media: rz2gl-cru: Return pending buffers in order

Buffers are programmed into slots in queueing order.

When returning pending buffers we can't simply start from the first slot
but we should actually iterate slots starting from the one is use. The
rzg3e_cru_irq() handler already uses 'active_slot', make rzg2l_cru_irq()
use it as well to know where to start iterating from.

As the pattern of iterating over slots in order will be used for slots
programming in the next patches, provide an helper macro to do that.

While at it, rename return_unused_buffers() to rzg2l_cru_return_buffers().

Signed-off-by: Jacopo Mondi <jacopo.mondi+renesas@ideasonboard.com>
Tested-by: Tommaso Merciai <tommaso.merciai.xr@bp.renesas.com>
Reviewed-by: Daniel Scally <dan.scally@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>

0 files changed, 0 insertions, 0 deletions