tree 075fc3a419f3b432e87ba339bbfca5529a9d37d8
parent 8dedab2903f152aa3cee9ae3d57c828dea0d356e
author Dave Stevenson <dave.stevenson@raspberrypi.org> 1561810398 +0200
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1561964946 +0200

staging: bcm2835-camera: Do not bulk receive from service thread

vchi_bulk_queue_receive will queue up to a default of 4
bulk receives on a connection before blocking.
If called from the VCHI service_callback thread, then
that thread is unable to service the VCHI_CALLBACK_BULK_RECEIVED
events that would enable the queue call to succeed.

Add a workqueue to schedule the call vchi_bulk_queue_receive
in an alternate context to avoid the lock up.

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
Signed-off-by: Stefan Wahren <wahrenst@gmx.net>
Acked-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Acked-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>