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Commit 8477cedb authored by Lars-Peter Clausen's avatar Lars-Peter Clausen Committed by Anton Vorontsov
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jz4740-battery: Check if platform_data is supplied 



Currently platform_data is dereferenced without checking whether it
is actually set, which can lead to kernel crashes.
This patch adds a check which will abort the drivers probe function
gracefully if no platform_data is supplied.

Signed-off-by: default avatarLars-Peter Clausen <lars@metafoo.de>
Signed-off-by: default avatarAnton Vorontsov <cbouatmailru@gmail.com>
parent e1a85694

drivers/power/jz4740-battery.c

+5 −0
Original line number Diff line number Diff line
@@ -246,6 +246,11 @@ static int __devinit jz_battery_probe(struct platform_device *pdev) 
	struct jz_battery *jz_battery;

	struct power_supply *battery;



	if (!pdata) {

		dev_err(&pdev->dev, "No platform_data supplied\n");

		return -ENXIO;

	}



	jz_battery = kzalloc(sizeof(*jz_battery), GFP_KERNEL);

	if (!jz_battery) {

		dev_err(&pdev->dev, "Failed to allocate driver structure\n");