Thread (840 messages) 840 messages, 15 authors, 2021-07-20
STALE1809d

[PATCH 5.13 186/800] media: siano: fix device register error path

From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date: 2021-07-12 08:25:22
Also in: lkml
Subsystem: media input infrastructure (v4l/dvb), siano dvb driver, the rest · Maintainers: Mauro Carvalho Chehab, Linus Torvalds

From: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

[ Upstream commit 5368b1ee2939961a16e74972b69088433fc52195 ]

As reported by smatch:
	drivers/media/common/siano/smsdvb-main.c:1231 smsdvb_hotplug() warn: '&client->entry' not removed from list

If an error occur at the end of the registration logic, it won't
drop the device from the list.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/media/common/siano/smsdvb-main.c | 4 ++++
 1 file changed, 4 insertions(+)
diff --git a/drivers/media/common/siano/smsdvb-main.c b/drivers/media/common/siano/smsdvb-main.c
index cd5bafe9a3ac..7e4100263381 100644
--- a/drivers/media/common/siano/smsdvb-main.c
+++ b/drivers/media/common/siano/smsdvb-main.c
@@ -1212,6 +1212,10 @@ static int smsdvb_hotplug(struct smscore_device_t *coredev,
 	return 0;
 
 media_graph_error:
+	mutex_lock(&g_smsdvb_clientslock);
+	list_del(&client->entry);
+	mutex_unlock(&g_smsdvb_clientslock);
+
 	smsdvb_debugfs_release(client);
 
 client_error:
-- 
2.30.2


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