From: Ma Ke <make24@iscas.ac.cn>
To: sean@mess.org, mchehab@kernel.org
Cc: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org,
Ma Ke <make24@iscas.ac.cn>,
stable@vger.kernel.org
Subject: [PATCH] media: lirc: Fix error handling in lirc_register()
Date: Sun, 5 Jan 2025 18:01:01 +0800 [thread overview]
Message-ID: <20250105100101.275309-1-make24@iscas.ac.cn> (raw)
When cdev_device_add() failed, calling put_device() to explicitly
release dev->lirc_dev. Otherwise, it could cause the fault of the
reference count.
Found by code review.
Cc: stable@vger.kernel.org
Fixes: a6ddd4fecbb0 ("media: lirc: remove last remnants of lirc kapi")
Signed-off-by: Ma Ke <make24@iscas.ac.cn>
---
drivers/media/rc/lirc_dev.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/media/rc/lirc_dev.c b/drivers/media/rc/lirc_dev.c
index a2257dc2f25d..ed839e15fa16 100644
--- a/drivers/media/rc/lirc_dev.c
+++ b/drivers/media/rc/lirc_dev.c
@@ -765,6 +765,7 @@ int lirc_register(struct rc_dev *dev)
return 0;
out_ida:
+ put_device(&dev->lirc_dev);
ida_free(&lirc_ida, minor);
return err;
}
--
2.25.1
next reply other threads:[~2025-01-05 10:06 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-01-05 10:01 Ma Ke [this message]
2025-01-06 10:56 ` Sean Young
2025-01-07 1:51 ` Ma Ke
2025-01-07 10:38 ` Sean Young
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