Hi, "Ardelean, Alexandru" writes: > On Tue, 2019-11-12 at 15:41 +0100, Michael Olbrich wrote: >> [External] >> >> On Wed, Nov 06, 2019 at 04:45:53PM +0200, Alexandru Ardelean wrote: >> > From: Lars-Peter Clausen >> > >> > Trying to dequeue and URB that is currently not queued should be a no- >> > op >> > and be handled gracefully. >> > >> > Use the list field of the URB to indicate whether it is queued or not >> > by >> > setting it to the empty list when it is not queued. >> > >> > Handling this gracefully allows for race condition free synchronization >> > between the complete callback being called to to a completed transfer >> > and >> > trying to call usb_ep_dequeue() at the same time. >> > >> > Signed-off-by: Lars-Peter Clausen >> > Signed-off-by: Alexandru Ardelean >> >> Thanks, no more "dwc3 fe200000.usb: request 00000000cdd42e4a was not >> queued >> to ep2in" messages with this patch applied. >> >> Tested-by: Michael Olbrich >> > > I thought I replied here, but I guess I never hit the Send button. > Many thanks @Michael for testing this. > > I'd also use the opportunity to make this a patch-ping message. https://lore.kernel.org/linux-usb/875zhd6pw0.fsf@kernel.org/T/#u -- balbi