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mtd: onenand: Check for error irq

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[ Upstream commit 3e68f331c8c759c0daa31cc92c3449b23119a215 ]

For the possible failure of the platform_get_irq(), the returned irq
could be error number and will finally cause the failure of the
request_irq().
Consider that platform_get_irq() can now in certain cases return
-EPROBE_DEFER, and the consequences of letting request_irq() effectively
convert that into -EINVAL, even at probe time rather than later on.
So it might be better to check just now.

Fixes: 2c22120fbd01 ("MTD: OneNAND: interrupt based wait support")
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20220104162658.1988142-1-jiasheng@iscas.ac.cn
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Jiasheng Jiang 2022-01-05 00:26:58 +08:00 committed by Greg Kroah-Hartman
parent 9674267ad6
commit a94ef82db4
1 changed files with 6 additions and 1 deletions
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7
drivers/mtd/onenand/generic.c
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@ -58,7 +58,12 @@ static int generic_onenand_probe(struct platform_device *pdev)
}
info->onenand.mmcontrol = pdata ? pdata->mmcontrol : NULL;
info->onenand.irq = platform_get_irq(pdev, 0);
err = platform_get_irq(pdev, 0);
if (err < 0)
goto out_iounmap;
info->onenand.irq = err;
info->mtd.dev.parent = &pdev->dev;
info->mtd.priv = &info->onenand;