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From:   Sasha Levin <Alexander.Levin@microsoft.com>
To:     "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        "stable@vger.kernel.org" <stable@vger.kernel.org>
CC:     Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>,
        Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>,
        Mauro Carvalho Chehab <mchehab@s-opensource.com>,
        Sasha Levin <Alexander.Levin@microsoft.com>
Subject: [PATCH AUTOSEL for 4.9 141/219] [media] v4l: vsp1: Register pipe with
 output WPF
Thread-Topic: [PATCH AUTOSEL for 4.9 141/219] [media] v4l: vsp1: Register pipe
 with output WPF
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Date:   Sat, 3 Mar 2018 22:29:18 +0000
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From: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>

[ Upstream commit 1531a208ed861e4bd287444f9466ffcf98383de2 ]

The DRM object does not register the pipe with the WPF object. This is
used internally throughout the driver as a means of accessing the pipe.
As such this breaks operations which require access to the pipe from WPF
interrupts.

Register the pipe inside the WPF object after it has been declared as
the output.

Fixes: ff7e97c94d9f ("[media] v4l: vsp1: Store pipeline pointer in rwpf")

Signed-off-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
---
 drivers/media/platform/vsp1/vsp1_drm.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/media/platform/vsp1/vsp1_drm.c b/drivers/media/platfor=
m/vsp1/vsp1_drm.c
index cd209dccff1b..8e2aa3f8e52f 100644
--- a/drivers/media/platform/vsp1/vsp1_drm.c
+++ b/drivers/media/platform/vsp1/vsp1_drm.c
@@ -596,6 +596,7 @@ int vsp1_drm_init(struct vsp1_device *vsp1)
 	pipe->bru =3D &vsp1->bru->entity;
 	pipe->lif =3D &vsp1->lif->entity;
 	pipe->output =3D vsp1->wpf[0];
+	pipe->output->pipe =3D pipe;
=20
 	return 0;
 }
--=20
2.14.1