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From:   Jeffrey Hugo <jeffrey.l.hugo@gmail.com>
To:     robdclark@gmail.com, sean@poorly.run, airlied@linux.ie,
        daniel@ffwll.ch
Cc:     bjorn.andersson@linaro.org, linux-arm-msm@vger.kernel.org,
        dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org,
        linux-kernel@vger.kernel.org,
        Jeffrey Hugo <jeffrey.l.hugo@gmail.com>
Subject: [PATCH] drm: msm: Fix add_gpu_components
Date:   Wed, 26 Jun 2019 11:00:15 -0700
Message-Id: <20190626180015.45242-1-jeffrey.l.hugo@gmail.com>
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

add_gpu_components() adds found GPU nodes from the DT to the match list,
regardless of the status of the nodes.  This is a problem, because if the
nodes are disabled, they should not be on the match list because they will
not be matched.  This prevents display from initing if a GPU node is
defined, but it's status is disabled.

Fix this by checking the node's status before adding it to the match list.

Fixes: dc3ea265b856 ("drm/msm: Drop the gpu binding")
Signed-off-by: Jeffrey Hugo <jeffrey.l.hugo@gmail.com>
---
 drivers/gpu/drm/msm/msm_drv.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c
index ab64ab470de7..4aeb84f1d874 100644
--- a/drivers/gpu/drm/msm/msm_drv.c
+++ b/drivers/gpu/drm/msm/msm_drv.c
@@ -1279,7 +1279,8 @@ static int add_gpu_components(struct device *dev,
 	if (!np)
 		return 0;
 
-	drm_of_component_match_add(dev, matchptr, compare_of, np);
+	if (of_device_is_available(np))
+		drm_of_component_match_add(dev, matchptr, compare_of, np);
 
 	of_node_put(np);
 
-- 
2.17.1