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,