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

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
......@@ -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,
......
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