ppc64: Fix delivery of RT signals to 32-bit processes.

An error in merging led to 32-bit processes getting the wrong link
register value on entry to RT signal handlers, and the wrong stack
chain as well.  This fixes it.

Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 1 insertions, 2 deletions

diff --git a/arch/powerpc/kernel/signal_32.c b/arch/powerpc/kernel/signal_32.c
index 1c4eac4c808..92452b2db26 100644
--- a/arch/powerpc/kernel/signal_32.c
+++ b/arch/powerpc/kernel/signal_32.c
@@ -821,7 +821,7 @@ static int handle_rt_signal(unsigned long sig, struct k_sigaction *ka,
                         goto badframe;
                 regs->link = (unsigned long) frame->tramp;
         }
-        if (put_user(regs->gpr[1], (unsigned long __user *)newsp))
+        if (put_user(regs->gpr[1], (u32 __user *)newsp))
                 goto badframe;
         regs->gpr[1] = newsp;
         regs->gpr[3] = sig;
@@ -829,7 +829,6 @@ static int handle_rt_signal(unsigned long sig, struct k_sigaction *ka,
         regs->gpr[5] = (unsigned long) &rt_sf->uc;
         regs->gpr[6] = (unsigned long) rt_sf;
         regs->nip = (unsigned long) ka->sa.sa_handler;
-        regs->link = (unsigned long) frame->tramp;
         regs->trap = 0;
 #ifdef CONFIG_PPC64
         regs->result = 0;