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media: pvrusb2: Fix USB parent device leak in class_dev_create()

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class_dev_create() stores a reference to the USB device obtained with
get_device() in class_dev->parent, which class_dev_destroy() releases.
When device_register() fails the function only drops class_dev, so the
reference to the USB parent device is never released.

Drop the parent reference on the failure path as well.

Fixes: 28c4a5e6d3 ("V4L/DVB: pvrusb2: Fix USB parent device reference count")
Cc: stable@vger.kernel.org
Signed-off-by: Wentao Liang <vulab@iscas.ac.cn>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
This commit is contained in:
Wentao Liang 2026-09-17 10:09:24 +00:00 committed by Hans Verkuil
parent ce6c6dd632
commit 02421d7278
1 changed files with 1 additions and 0 deletions
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1
drivers/media/usb/pvrusb2/pvrusb2-sysfs.c
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@ -633,6 +633,7 @@ static void class_dev_create(struct pvr2_sysfs *sfp)
if (ret) {
pvr2_trace(PVR2_TRACE_ERROR_LEGS,
"device_register failed");
put_device(class_dev->parent);
put_device(class_dev);
return;
}