mbox series

[0/2] media: mc: Simplify media pipeline start/stop

Message ID 20220113150042.15630-1-laurent.pinchart+renesas@ideasonboard.com
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Series media: mc: Simplify media pipeline start/stop | expand

Message

Laurent Pinchart Jan. 13, 2022, 3 p.m. UTC 
Hello,

This small series simplifies the implementation of the
media_pipeline_start() function (and to a lesser extend, the
media_pipeline_stop() function as well) by avoiding unnecessary graph
walks.

Patch 1/2 adds a small inline helper function to avoid direct access to
the media_entity.stream_count field in drivers, making it easier in
patch 2/2 to rework the implementation (dropping the stream_count field)
without disturbing drivers. Please see patch 2/2 for a detailed
explanation of the simplification.

Laurent Pinchart (2):
  media: media-entity: Add media_pad_is_streaming() helper function
  media: media-entity: Simplify media_pipeline_start()

 drivers/media/mc/mc-entity.c                  | 55 ++++++++-----------
 drivers/media/platform/exynos4-is/common.c    |  5 +-
 drivers/media/platform/exynos4-is/fimc-isp.c  |  2 +-
 drivers/media/platform/exynos4-is/fimc-lite.c |  6 +-
 drivers/media/platform/rcar-vin/rcar-core.c   |  2 +-
 include/media/media-entity.h                  | 21 +++++--
 6 files changed, 48 insertions(+), 43 deletions(-)


base-commit: 68b9bcc8a534cd11fe55f8bc82f948aae7d81b3c