From: Maxim Uvarov <muvarov@gmail.com>
Date: Tue, 11 May 2010 05:41:08 +0000 (+0000)
Subject: powerpc/crashdump: Do not fail on NULL pointer dereferencing
X-Git-Tag: MMI-PSA29.97-13-9~23850^2~14
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=426b6cb478e60352a463a0d1ec75c1c9fab30b13;p=GitHub%2FMotorolaMobilityLLC%2Fkernel-slsi.git

powerpc/crashdump: Do not fail on NULL pointer dereferencing

Signed-off-by: Maxim Uvarov <muvarov@gmail.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---

diff --git a/arch/powerpc/kernel/crash.c b/arch/powerpc/kernel/crash.c
index 6f4613dd05ef..341d8af6f33e 100644
--- a/arch/powerpc/kernel/crash.c
+++ b/arch/powerpc/kernel/crash.c
@@ -375,6 +375,9 @@ void default_machine_crash_shutdown(struct pt_regs *regs)
 	for_each_irq(i) {
 		struct irq_desc *desc = irq_to_desc(i);
 
+		if (!desc || !desc->chip || !desc->chip->eoi)
+			continue;
+
 		if (desc->status & IRQ_INPROGRESS)
 			desc->chip->eoi(i);