drm/edid: fixed the bug that hdr metadata was not reset

commit 6692dbc upstream.

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.

Fixes: e85959d ("drm: Parse HDR metadata info from EDID")
Cc: <[email protected]> # v5.3+
Signed-off-by: "feijuan.li" <[email protected]>
Reviewed-by: Jani Nikula <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jani Nikula <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

Author: feijuan.li

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;