Re: [PATCH] drm/stm: ltdc: restore calls to clk_{enable/disable}

[Philippe CORNU <philippe.cornu@st.com>]

Hi Benjamin,

Many thanks for this fix (and more generally for pushing STM patches on 
misc :-)

Acked-by: Philippe Cornu <philippe.cornu@st.com>

Philippe :-)

On 5/27/19 1:58 PM, Benjamin Gaignard wrote:
> From: Benjamin Gaignard <benjamin.gaignard@linaro.org>
> 
> Restore calls to clk_{enable/disable} deleted after applying the wrong
> version of the patch
> 
> Fixes: fd6905fca4f0 ("drm/stm: ltdc: remove clk_round_rate comment")
> 
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
> ---
>   drivers/gpu/drm/stm/ltdc.c | 2 ++
>   1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/gpu/drm/stm/ltdc.c b/drivers/gpu/drm/stm/ltdc.c
> index ae2aaf2a62ee..ac29890edeb6 100644
> --- a/drivers/gpu/drm/stm/ltdc.c
> +++ b/drivers/gpu/drm/stm/ltdc.c
> @@ -507,10 +507,12 @@ static bool ltdc_crtc_mode_fixup(struct drm_crtc *crtc,
>   	struct ltdc_device *ldev = crtc_to_ltdc(crtc);
>   	int rate = mode->clock * 1000;
>   
> +	clk_disable(ldev->pixel_clk);
>   	if (clk_set_rate(ldev->pixel_clk, rate) < 0) {
>   		DRM_ERROR("Cannot set rate (%dHz) for pixel clk\n", rate);
>   		return false;
>   	}
> +	clk_enable(ldev->pixel_clk);
>   
>   	adjusted_mode->clock = clk_get_rate(ldev->pixel_clk) / 1000;
>   
>