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HID: input: Fix NULL pointer dereference when power_supply_register fails

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Do not call power_supply_powers() if power_supply_register() failed
earlier. This fixes possible NULL pointer dereference by
power_supply_powers() in such case.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
This commit is contained in:
Krzysztof Kozlowski 2015-03-23 16:34:51 +01:00 committed by Sebastian Reichel
parent 8fb0885504
commit fbea947c7d
1 changed files with 2 additions and 2 deletions
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4
drivers/hid/hid-input.c
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@ -452,10 +452,10 @@ static bool hidinput_setup_battery(struct hid_device *dev, unsigned report_type,
kfree(psy_desc->name);
kfree(psy_desc);
dev->battery = NULL;
} else {
power_supply_powers(dev->battery, &dev->dev);
}
power_supply_powers(dev->battery, &dev->dev);
out:
return true;
}