Re: [PATCH] drm/msm/dpu: clear pending peripheral flush state

[Dmitry Baryshkov]

On Fri, Aug 28, 2026 at 11:54:40AM +0500, Saim Shujah wrote:
> dpu_hw_ctl_clear_pending_flush() resets the cached per-block state after a
> flush transaction, but misses pending_periph_flush_mask.
> 
> The peripheral flush updater accumulates interface bits in this mask. A
> later transaction which sets the top-level peripheral flush bit can write
> stale interface bits to CTL_PERIPH_FLUSH together with the current state.
> 
> Peripheral flush support was added after the helper started clearing every
> individual pending flush mask. Clear the peripheral mask together with the
> other cached child masks.
> 
> Fixes: 64f7b81f0358 ("drm/msm/dpu: add support of new peripheral flush mechanism")
> Cc: stable@xxxxxxxxxxxxxxx
> Signed-off-by: Saim Shujah <saimzst@xxxxxxxxx>
> ---
>  drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c | 1 +
>  1 file changed, 1 insertion(+)
> 

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

> 

-- 
With best wishes
Dmitry