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| Started by | Kamal Mostafa <kamal@canonical.com> |
|---|---|
| First post | 2015-10-20 23:40 +0200 |
| Last post | 2015-10-20 23:40 +0200 |
| Articles | 1 — 1 participant |
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[PATCH 3.19.y-ckt 005/156] [media] v4l: omap3isp: Fix sub-device power management code Kamal Mostafa <kamal@canonical.com> - 2015-10-20 23:40 +0200
| From | Kamal Mostafa <kamal@canonical.com> |
|---|---|
| Date | 2015-10-20 23:40 +0200 |
| Subject | [PATCH 3.19.y-ckt 005/156] [media] v4l: omap3isp: Fix sub-device power management code |
| Message-ID | <qlMNt-7E9-61@gated-at.bofh.it> |
3.19.8-ckt8 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Sakari Ailus <sakari.ailus@iki.fi>
commit 9d39f05490115bf145e5ea03c0b7ec9d3d015b01 upstream.
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>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/media/platform/omap3isp/isp.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/media/platform/omap3isp/isp.c b/drivers/media/platform/omap3isp/isp.c
index 51c2129..74ffbe7 100644
--- a/drivers/media/platform/omap3isp/isp.c
+++ b/drivers/media/platform/omap3isp/isp.c
@@ -813,14 +813,14 @@ 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);
--
1.9.1
--
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