[PATCH 5.10 297/306] drm/msi/mdp4: populate priv->kms in mdp4_kms_init

[Greg Kroah-Hartman]

From: David Heidelberg <david@xxxxxxx>

commit cb0927ab80d224c9074f53d1a55b087d12ec5a85 upstream.

Without this fix boot throws NULL ptr exception at msm_dsi_manager_setup_encoder
on devices like Nexus 7 2013 (MDP4 v4.4).

Fixes: 03436e3ec69c ("drm/msm/dsi: Move setup_encoder to modeset_init")

Cc: <stable@xxxxxxxxxxxxxxx>
Signed-off-by: David Heidelberg <david@xxxxxxx>
Link: https://lore.kernel.org/r/20210811170631.39296-1-david@xxxxxxx
Signed-off-by: Rob Clark <robdclark@xxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 drivers/gpu/drm/msm/disp/mdp4/mdp4_kms.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/drivers/gpu/drm/msm/disp/mdp4/mdp4_kms.c
+++ b/drivers/gpu/drm/msm/disp/mdp4/mdp4_kms.c
@@ -397,6 +397,7 @@ struct msm_kms *mdp4_kms_init(struct drm
 {
 	struct platform_device *pdev = to_platform_device(dev->dev);
 	struct mdp4_platform_config *config = mdp4_get_config(pdev);
+	struct msm_drm_private *priv = dev->dev_private;
 	struct mdp4_kms *mdp4_kms;
 	struct msm_kms *kms = NULL;
 	struct msm_gem_address_space *aspace;
@@ -412,7 +413,8 @@ struct msm_kms *mdp4_kms_init(struct drm
 
 	mdp_kms_init(&mdp4_kms->base, &kms_funcs);
 
-	kms = &mdp4_kms->base.base;
+	priv->kms = &mdp4_kms->base.base;
+	kms = priv->kms;
 
 	mdp4_kms->dev = dev;