linux-kernel - [PATCH] irqchip: irq-mtk-sysirq: Make mtk_sysirq_of

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Date:	Thu, 21 May 2015 22:57:34 +0800
From:	Axel Lin <axel.lin@...ics.com>
To:	Thomas Gleixner <tglx@...utronix.de>,
	Jason Cooper <jason@...edaemon.net>
Cc:	Yingjoe Chen <yingjoe.chen@...iatek.com>,
	Matthias Brugger <matthias.bgg@...il.com>,
	linux-kernel@...r.kernel.org,
	"linux-mediatek@...ts.infradead.org" 
	<linux-mediatek@...ts.infradead.org>
Subject: [PATCH] irqchip: irq-mtk-sysirq: Make mtk_sysirq_of_init return
 error if ioremap fails

PTR_ERR(NULL) returns 0 so current code returns 0 if ioremap fails, fix it.

Signed-off-by: Axel Lin <axel.lin@...ics.com>
---
 drivers/irqchip/irq-mtk-sysirq.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/irqchip/irq-mtk-sysirq.c b/drivers/irqchip/irq-mtk-sysirq.c
index 04de2d4..15c1303 100644
--- a/drivers/irqchip/irq-mtk-sysirq.c
+++ b/drivers/irqchip/irq-mtk-sysirq.c
@@ -144,7 +144,7 @@ static int __init mtk_sysirq_of_init(struct device_node *node,
 	chip_data->intpol_base = ioremap(res.start, size);
 	if (!chip_data->intpol_base) {
 		pr_err("mtk_sysirq: unable to map sysirq register\n");
-		ret = PTR_ERR(chip_data->intpol_base);
+		ret = -ENXIO;
 		goto out_free;
 	}
 
-- 
2.1.0



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