diff options
| author | Colin Ian King <colin.king@canonical.com> | 2019-02-02 22:34:49 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-01-27 14:46:16 +0100 |
| commit | 526eb7a254e9ffabfe567438dc091ad5ebb5c7ee (patch) | |
| tree | f6655901d33cee66a5c1eb6206b8ab1e9d5a6157 /drivers/staging | |
| parent | 5cd9f229dd3e4980580406f5a47230ec5ee836d7 (diff) | |
staging: most: cdev: add missing check for cdev_add failure
[ Upstream commit 5ae890780e1b4d08f2c0c5d4ea96fc3928fc0ee9 ]
Currently the call to cdev_add is missing a check for failure. Fix this by
checking for failure and exiting via a new error path that ensures the
allocated comp_channel struct is kfree'd.
Detected by CoverityScan, CID#1462359 ("Unchecked return value")
Fixes: 9bc79bbcd0c5 ("Staging: most: add MOST driver's aim-cdev module")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/staging')
| -rw-r--r-- | drivers/staging/most/aim-cdev/cdev.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/staging/most/aim-cdev/cdev.c b/drivers/staging/most/aim-cdev/cdev.c index 1e5cbc893496..d000b6ff8a7d 100644 --- a/drivers/staging/most/aim-cdev/cdev.c +++ b/drivers/staging/most/aim-cdev/cdev.c @@ -455,7 +455,9 @@ static int aim_probe(struct most_interface *iface, int channel_id, c->devno = MKDEV(major, current_minor); cdev_init(&c->cdev, &channel_fops); c->cdev.owner = THIS_MODULE; - cdev_add(&c->cdev, c->devno, 1); + retval = cdev_add(&c->cdev, c->devno, 1); + if (retval < 0) + goto err_free_c; c->iface = iface; c->cfg = cfg; c->channel_id = channel_id; @@ -491,6 +493,7 @@ error_create_device: list_del(&c->list); error_alloc_kfifo: cdev_del(&c->cdev); +err_free_c: kfree(c); error_alloc_channel: ida_simple_remove(&minor_id, current_minor); |