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authorDan Carpenter <dan.carpenter@oracle.com>2016-01-26 12:25:21 +0300
committerJonathan Cameron <jic23@kernel.org>2016-01-30 15:37:40 +0000
commitd81dac3c1c5295c61b15293074ac2bd3254e1875 (patch)
tree21f654c5a0723ec04d2db947c299e4f426dcd138 /drivers/iio/inkern.c
parent9d0be85d4e2cfa2519ae16efe7ff4a7150c43c0b (diff)
downloadlinux-d81dac3c1c5295c61b15293074ac2bd3254e1875.tar.bz2
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: 2202e1fc5a29 ('drivers: power: twl4030_charger: fix link problems when building as module') Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Diffstat (limited to 'drivers/iio/inkern.c')
-rw-r--r--drivers/iio/inkern.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/iio/inkern.c b/drivers/iio/inkern.c
index c8bad3cf891d..217e9306aa0f 100644
--- 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);
}