From a78fcc11264b824d9651b55abfeedd16d5cd8415 Mon Sep 17 00:00:00 2001 From: Guennadi Liakhovetski Date: Thu, 4 Apr 2013 13:19:58 -0300 Subject: [PATCH] [media] soc-camera: make .clock_{start,stop} compulsory, .add / .remove optional All existing soc-camera host drivers use .clock_start() and .clock_stop() callbacks to activate and deactivate their camera interfaces, whereas .add() and .remove() callbacks are usually dummy. Make the former two compulsory and the latter two optional. Signed-off-by: Guennadi Liakhovetski Acked-by: Hans Verkuil Acked-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab --- .../media/platform/soc_camera/soc_camera.c | 27 +++++++++---------- 1 file changed, 13 insertions(+), 14 deletions(-) diff --git a/drivers/media/platform/soc_camera/soc_camera.c b/drivers/media/platform/soc_camera/soc_camera.c index 3cc086036070..24393a14aaf6 100644 --- a/drivers/media/platform/soc_camera/soc_camera.c +++ b/drivers/media/platform/soc_camera/soc_camera.c @@ -512,23 +512,22 @@ static int soc_camera_add_device(struct soc_camera_device *icd) if (ici->icd) return -EBUSY; - if (ici->ops->clock_start) { - ret = ici->ops->clock_start(ici); + ret = ici->ops->clock_start(ici); + if (ret < 0) + return ret; + + if (ici->ops->add) { + ret = ici->ops->add(icd); if (ret < 0) - return ret; + goto eadd; } - ret = ici->ops->add(icd); - if (ret < 0) - goto eadd; - ici->icd = icd; return 0; eadd: - if (ici->ops->clock_stop) - ici->ops->clock_stop(ici); + ici->ops->clock_stop(ici); return ret; } @@ -539,9 +538,9 @@ static void soc_camera_remove_device(struct soc_camera_device *icd) if (WARN_ON(icd != ici->icd)) return; - ici->ops->remove(icd); - if (ici->ops->clock_stop) - ici->ops->clock_stop(ici); + if (ici->ops->remove) + ici->ops->remove(icd); + ici->ops->clock_stop(ici); ici->icd = NULL; } @@ -1383,8 +1382,8 @@ int soc_camera_host_register(struct soc_camera_host *ici) ((!ici->ops->init_videobuf || !ici->ops->reqbufs) && !ici->ops->init_videobuf2) || - !ici->ops->add || - !ici->ops->remove || + !ici->ops->clock_start || + !ici->ops->clock_stop || !ici->ops->poll || !ici->v4l2_dev.dev) return -EINVAL; -- 2.30.2