Hi Guennadi, On Thursday 25 August 2011 18:46:03 Guennadi Liakhovetski wrote: > Prepare the mx3_camera friver to support the new VIDIOC_CREATE_BUFS and > VIDIOC_PREPARE_BUF ioctl()s. The .queue_setup() vb2 operation must be > able to handle buffer sizes, provided by the caller, and the > .buf_prepare() operation must not use the currently configured frame > format for its operation, which makes it superfluous for this driver. > Its functionality is moved into .buf_queue(). You're moving the ichan->dma_chan.device->device_prep_slave_sg() call from .buf_prepare() to .buf_queue(). Is that call cheap ? Otherwise it would be better to keep the .buf_prepare() callback. -- Regards, Laurent Pinchart -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html