From: Jayachandran C <jchandra@broadcom.com>
Date: Tue, 29 Apr 2014 14:37:43 +0000 (+0530)
Subject: MIPS: Netlogic: Warn on invalid irq
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=9de10ffb54565b4d427adf1037579617e73cb8bf;p=openwrt%2Fstaging%2Fblogic.git

MIPS: Netlogic: Warn on invalid irq

Warn and return if invalid IRQ is passed to nlm_set_pic_extra_ack.

Signed-off-by: Jayachandran C <jchandra@broadcom.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/6862/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
---

diff --git a/arch/mips/netlogic/common/irq.c b/arch/mips/netlogic/common/irq.c
index 5afc4b7fce0f..c100b9afa0ab 100644
--- a/arch/mips/netlogic/common/irq.c
+++ b/arch/mips/netlogic/common/irq.c
@@ -203,6 +203,8 @@ void nlm_set_pic_extra_ack(int node, int irq, void (*xack)(struct irq_data *))
 
 	xirq = nlm_irq_to_xirq(node, irq);
 	pic_data = irq_get_handler_data(xirq);
+	if (WARN_ON(!pic_data))
+		return;
 	pic_data->extra_ack = xack;
 }