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| author |   Chenyuan Yang <chenyuan0y@gmail.com> | 2025-07-22 16:17:40 -0500 |
|---|---|---|
| committer |   Rob Clark <robin.clark@oss.qualcomm.com> | 2025-08-25 14:00:27 -0700 |
| commit | abebfed208515726760d79cf4f9f1a76b9a10a84 (patch) | |
| tree | 324f526e87d634d521f15f04218a5279b589e000 | |
| parent | dt-bindings: display/msm: qcom,mdp5: drop lut clock (diff) | |
| download | wireguard-linux-abebfed208515726760d79cf4f9f1a76b9a10a84.tar.xz wireguard-linux-abebfed208515726760d79cf4f9f1a76b9a10a84.zip | |
drm/msm/dpu: Add a null ptr check for dpu_encoder_needs_modeset
The drm_atomic_get_new_connector_state() can return NULL if the
connector is not part of the atomic state. Add a check to prevent
a NULL pointer dereference.
This follows the same pattern used in dpu_encoder_update_topology()
within the same file, which checks for NULL before using conn_state.
Signed-off-by: Chenyuan Yang <chenyuan0y@gmail.com>
Fixes: 1ce69c265a53 ("drm/msm/dpu: move resource allocation to CRTC")
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Patchwork: https://patchwork.freedesktop.org/patch/665188/
Signed-off-by: Rob Clark <robin.clark@oss.qualcomm.com>
| -rw-r--r-- | drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c index 05e5f3463e30..258edaa18fc0 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c @@ -730,6 +730,8 @@ bool dpu_encoder_needs_modeset(struct drm_encoder *drm_enc, struct drm_atomic_st return false; conn_state = drm_atomic_get_new_connector_state(state, connector); + if (!conn_state) + return false; /** * These checks are duplicated from dpu_encoder_update_topology() since |