+ rapidio-fix-the-missed-put_device-for-rio_mport_add_riodev.patch added to -mm tree

+ rapidio-fix-the-missed-put_device-for-rio_mport_add_riodev.patch added to -mm tree

[akpm]

The patch titled
     Subject: rapidio: fix the missed put_device() for rio_mport_add_riodev
has been added to the -mm tree.  Its filename is
     rapidio-fix-the-missed-put_device-for-rio_mport_add_riodev.patch

This patch should soon appear at
    https://ozlabs.org/~akpm/mmots/broken-out/rapidio-fix-the-missed-put_device-for-rio_mport_add_riodev.patch
and later at
    https://ozlabs.org/~akpm/mmotm/broken-out/rapidio-fix-the-missed-put_device-for-rio_mport_add_riodev.patch

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------------------------------------------------------
From: Jing Xiangfeng <jingxiangfeng@huawei.com>
Subject: rapidio: fix the missed put_device() for rio_mport_add_riodev

rio_mport_add_riodev() misses to call put_device() when the device already
exists.  Add the missed function call to fix it.

Link: https://lkml.kernel.org/r/20200922072525.42330-1-jingxiangfeng@huawei.com
Fixes: e8de370188d0 ("rapidio: add mport char device driver")
Signed-off-by: Jing Xiangfeng <jingxiangfeng@huawei.com>
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>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 drivers/rapidio/devices/rio_mport_cdev.c |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

--- a/drivers/rapidio/devices/rio_mport_cdev.c~rapidio-fix-the-missed-put_device-for-rio_mport_add_riodev
+++ a/drivers/rapidio/devices/rio_mport_cdev.c
@@ -1680,6 +1680,7 @@ static int rio_mport_add_riodev(struct m
 	struct rio_dev *rdev;
 	struct rio_switch *rswitch = NULL;
 	struct rio_mport *mport;
+	struct device *dev;
 	size_t size;
 	u32 rval;
 	u32 swpinfo = 0;
@@ -1694,8 +1695,10 @@ static int rio_mport_add_riodev(struct m
 	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;
 	}
 
_

Patches currently in -mm which might be from jingxiangfeng@huawei.com are

rapidio-fix-the-missed-put_device-for-rio_mport_add_riodev.patch