diff options
| -rw-r--r-- | drivers/mfd/ab8500-core.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/mfd/ab8500-core.c b/drivers/mfd/ab8500-core.c index d9640a623ff4..e91b5b759004 100644 --- a/drivers/mfd/ab8500-core.c +++ b/drivers/mfd/ab8500-core.c @@ -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, |