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power: supply: isp1704: Fix unchecked return value of devm_kzalloc

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Function devm_kzalloc() will return a NULL pointer. However, in function
isp1704_charger_probe(), the return value of devm_kzalloc() is directly
used without validation. This may result in a bad memory access bug.

Fixes: 34a109610e ("isp1704_charger: Add DT support")
Signed-off-by: Pan Bian <[email protected]>
Reviewed-by: Pali Rohár <[email protected]>
Signed-off-by: Sebastian Reichel <[email protected]>
This commit is contained in:
Pan Bian 2017-04-24 16:22:08 +08:00 • committed by Sebastian Reichel
commit 8b20839988
1 changed files with 4 additions and 0 deletions
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4
drivers/power/supply/isp1704_charger.c
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@ -418,6 +418,10 @@ static int isp1704_charger_probe(struct platform_device *pdev)
pdata = devm_kzalloc(&pdev->dev,
sizeof(struct isp1704_charger_data), GFP_KERNEL);
if (!pdata) {
ret = -ENOMEM;
goto fail0;
}
pdata->enable_gpio = gpio;
dev_info(&pdev->dev, "init gpio %d\n", pdata->enable_gpio);