* [PATCH] drm/msm/dsi: do not use unintialized kms
@ 2021-07-05 23:14 David Heidelberg
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From: David Heidelberg @ 2021-07-05 23:14 UTC (permalink / raw)
To: Sean Paul, robdclark; +Cc: linux-arm-msm, David Heidelberg
Without this patch boot ends at NULL ptr exception at msm_dsi_manager_setup_encoder
on devices like Nexus 7 with MDP4 version 4.4.
Fixes: 5d0e97dc8c4c ("drm/msm/dsi: Move setup_encoder to modeset_init")
Signed-off-by: David Heidelberg <david@ixit.cz>
---
drivers/gpu/drm/msm/dsi/dsi_manager.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/msm/dsi/dsi_manager.c b/drivers/gpu/drm/msm/dsi/dsi_manager.c
index 4ebfedc4a9ac..8114612b34b0 100644
--- a/drivers/gpu/drm/msm/dsi/dsi_manager.c
+++ b/drivers/gpu/drm/msm/dsi/dsi_manager.c
@@ -230,7 +230,7 @@ void msm_dsi_manager_setup_encoder(int id)
struct msm_kms *kms = priv->kms;
struct drm_encoder *encoder = msm_dsi_get_encoder(msm_dsi);
- if (encoder && kms->funcs->set_encoder_mode)
+ if (encoder && kms && kms->funcs->set_encoder_mode)
kms->funcs->set_encoder_mode(kms, encoder,
dsi_mgr_is_cmd_mode(msm_dsi));
}
--
2.30.2
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2021-07-05 23:14 [PATCH] drm/msm/dsi: do not use unintialized kms David Heidelberg
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