ARC: stack unwinder to bail if PC is not kernel mode
Currently, it doesn't invoke the callback but continues to unwind
Also while at it - simplify the code a bit
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
diff --git a/arch/arc/kernel/stacktrace.c b/arch/arc/kernel/stacktrace.c
index 92320d6..001de4c 100644
--- a/arch/arc/kernel/stacktrace.c
+++ b/arch/arc/kernel/stacktrace.c
@@ -122,19 +122,17 @@
while (1) {
address = UNW_PC(&frame_info);
- if (address && __kernel_text_address(address)) {
- if (consumer_fn(address, arg) == -1)
- break;
- }
+ if (!address || !__kernel_text_address(address))
+ break;
+
+ if (consumer_fn(address, arg) == -1)
+ break;
ret = arc_unwind(&frame_info);
-
- if (ret == 0) {
- frame_info.regs.r63 = frame_info.regs.r31;
- continue;
- } else {
+ if (ret)
break;
- }
+
+ frame_info.regs.r63 = frame_info.regs.r31;
}
return address; /* return the last address it saw */