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-rw-r--r--include/linux/mISDNif.h5
1 files changed, 4 insertions, 1 deletions
diff --git a/include/linux/mISDNif.h b/include/linux/mISDNif.h
index 557477ac3d5..5da3d95b27f 100644
--- a/include/linux/mISDNif.h
+++ b/include/linux/mISDNif.h
@@ -559,7 +559,10 @@ extern void mISDN_unregister_clock(struct mISDNclock *);
static inline struct mISDNdevice *dev_to_mISDN(struct device *dev)
{
- return dev_get_drvdata(dev);
+ if (dev)
+ return dev_get_drvdata(dev);
+ else
+ return NULL;
}
extern void set_channel_address(struct mISDNchannel *, u_int, u_int);