Patch "gpu: ipu-v3: Fix imx-ipuv3-crtc module autoloading" has been added to the 4.4-stable tree

Patch "gpu: ipu-v3: Fix imx-ipuv3-crtc module autoloading" has been added to the 4.4-stable tree

[gregkh]

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

    gpu: ipu-v3: Fix imx-ipuv3-crtc module autoloading

to the 4.4-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:
     gpu-ipu-v3-fix-imx-ipuv3-crtc-module-autoloading.patch
and it can be found in the queue-4.4 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 503fe87bd0a8346ba9d8b7f49115dcd0a4185226 Mon Sep 17 00:00:00 2001
From: Philipp Zabel <p.zabel@pengutronix.de>
Date: Wed, 27 Apr 2016 10:17:51 +0200
Subject: gpu: ipu-v3: Fix imx-ipuv3-crtc module autoloading

From: Philipp Zabel <p.zabel@pengutronix.de>

commit 503fe87bd0a8346ba9d8b7f49115dcd0a4185226 upstream.

If of_node is set before calling platform_device_add, the driver core
will try to use of: modalias matching, which fails because the device
tree nodes don't have a compatible property set. This patch fixes
imx-ipuv3-crtc module autoloading by setting the of_node property only
after the platform modalias is set.

Fixes: 304e6be652e2 ("gpu: ipu-v3: Assign of_node of child platform devices to corresponding ports")
Reported-by: Dennis Gilmore <dennis@ausil.us>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Tested-By: Dennis Gilmore <dennis@ausil.us>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/gpu/ipu-v3/ipu-common.c |    7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

--- a/drivers/gpu/ipu-v3/ipu-common.c
+++ b/drivers/gpu/ipu-v3/ipu-common.c
@@ -1068,7 +1068,6 @@ static int ipu_add_client_devices(struct
 			goto err_register;
 		}
 
-		pdev->dev.of_node = of_node;
 		pdev->dev.parent = dev;
 
 		ret = platform_device_add_data(pdev, &reg->pdata,
@@ -1079,6 +1078,12 @@ static int ipu_add_client_devices(struct
 			platform_device_put(pdev);
 			goto err_register;
 		}
+
+		/*
+		 * Set of_node only after calling platform_device_add. Otherwise
+		 * the platform:imx-ipuv3-crtc modalias won't be used.
+		 */
+		pdev->dev.of_node = of_node;
 	}
 
 	return 0;


Patches currently in stable-queue which might be from p.zabel@pengutronix.de are

queue-4.4/gpu-ipu-v3-fix-imx-ipuv3-crtc-module-autoloading.patch