Messages in this thread | | | Date | Wed, 22 Nov 2023 17:01:32 +0900 | From | Sergey Senozhatsky <> | Subject | Re: [PATCH v3 2/3] media: uvcvideo: Do not halt the device after disconnect |
| |
On (23/11/22 16:47), Sergey Senozhatsky wrote: > Can the following happen?
Consider the following case (when CPU1 experienced a delay, a preemption or anything):
> CPU0 CPU1 > uvc_disconnect() > uvc_video_stop_streaming() > usb_set_intfdata() > uvc_unregister_video() > > if (!smp_load(&dev->disconnected)) > > smp_store_release(&dev->disconnected, true); > > kref_put(&dev->ref, uvc_delete);
> uvc_video_halt()
That uvc_video_halt() cannot be legal, right?
| |