From: Jing Xiangfeng <jingxiangfeng@xxxxxxxxxx>
[ 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@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Reviewed-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Cc: Matt Porter <mporter@xxxxxxxxxxxxxxxxxxx>
Cc: Alexandre Bounine <alex.bou9@xxxxxxxxx>
Cc: Gustavo A. R. Silva <gustavoars@xxxxxxxxxx>
Cc: John Hubbard <jhubbard@xxxxxxxxxx>
Cc: Kees Cook <keescook@xxxxxxxxxxxx>
Cc: Madhuparna Bhowmik <madhuparnabhowmik10@xxxxxxxxx>
Link: https://lkml.kernel.org/r/20200922072525.42330-1-jingxiangfeng@xxxxxxxxxx
Signed-off-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
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 21d0dd1617e27..c246d3a2fc5f6 100644
--- a/drivers/rapidio/devices/rio_mport_cdev.c
+++ b/drivers/rapidio/devices/rio_mport_cdev.c
@@ -1740,6 +1740,7 @@ 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;
@@ -1754,8 +1755,10 @@ 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;
}
--
2.25.1
