframe __user *frame, struct pt_regs *regs,
- struct switch_stack *sw)
+do_rt_sigreturn(struct rt_sigframe __user *frame)
{
+ struct pt_regs *regs = current_pt_regs();
sigset_t set;
/* Verify that it's a good ucontext_t before using it */
@@ -262,7 +262,7 @@
set_current_blocked(&set);
- if (restore_sigcontext(&frame->uc.uc_mcontext, regs, sw))
+ if (restore_sigcontext(&frame->uc.uc_mcontext, regs))
goto give_sigsegv;
/* Send SIGTRAP if we're single-stepping: */