linux-kernel - Re: [PATCH v2 09/10] drm/msm/dp: drop modeset sanity checks

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Message-ID: <fb6c00c1-014b-e43f-07ad-3d7cf2e18a8e@quicinc.com>
Date:   Thu, 22 Sep 2022 12:57:43 -0700
From:   Kuogee Hsieh <quic_khsieh@...cinc.com>
To:     Johan Hovold <johan+linaro@...nel.org>,
        Douglas Anderson <dianders@...omium.org>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        "Rob Clark" <robdclark@...il.com>,
        Abhinav Kumar <quic_abhinavk@...cinc.com>
CC:     Andrzej Hajda <andrzej.hajda@...el.com>,
        Neil Armstrong <neil.armstrong@...aro.org>,
        Robert Foss <robert.foss@...aro.org>,
        "Laurent Pinchart" <Laurent.pinchart@...asonboard.com>,
        Jonas Karlman <jonas@...boo.se>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        Daniel Vetter <daniel@...ll.ch>, Sean Paul <sean@...rly.run>,
        Stephen Boyd <swboyd@...omium.org>,
        Bjorn Andersson <andersson@...nel.org>,
        "Manivannan Sadhasivam" <manivannan.sadhasivam@...aro.org>,
        Steev Klimaszewski <steev@...i.org>,
        <dri-devel@...ts.freedesktop.org>, <linux-arm-msm@...r.kernel.org>,
        <freedreno@...ts.freedesktop.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 09/10] drm/msm/dp: drop modeset sanity checks


On 9/13/2022 1:53 AM, Johan Hovold wrote:
> Drop the overly defensive modeset sanity checks of function parameters
> which have already been checked or used by the callers.
>
> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
> Signed-off-by: Johan Hovold <johan+linaro@...nel.org>
Tested-by: Kuogee Hsieh <quic_khsieh@...cinc.com>
Reviewed-by: Kuogee Hsieh <quic_khsieh@...cinc.com>
> ---
>   drivers/gpu/drm/msm/dp/dp_display.c | 7 +------
>   1 file changed, 1 insertion(+), 6 deletions(-)
>
> diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c
> index 808a516e84c5..33daec11f813 100644
> --- a/drivers/gpu/drm/msm/dp/dp_display.c
> +++ b/drivers/gpu/drm/msm/dp/dp_display.c
> @@ -1607,15 +1607,10 @@ static int dp_display_get_next_bridge(struct msm_dp *dp)
>   int msm_dp_modeset_init(struct msm_dp *dp_display, struct drm_device *dev,
>   			struct drm_encoder *encoder)
>   {
> -	struct msm_drm_private *priv;
> +	struct msm_drm_private *priv = dev->dev_private;
>   	struct dp_display_private *dp_priv;
>   	int ret;
>   
> -	if (WARN_ON(!encoder) || WARN_ON(!dp_display) || WARN_ON(!dev))
> -		return -EINVAL;
> -
> -	priv = dev->dev_private;
> -
>   	if (priv->num_bridges == ARRAY_SIZE(priv->bridges)) {
>   		DRM_DEV_ERROR(dev->dev, "too many bridges\n");
>   		return -ENOSPC;