Patch "[media] v4l: omap3isp: Fix sub-device power management code" has been added to the 4.2-stable tree

This is a note to let you know that I've just added the patch titled

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

to the 4.2-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
v4l-omap3isp-fix-sub-device-power-management-code.patch
and it can be found in the queue-4.2 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Sakari Ailus <[email protected]>
Date: Fri, 12 Jun 2015 20:06:23 -0300
Subject: [media] v4l: omap3isp: Fix sub-device power management code

From: Sakari Ailus <[email protected]>

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.

---
 drivers/media/platform/omap3isp/isp.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

@@ -829,14 +829,14 @@ static int isp_pipeline_link_notify(stru
 	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);

Patches currently in stable-queue which might be from [email protected] are

queue-4.2/v4l-omap3isp-fix-sub-device-power-management-code.patch queue-4.2/v4l-omap3isp-fix-async-notifier-registration-order.patch