[PATCH 1/2] drm/fsl-dcu: avoid disabling pixel clock twice on suspend

[Noralf Trønnes]

Den 10.11.2017 17.25, skrev Stefan Agner:
> With commit 0a70c998d0c5 ("drm/fsl-dcu: enable pixel clock when
> enabling CRTC") the pixel clock is controlled by the CRTC code.
> Disabling the pixel clock in suspend leads to a warning due to
> the second clk_disable_unprepare call:
>    WARNING: CPU: 0 PID: 359 at drivers/clk/clk.c:594 clk_core_disable+0x8c/0x90
>
> Remove clk_disable_unprepare call for pixel clock to avoid
> unbalanced clock disable on suspend.
>
> Fixes: 0a70c998d0c5 ("drm/fsl-dcu: enable pixel clock when enabling CRTC")
> Signed-off-by: Stefan Agner <stefan at agner.ch>
> ---
>   drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c | 1 -
>   1 file changed, 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c
> index 1a9ee657bbac..24f234902646 100644
> --- a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c
> +++ b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c
> @@ -202,7 +202,6 @@ static int fsl_dcu_drm_pm_suspend(struct device *dev)
>   		return ret;
>   	}
>   
> -	clk_disable_unprepare(fsl_dev->pix_clk);
>   	clk_disable_unprepare(fsl_dev->clk);
>   
>   	return 0;

Acked-by: Noralf Trønnes <noralf at tronnes.org>