Re: [PATCH v4 3/7] drm/msm/hdmi_bridge: Correct poweroff/audio cleanup order in post_disable

[Dmitry Baryshkov]

On Fri, Sep 11, 2026 at 12:29:36PM +0200, Krzysztof Kozlowski wrote:
> Turning off the power in msm_hdmi_bridge_atomic_post_disable() should
> follow reverse order of powering up, not only because it is logical, but
> also because msm_hdmi_audio_update() accesses registers thus block
> should still be powered on.
> 
> Depending on specific timing, existing code could have accesses to MMIO
> of powered off block.
> 
> Cc: stable@xxxxxxxxxxxxxxx
> Fixes: c0c0d9eeeb8d ("drm/msm: hdmi audio support")
> Reviewed-by: Konrad Dybcio <konrad.dybcio@xxxxxxxxxxxxxxxx>
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxxxxxxxx>
> ---
>  drivers/gpu/drm/msm/hdmi/hdmi_bridge.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxxxxxxxx>


-- 
With best wishes
Dmitry