linux-kernel - Re: [PATCH] drm/bridge: cdns: remove set but not used variable 'bpp'

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Date:   Mon, 6 Jan 2020 16:07:52 +0100
From:   Neil Armstrong <narmstrong@...libre.com>
To:     yu kuai <yukuai3@...wei.com>, a.hajda@...sung.com,
        Laurent.pinchart@...asonboard.com, jonas@...boo.se,
        jernej.skrabec@...l.net, airlied@...ux.ie, daniel@...ll.ch
Cc:     dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        yi.zhang@...wei.com, zhengbin13@...wei.com
Subject: Re: [PATCH] drm/bridge: cdns: remove set but not used variable 'bpp'

On 26/12/2019 13:12, yu kuai wrote:
> Fixes gcc '-Wunused-but-set-variable' warning:
> 
> drivers/gpu/drm/bridge/cdns-dsi.c: In function
> ‘cdns_dsi_bridge_enable’:
> drivers/gpu/drm/bridge/cdns-dsi.c:788:6: warning: variable ‘bpp’
> set but not used [-Wunused-but-set-variable]
> 
> It is never used, and so can be removed.
> 
> Signed-off-by: yu kuai <yukuai3@...wei.com>
> ---
>  drivers/gpu/drm/bridge/cdns-dsi.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/drivers/gpu/drm/bridge/cdns-dsi.c b/drivers/gpu/drm/bridge/cdns-dsi.c
> index a6ab2d281a9b..b7c97f060241 100644
> --- a/drivers/gpu/drm/bridge/cdns-dsi.c
> +++ b/drivers/gpu/drm/bridge/cdns-dsi.c
> @@ -784,13 +784,12 @@ static void cdns_dsi_bridge_enable(struct drm_bridge *bridge)
>  	unsigned long tx_byte_period;
>  	struct cdns_dsi_cfg dsi_cfg;
>  	u32 tmp, reg_wakeup, div;
> -	int bpp, nlanes;
> +	int nlanes;
>  
>  	if (WARN_ON(pm_runtime_get_sync(dsi->base.dev) < 0))
>  		return;
>  
>  	mode = &bridge->encoder->crtc->state->adjusted_mode;
> -	bpp = mipi_dsi_pixel_format_to_bpp(output->dev->format);
>  	nlanes = output->dev->lanes;
>  
>  	WARN_ON_ONCE(cdns_dsi_check_conf(dsi, mode, &dsi_cfg, false));
> 


Reviewed-by: Neil Armstrong <narmstrong@...libre.com>

and applying to drm-misc-next