Re: [PATCH] drm/rockchip: lvds: do not print error message when deferring probe

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Hi Quentin,

On Fri, Nov 17, 2023 at 3:31 PM Quentin Schulz <foss+kernel@xxxxxxxxx> wrote:
>
> From: Quentin Schulz <quentin.schulz@xxxxxxxxxxxxxxxxxxxxx>
>
> This scary message may happen if the panel or bridge is not probed
> before the LVDS controller is, resulting in some head scratching because
> the LVDS panel is actually working, since a later try will eventually
> find the panel or bridge.
>
> Therefore let's demote this error message into a debug message to not
> scare users unnecessarily.
...

> diff --git a/drivers/gpu/drm/rockchip/rockchip_lvds.c b/drivers/gpu/drm/rockchip/rockchip_lvds.c
> index f0f47e9abf5a..52e2ce2a61a8 100644
> --- a/drivers/gpu/drm/rockchip/rockchip_lvds.c
> +++ b/drivers/gpu/drm/rockchip/rockchip_lvds.c
> @@ -577,7 +577,7 @@ static int rockchip_lvds_bind(struct device *dev, struct device *master,
>                 ret = -EINVAL;
>                 goto err_put_port;
>         } else if (ret) {
> -               DRM_DEV_ERROR(dev, "failed to find panel and bridge node\n");
> +               DRM_DEV_DEBUG(dev, "failed to find panel and bridge node\n");
>                 ret = -EPROBE_DEFER;

What about using dev_err_probe() instead?




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