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mtd: devices: docg3: check the return value of devm_ioremap() in the probe 

The function devm_ioremap() in docg3_probe() can fail, so
its return value should be checked.

Fixes: 82402aeb8c ("mtd: docg3: Use devm_*() functions")
Reported-by: Hacash Robot <hacashRobot@santino.com>
Signed-off-by: William Dean <williamsukatube@gmail.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20220722091644.2937953-1-williamsukatube@163.com
This commit is contained in:
William Dean 2022-07-22 17:16:44 +08:00 committed by Miquel Raynal
parent 002181f5b1
commit 26e784433e
1 changed files with 6 additions and 1 deletions
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7
drivers/mtd/devices/docg3.c
View File

@ -1974,9 +1974,14 @@ static int __init docg3_probe(struct platform_device *pdev)
dev_err(dev, "No I/O memory resource defined\n");
return ret;
}
base = devm_ioremap(dev, ress->start, DOC_IOSPACE_SIZE);
ret = -ENOMEM;
base = devm_ioremap(dev, ress->start, DOC_IOSPACE_SIZE);
if (!base) {
dev_err(dev, "devm_ioremap dev failed\n");
return ret;
}
cascade = devm_kcalloc(dev, DOC_MAX_NBFLOORS, sizeof(*cascade),
GFP_KERNEL);
if (!cascade)