This small patch series comes from a mild annoyance I experienced during a recent patch review, where I wanted to ask for a pointer to a v4l2_subdev_state used to access the state in a read-only fashion to be made const. This wasn't possible as the state accessors functions take a non-const state pointer, in order to return pointers to mutable formats and selection rectangles. Patch 1/3 first fixes a small documentation mistake. Patch 2/3 improves the state accessors to support const states, in the same wait as the recently introduced container_of_const() macro. The internal macro name has been subject to a bit of bikeshedding already, so I think we're reaching a final version. Patch 3/3 then shows how this can be used in one driver. Compared to v3, patch 1/3 is new, and patch 2/3 renames the new macro and updates documentation. Laurent Pinchart (3): media: v4l2-subdev: Fix v4l2_subdev_state_get_format() documentation media: v4l2-subdev: Provide const-aware subdev state accessors media: rkisp1: Mark subdev state pointers as const .../platform/rockchip/rkisp1/rkisp1-isp.c | 8 +-- .../platform/rockchip/rkisp1/rkisp1-resizer.c | 8 +-- include/media/v4l2-subdev.h | 50 +++++++++++++------ 3 files changed, 42 insertions(+), 24 deletions(-) base-commit: e695668af8523b059127dfa8b261c76e7c9cde10 -- Regards, Laurent Pinchart
