[media] v4l: omap3isp: Fix sub-device power management code

Commit 813f5c0ac5cc ("media: Change media device link_notify behaviour")
modified the media controller link setup notification API and updated the
OMAP3 ISP driver accordingly. As a side effect it introduced a bug by
turning power on after setting the link instead of before. This results in
sub-devices not being powered down in some cases when they should be. Fix
it.

Fixes: 813f5c0ac5cc [media] media: Change media device link_notify behaviour

Signed-off-by: Sakari Ailus <sakari.ailus@iki.fi>
Cc: stable@vger.kernel.org # since v3.10
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

diff --git a/drivers/media/platform/omap3isp/isp.c b/drivers/media/platform/omap3isp/isp.c
index d1334bb..12be830 100644 (file)
--- a/drivers/media/platform/omap3isp/isp.c
+++ b/drivers/media/platform/omap3isp/isp.c
@@ -829,14 +829,14 @@ static int isp_pipeline_link_notify(struct media_link *link, u32 flags,
        int ret;
 
        if (notification == MEDIA_DEV_NOTIFY_POST_LINK_CH &&
-           !(link->flags & MEDIA_LNK_FL_ENABLED)) {
+           !(flags & MEDIA_LNK_FL_ENABLED)) {
                /* Powering off entities is assumed to never fail. */
                isp_pipeline_pm_power(source, -sink_use);
                isp_pipeline_pm_power(sink, -source_use);
                return 0;
        }
 
-       if (notification == MEDIA_DEV_NOTIFY_POST_LINK_CH &&
+       if (notification == MEDIA_DEV_NOTIFY_PRE_LINK_CH &&
                (flags & MEDIA_LNK_FL_ENABLED)) {
 
                ret = isp_pipeline_pm_power(source, sink_use);