!1253 media: saa7134: fix use after free bug in saa7134_finidev due to race condition

Merge Pull Request from: @ci-robot 
 
PR sync from: Longlong Xia <xialonglong1@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/O25ROO7NSR27YAETYTL5DMZW7DV6CNOO/ 
 
 
Link:https://gitee.com/openeuler/kernel/pulls/1253 

Reviewed-by: Jialin Zhang <zhangjialin11@huawei.com> 
Signed-off-by: Jialin Zhang <zhangjialin11@huawei.com> 

drivers/media/pci/saa7134/saa7134-ts.c

@@ -300,6 +300,7 @@ int saa7134_ts_start(struct saa7134_dev *dev)
 
 int saa7134_ts_fini(struct saa7134_dev *dev)
 {
+	del_timer_sync(&dev->ts_q.timeout);
 	saa7134_pgtable_free(dev->pci, &dev->ts_q.pt);
 	return 0;
 }

drivers/media/pci/saa7134/saa7134-vbi.c

@@ -185,6 +185,7 @@ int saa7134_vbi_init1(struct saa7134_dev *dev)
 int saa7134_vbi_fini(struct saa7134_dev *dev)
 {
 	/* nothing */
+	del_timer_sync(&dev->vbi_q.timeout);
 	return 0;
 }
 

drivers/media/pci/saa7134/saa7134-video.c

@@ -2153,6 +2153,7 @@ int saa7134_video_init1(struct saa7134_dev *dev)
 
 void saa7134_video_fini(struct saa7134_dev *dev)
 {
+	del_timer_sync(&dev->video_q.timeout);
 	/* free stuff */
 	saa7134_pgtable_free(dev->pci, &dev->video_q.pt);
 	saa7134_pgtable_free(dev->pci, &dev->vbi_q.pt);