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irqchip: mtk-sysirq: Make mtk_sysirq_of_init return error if ioremap fails

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

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com>
Cc: Yingjoe Chen <yingjoe.chen@mediatek.com>
Cc: linux-mediatek@lists.infradead.org <linux-mediatek@lists.infradead.org>
Cc: Jason Cooper <jason@lakedaemon.net>
Link: http://lkml.kernel.org/r/1432220254.29544.1.camel@ingics.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Axel Lin 2015-05-21 22:57:34 +08:00 committed by Thomas Gleixner
parent a6c761e44c
commit e1a96fb861
1 changed files with 1 additions and 1 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

2
drivers/irqchip/irq-mtk-sysirq.c
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@ -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;
}