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Commit 6e2980cc authored by Kefeng Wang's avatar Kefeng Wang Committed by Mauro Carvalho Chehab
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media: pvrusb2: fix null-ptr-deref in class_unregister() 



The class_ptr will be NULL if pvr2_sysfs_class_create() fails
in pvr_init(), when call pvr2_sysfs_class_destroy(), it will
lead to null-ptr-deref, fix it.

Reported-by: default avatarHulk Robot <hulkci@huawei.com>
Signed-off-by: default avatarKefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: default avatarHans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab+samsung@kernel.org>
parent 7aac9849

drivers/media/usb/pvrusb2/pvrusb2-sysfs.c

+2 −1
Original line number Diff line number Diff line
@@ -802,6 +802,7 @@ struct pvr2_sysfs_class *pvr2_sysfs_class_create(void) 
void pvr2_sysfs_class_destroy(struct pvr2_sysfs_class *clp)

{

	pvr2_sysfs_trace("Unregistering pvr2_sysfs_class id=%p", clp);

	if (clp)

		class_unregister(&clp->class);

}