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Commit 6bce7bf1 authored by Mattias Wallin's avatar Mattias Wallin Committed by Samuel Ortiz
Browse files

mfd: ab8500-core improved error handling in get_chip_id 



We check for dev before dereferencing it.

Signed-off-by: default avatarMattias Wallin <mattias.wallin@stericsson.com>
Signed-off-by: default avatarSamuel Ortiz <sameo@linux.intel.com>
parent ec9d0cf5

drivers/mfd/ab8500-core.c

+6 −2
Original line number Diff line number Diff line
@@ -103,8 +103,12 @@ static const int ab8500_irq_regoffset[AB8500_NUM_IRQ_REGS] = { 


static int ab8500_get_chip_id(struct device *dev)

{

	struct ab8500 *ab8500 = dev_get_drvdata(dev->parent);

	return (int)ab8500->chip_id;

	struct ab8500 *ab8500;



	if (!dev)

		return -EINVAL;

	ab8500 = dev_get_drvdata(dev->parent);

	return ab8500 ? (int)ab8500->chip_id : -EINVAL;

}



static int set_register_interruptible(struct ab8500 *ab8500, u8 bank,