iio: inkern: fix a NULL dereference on error

In twl4030_bci_probe() there are some failure paths where we call iio_channel_release() with a NULL pointer. (Apparently, that driver can opperate without a valid channel pointer). Let's fix it by adding a NULL check in iio_channel_release(). Fixes: 2202e1f ('drivers: power: twl4030_charger: fix link problems when building as module') Signed-off-by: Dan Carpenter <[email protected]> Cc: <[email protected]> Signed-off-by: Jonathan Cameron <[email protected]>
kawasaki · Jan 30, 2016 · d81dac3 · d81dac3
1 parent 9d0be85
commit d81dac3
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/drivers/iio/inkern.c b/drivers/iio/inkern.c
@@ -351,6 +351,8 @@ EXPORT_SYMBOL_GPL(iio_channel_get);
 
 void iio_channel_release(struct iio_channel *channel)
 {
+	if (!channel)
+		return;
 	iio_device_put(channel->indio_dev);
 	kfree(channel);
 }