diff options
| author | Michael Straube <straube.linux@gmail.com> | 2018-11-25 10:22:25 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-02-12 19:46:00 +0100 |
| commit | 84e4e56c9a385b7a1fa1e683f6525391c2cd00f3 (patch) | |
| tree | 5ea4a61a52e1626928668e3c6418af4c07b07f7f /drivers/staging/pi433 | |
| parent | 23d18c183c58e0c0ed49196f30dfaa4f6155d3b4 (diff) | |
staging: pi433: fix potential null dereference
[ Upstream commit 64c4c4ca6c129a4191e8e1e91b2d5d9b8d08c518 ]
Add a test for successful call to cdev_alloc() to avoid
potential null dereference. Issue reported by smatch.
Signed-off-by: Michael Straube <straube.linux@gmail.com>
Fixes: 874bcba65f9a ("staging: pi433: New driver")
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/staging/pi433')
| -rw-r--r-- | drivers/staging/pi433/pi433_if.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/staging/pi433/pi433_if.c b/drivers/staging/pi433/pi433_if.c index 93c01680f016..5be40bdc191b 100644 --- a/drivers/staging/pi433/pi433_if.c +++ b/drivers/staging/pi433/pi433_if.c @@ -1210,6 +1210,10 @@ static int pi433_probe(struct spi_device *spi) /* create cdev */ device->cdev = cdev_alloc(); + if (!device->cdev) { + dev_dbg(device->dev, "allocation of cdev failed"); + goto cdev_failed; + } device->cdev->owner = THIS_MODULE; cdev_init(device->cdev, &pi433_fops); retval = cdev_add(device->cdev, device->devt, 1); |