linux-kernel - Re: [PATCH v3 2/9] drm/bridge: ti-sn65dsi86: zero is never greater than an unsigned int

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Date:   Mon, 3 Feb 2020 15:32:17 -0800
From:   Bjorn Andersson <bjorn.andersson@...aro.org>
To:     Douglas Anderson <dianders@...omium.org>
Cc:     Andrzej Hajda <a.hajda@...sung.com>,
        Neil Armstrong <narmstrong@...libre.com>,
        robdclark@...omium.org, linux-arm-msm@...r.kernel.org,
        seanpaul@...omium.org, Jeffrey Hugo <jeffrey.l.hugo@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Rob Clark <robdclark@...il.com>,
        Jonas Karlman <jonas@...boo.se>, linux-kernel@...r.kernel.org,
        dri-devel@...ts.freedesktop.org, David Airlie <airlied@...ux.ie>,
        Jernej Skrabec <jernej.skrabec@...l.net>,
        Laurent Pinchart <Laurent.pinchart@...asonboard.com>
Subject: Re: [PATCH v3 2/9] drm/bridge: ti-sn65dsi86: zero is never greater
 than an unsigned int

On Wed 18 Dec 14:35 PST 2019, Douglas Anderson wrote:

> When we iterate over ti_sn_bridge_dp_rate_lut, there's no reason to
> start at index 0 which always contains the value 0.  0 is not a valid
> link rate.
> 
> This change should have no real effect but is a small cleanup.
> 
> Signed-off-by: Douglas Anderson <dianders@...omium.org>
> Tested-by: Rob Clark <robdclark@...il.com>
> Reviewed-by: Rob Clark <robdclark@...il.com>

Reviewed-by: Bjorn Andersson <bjorn.andersson@...aro.org>

> ---
> 
> Changes in v3: None
> Changes in v2: None
> 
>  drivers/gpu/drm/bridge/ti-sn65dsi86.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/bridge/ti-sn65dsi86.c b/drivers/gpu/drm/bridge/ti-sn65dsi86.c
> index 2fb9370a76e6..7b596af265e4 100644
> --- a/drivers/gpu/drm/bridge/ti-sn65dsi86.c
> +++ b/drivers/gpu/drm/bridge/ti-sn65dsi86.c
> @@ -458,7 +458,7 @@ static void ti_sn_bridge_set_dp_rate(struct ti_sn_bridge *pdata)
>  	/* set DP data rate */
>  	dp_rate_mhz = ((bit_rate_mhz / pdata->dsi->lanes) * DP_CLK_FUDGE_NUM) /
>  							DP_CLK_FUDGE_DEN;
> -	for (i = 0; i < ARRAY_SIZE(ti_sn_bridge_dp_rate_lut) - 1; i++)
> +	for (i = 1; i < ARRAY_SIZE(ti_sn_bridge_dp_rate_lut) - 1; i++)
>  		if (ti_sn_bridge_dp_rate_lut[i] > dp_rate_mhz)
>  			break;
>  
> -- 
> 2.24.1.735.g03f4e72817-goog
>