Patch "drm/rockchip: dw-mipi-dsi: fix possible un-balanced runtime PM enable" has been added to the 4.14-stable tree

[<gregkh@linuxfoundation.org>]

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

    drm/rockchip: dw-mipi-dsi: fix possible un-balanced runtime PM enable

to the 4.14-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:
     drm-rockchip-dw-mipi-dsi-fix-possible-un-balanced-runtime-pm-enable.patch
and it can be found in the queue-4.14 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From foo@baz Thu Feb  1 13:45:42 CET 2018
From: Mirza Krak <mirza.krak@endian.se>
Date: Wed, 15 Nov 2017 08:24:46 +0000
Subject: drm/rockchip: dw-mipi-dsi: fix possible un-balanced runtime PM enable

From: Mirza Krak <mirza.krak@endian.se>


[ Upstream commit 517f56839f581618d24f2e67a35738a5c6cbaecb ]

In the case where the bind gets deferred we would end up with a
un-balanced runtime PM enable call.

Fix this by simply moving the pm_runtime_enable call to the end of
the bind function when all paths have succeeded.

Signed-off-by: Mirza Krak <mirza.krak@endian.se>
Signed-off-by: Sandy Huang <hjc@rock-chips.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1510734286-37434-1-git-send-email-mirza.krak@endian.se
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/gpu/drm/rockchip/dw-mipi-dsi.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

--- a/drivers/gpu/drm/rockchip/dw-mipi-dsi.c
+++ b/drivers/gpu/drm/rockchip/dw-mipi-dsi.c
@@ -1275,8 +1275,6 @@ static int dw_mipi_dsi_bind(struct devic
 		goto err_pllref;
 	}
 
-	pm_runtime_enable(dev);
-
 	dsi->dsi_host.ops = &dw_mipi_dsi_host_ops;
 	dsi->dsi_host.dev = dev;
 	ret = mipi_dsi_host_register(&dsi->dsi_host);
@@ -1291,6 +1289,7 @@ static int dw_mipi_dsi_bind(struct devic
 	}
 
 	dev_set_drvdata(dev, dsi);
+	pm_runtime_enable(dev);
 	return 0;
 
 err_mipi_dsi_host:


Patches currently in stable-queue which might be from mirza.krak@endian.se are

queue-4.14/drm-rockchip-dw-mipi-dsi-fix-possible-un-balanced-runtime-pm-enable.patch