From: Li Zhong <zhong@linux.vnet.ibm.com>
Date: Sun, 2 Dec 2012 20:19:22 +0000 (+0000)
Subject: powerpc: Fix MAX_STACK_TRACE_ENTRIES too low warning for ppc32
X-Git-Tag: firefly_0821_release~3680^2~1053^2~82
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=e253ebab935693cc2eafbc93e94b68b47dc779db;p=firefly-linux-kernel-4.4.55.git

powerpc: Fix MAX_STACK_TRACE_ENTRIES too low warning for ppc32

This patch fixes MAX_STACK_TRACE_ENTRIES too low warning for ppc32,
which is similar to commit 12660b17.

Reported-by: Christian Kujau <lists@nerdbynature.de>
Signed-off-by: Li Zhong <zhong@linux.vnet.ibm.com>
Tested-by: Christian Kujau <lists@nerdbynature.de>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---

diff --git a/arch/powerpc/kernel/entry_32.S b/arch/powerpc/kernel/entry_32.S
index d22e73e4618b..e514de57a125 100644
--- a/arch/powerpc/kernel/entry_32.S
+++ b/arch/powerpc/kernel/entry_32.S
@@ -439,6 +439,8 @@ ret_from_fork:
 ret_from_kernel_thread:
 	REST_NVGPRS(r1)
 	bl	schedule_tail
+	li	r3,0
+	stw	r3,0(r1)
 	mtlr	r14
 	mr	r3,r15
 	PPC440EP_ERR42