If we fail to queue the buffer then it can never be dequeued. This can
lead to a forever loop in stop_streaming() when we wait for everything
to finish.
Fixes:
70ec64ccdaac ("staging: bcm2835-camera: Ensure all buffers are returned on disable")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/20200722130651.GC220681@mwanda
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
ret = vchiq_queue_kernel_message(instance->service_handle, &m,
sizeof(struct mmal_msg_header) +
sizeof(m.u.buffer_from_host));
+ if (ret)
+ atomic_dec(&port->buffers_with_vpu);
vchiq_release_service(instance->service_handle);