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Message-ID: <1367831012.3547.2.camel@phoenix>
Date:	Mon, 06 May 2013 17:03:32 +0800
From:	Axel Lin <axel.lin@...ics.com>
To:	Simon Horman <horms+renesas@...ge.net.au>
Cc:	Magnus Damm <damm@...nsource.se>,
	Guennadi Liakhovetski <g.liakhovetski@....de>,
	Thomas Gleixner <tglx@...utronix.de>,
	linux-kernel@...r.kernel.org
Subject: [PATCH] irqchip: renesas-irqc: Fix irqc_probe error handling

The code in goto err3 path is wrong because it will call fee_irq() with k == 0,
which means it does free_irq(p->irq[-1].requested_irq, &p->irq[-1]);

Signed-off-by: Axel Lin <axel.lin@...ics.com>
---
 drivers/irqchip/irq-renesas-irqc.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/irqchip/irq-renesas-irqc.c b/drivers/irqchip/irq-renesas-irqc.c
index 649cd69..3651f77 100644
--- a/drivers/irqchip/irq-renesas-irqc.c
+++ b/drivers/irqchip/irq-renesas-irqc.c
@@ -252,8 +252,8 @@ static int irqc_probe(struct platform_device *pdev)
 
 	return 0;
 err3:
-	for (; k >= 0; k--)
-		free_irq(p->irq[k - 1].requested_irq, &p->irq[k - 1]);
+	while (--k >= 0)
+		free_irq(p->irq[k].requested_irq, &p->irq[k]);
 
 	irq_domain_remove(p->irq_domain);
 err2:
-- 
1.8.1.2



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