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-rw-r--r--arch/powerpc/kernel/entry_32.S11
1 files changed, 8 insertions, 3 deletions
diff --git a/arch/powerpc/kernel/entry_32.S b/arch/powerpc/kernel/entry_32.S
index da52269aec1..1cbbf703364 100644
--- a/arch/powerpc/kernel/entry_32.S
+++ b/arch/powerpc/kernel/entry_32.S
@@ -343,7 +343,12 @@ syscall_dotrace:
stw r0,_TRAP(r1)
addi r3,r1,STACK_FRAME_OVERHEAD
bl do_syscall_trace_enter
- lwz r0,GPR0(r1) /* Restore original registers */
+ /*
+ * Restore argument registers possibly just changed.
+ * We use the return value of do_syscall_trace_enter
+ * for call number to look up in the table (r0).
+ */
+ mr r0,r3
lwz r3,GPR3(r1)
lwz r4,GPR4(r1)
lwz r5,GPR5(r1)
@@ -1055,8 +1060,8 @@ do_user_signal: /* r10 contains MSR_KERNEL here */
SAVE_NVGPRS(r1)
rlwinm r3,r3,0,0,30
stw r3,_TRAP(r1)
-2: li r3,0
- addi r4,r1,STACK_FRAME_OVERHEAD
+2: addi r3,r1,STACK_FRAME_OVERHEAD
+ mr r4,r9
bl do_signal
REST_NVGPRS(r1)
b recheck