Re: [PATCH v5 06/10] drm/msm/dpu: clear the CDM block left by a previous reservation

[Konrad Dybcio]

On 10/24/26 1:25 AM, Dmitry Baryshkov wrote:
> dpu_encoder_virt_atomic_mode_set() only updates cur_master->hw_cdm for a
> writeback with a job or for DP, so a modeset of a writeback without a job
> keeps the CDM of the previous reservation, which the crtc may no longer
> own.  dpu_encoder_helper_phys_cleanup() later unbinds that CDM from its
> pingpong and flushes it, changing a block which may by then belong to
> another display.
> 
> Store NULL when no CDM is assigned.
> 
> Fixes: 8b45a26f2ba9 ("drm/msm/dpu: reserve cdm blocks for writeback in case of YUV output")
> Assisted-by: LLM
> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxxxxxxxx>
> ---

Reviewed-by: Konrad Dybcio <konrad.dybcio@xxxxxxxxxxxxxxxx>

Konrad