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| author | Cai Xinchen <caixinchen1@huawei.com> | 2022-12-03 08:57:21 +0000 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2022-12-11 19:30:20 -0800 |
| commit | d5b6e6eba3af11cb2a2791fa36a2524990fcde1a (patch) | |
| tree | fe0f0ed42c83dce7d7f238a1c0a3d372a79ff6ae /drivers/rapidio | |
| parent | 204c2f535d05d52bd7334629557087f9983e6879 (diff) | |
| download | linux-d5b6e6eba3af11cb2a2791fa36a2524990fcde1a.tar.gz linux-d5b6e6eba3af11cb2a2791fa36a2524990fcde1a.tar.bz2 linux-d5b6e6eba3af11cb2a2791fa36a2524990fcde1a.zip | |
rapidio: devices: fix missing put_device in mport_cdev_open
When kfifo_alloc fails, the refcount of chdev->dev is left incremental.
We should use put_device(&chdev->dev) to decrease the ref count of
chdev->dev to avoid refcount leak.
Link: https://lkml.kernel.org/r/20221203085721.13146-1-caixinchen1@huawei.com
Fixes: e8de370188d0 ("rapidio: add mport char device driver")
Signed-off-by: Cai Xinchen <caixinchen1@huawei.com>
Cc: Alexandre Bounine <alex.bou9@gmail.com>
Cc: Dan Carpenter <error27@gmail.com>
Cc: Jakob Koschel <jakobkoschel@gmail.com>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Matt Porter <mporter@kernel.crashing.org>
Cc: Wang Weiyang <wangweiyang2@huawei.com>
Cc: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'drivers/rapidio')
| -rw-r--r-- | drivers/rapidio/devices/rio_mport_cdev.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/rapidio/devices/rio_mport_cdev.c b/drivers/rapidio/devices/rio_mport_cdev.c index fecf523f36d8..43db495f1986 100644 --- a/drivers/rapidio/devices/rio_mport_cdev.c +++ b/drivers/rapidio/devices/rio_mport_cdev.c @@ -1912,6 +1912,7 @@ static int mport_cdev_open(struct inode *inode, struct file *filp) sizeof(struct rio_event) * MPORT_EVENT_DEPTH, GFP_KERNEL); if (ret < 0) { + put_device(&chdev->dev); dev_err(&chdev->dev, DRV_NAME ": kfifo_alloc failed\n"); ret = -ENOMEM; goto err_fifo; |