Commit 059df04a authored May 01, 2016 by Hemant Kumar

USB: f_mtp: Check if the ep is not disabled before queuing it



Queuing a request on a disabled endpoint during composition switch leads
to prime failure. Hence return -EINVAL if a request is queued on a disabled
endpoint.

Also, in f_mtp, block queuing a request in OUT ep in receive_file_work, if
the device state is STATE_OFFLINE.

Change-Id: I0e706d5280a2460baf6ab05dbf97a09c59b642fb
Signed-off-by: Rajkumar Raghupathy <raghup@codeaurora.org>
Signed-off-by: Hemant Kumar <hemantk@codeaurora.org>

parent 79dead75

drivers/usb/gadget/function/f_mtp.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -939,7 +939,8 @@ static void receive_file_work(struct work_struct *data)
		/* wait for our last read to complete */
		ret = wait_event_interruptible(dev->read_wq,
		dev->rx_done \|\| dev->state != STATE_BUSY);
		if (dev->state == STATE_CANCELED) {
		if (dev->state == STATE_CANCELED
		\|\| dev->state == STATE_OFFLINE) {
		r = -ECANCELED;
		if (!dev->rx_done)
		usb_ep_dequeue(dev->ep_out, read_req);