From: Jing Xiangfeng jingxiangfeng@huawei.com
[ Upstream commit 85094c05eeb47d195a74a25366a2db066f1c9d47 ]
rio_mport_add_riodev() misses to call put_device() when the device already exists. Add the missed function call to fix it.
Fixes: e8de370188d0 ("rapidio: add mport char device driver") Signed-off-by: Jing Xiangfeng jingxiangfeng@huawei.com Signed-off-by: Andrew Morton akpm@linux-foundation.org Reviewed-by: Dan Carpenter dan.carpenter@oracle.com Cc: Matt Porter mporter@kernel.crashing.org Cc: Alexandre Bounine alex.bou9@gmail.com Cc: Gustavo A. R. Silva gustavoars@kernel.org Cc: John Hubbard jhubbard@nvidia.com Cc: Kees Cook keescook@chromium.org Cc: Madhuparna Bhowmik madhuparnabhowmik10@gmail.com Link: https://lkml.kernel.org/r/20200922072525.42330-1-jingxiangfeng@huawei.com Signed-off-by: Linus Torvalds torvalds@linux-foundation.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/rapidio/devices/rio_mport_cdev.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/rapidio/devices/rio_mport_cdev.c b/drivers/rapidio/devices/rio_mport_cdev.c index 1222522b4ae76..2b08fdeb87c18 100644 --- a/drivers/rapidio/devices/rio_mport_cdev.c +++ b/drivers/rapidio/devices/rio_mport_cdev.c @@ -1683,6 +1683,7 @@ static int rio_mport_add_riodev(struct mport_cdev_priv *priv, struct rio_dev *rdev; struct rio_switch *rswitch = NULL; struct rio_mport *mport; + struct device *dev; size_t size; u32 rval; u32 swpinfo = 0; @@ -1697,8 +1698,10 @@ static int rio_mport_add_riodev(struct mport_cdev_priv *priv, rmcd_debug(RDEV, "name:%s ct:0x%x did:0x%x hc:0x%x", dev_info.name, dev_info.comptag, dev_info.destid, dev_info.hopcount);
- if (bus_find_device_by_name(&rio_bus_type, NULL, dev_info.name)) { + dev = bus_find_device_by_name(&rio_bus_type, NULL, dev_info.name); + if (dev) { rmcd_debug(RDEV, "device %s already exists", dev_info.name); + put_device(dev); return -EEXIST; }