linux-kernel - Re: [PATCH v3] drm/edid: fixed the bug that hdr metadata was not reset

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Message-ID: <878qmzio16.fsf@intel.com>
Date: Wed, 14 May 2025 11:39:49 +0300
From: Jani Nikula <jani.nikula@...ux.intel.com>
To: "feijuan.li" <feijuan.li@...sung.com>, jingoohan1@...il.com,
 maarten.lankhorst@...ux.intel.com, mripard@...nel.org,
 tzimmermann@...e.de, airlied@...il.com, simona@...ll.ch,
 dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Cc: feijuan.li@...sung.com, hongfei.tang@...sung.com,
 minggui.yan@...sung.com, qilin.wang@...sung.com
Subject: Re: [PATCH v3] drm/edid: fixed the bug that hdr metadata was not reset

On Wed, 14 May 2025, "feijuan.li" <feijuan.li@...sung.com> wrote:
> When DP connected to a device with HDR capability,
> the hdr structure was filled.Then connected to another
> sink device without hdr capability, but the hdr info
> still exist.
>
> Signed-off-by: feijuan.li <feijuan.li@...sung.com>

Reviewed-by: Jani Nikula <jani.nikula@...el.com>


> ---
>  drivers/gpu/drm/drm_edid.c | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
> index 13bc4c290b17..9edb3247c767 100644
> --- a/drivers/gpu/drm/drm_edid.c
> +++ b/drivers/gpu/drm/drm_edid.c
> @@ -6596,6 +6596,7 @@ static void drm_reset_display_info(struct drm_connector *connector)
>  	info->has_hdmi_infoframe = false;
>  	info->rgb_quant_range_selectable = false;
>  	memset(&info->hdmi, 0, sizeof(info->hdmi));
> +	memset(&connector->hdr_sink_metadata, 0, sizeof(connector->hdr_sink_metadata));
>  
>  	info->edid_hdmi_rgb444_dc_modes = 0;
>  	info->edid_hdmi_ycbcr444_dc_modes = 0;

-- 
Jani Nikula, Intel