[PATCH 3/5] drm/edid: convert drm_parse_microsoft_vsdb to use struct cea_db *

[Vamsi Krishna Brahmajosyula]

Address the following
        FIXME: convert parsers to use struct cea_db
in the parser drm_parse_microsoft_vsdb

cea_db contains len and then data. Appropriately change the indices
when referring to individual elements (db[n] becomes data[n-1]).

Signed-off-by: Vamsi Krishna Brahmajosyula 
<vamsikrishna.brahmajosy...@gmail.com>
---
 drivers/gpu/drm/drm_edid.c | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index f79d8fbdb62b..e2ef07d00aaf 100644
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -6361,11 +6361,12 @@ drm_parse_hdmi_vsdb_video(struct drm_connector 
*connector, const struct cea_db *
  * 
https://docs.microsoft.com/en-us/windows-hardware/drivers/display/specialized-monitors-edid-extension
  */
 static void drm_parse_microsoft_vsdb(struct drm_connector *connector,
-                                    const u8 *db)
+                                    const struct cea_db *db)
 {
        struct drm_display_info *info = &connector->display_info;
-       u8 version = db[4];
-       bool desktop_usage = db[5] & BIT(6);
+       const u8 *data = cea_db_data(db);
+       u8 version = data[3];
+       bool desktop_usage = data[4] & BIT(6);
 
        /* Version 1 and 2 for HMDs, version 3 flags desktop usage explicitly */
        if (version == 1 || version == 2 || (version == 3 && !desktop_usage))
@@ -6373,7 +6374,7 @@ static void drm_parse_microsoft_vsdb(struct drm_connector 
*connector,
 
        drm_dbg_kms(connector->dev,
                    "[CONNECTOR:%d:%s] HMD or specialized display VSDB version 
%u: 0x%02x\n",
-                   connector->base.id, connector->name, version, db[5]);
+                   connector->base.id, connector->name, version, data[4]);
 }
 
 static void drm_parse_cea_ext(struct drm_connector *connector,
@@ -6423,7 +6424,7 @@ static void drm_parse_cea_ext(struct drm_connector 
*connector,
                         cea_db_is_hdmi_forum_scdb(db))
                        drm_parse_hdmi_forum_scds(connector, db);
                else if (cea_db_is_microsoft_vsdb(db))
-                       drm_parse_microsoft_vsdb(connector, data);
+                       drm_parse_microsoft_vsdb(connector, db);
                else if (cea_db_is_y420cmdb(db))
                        parse_cta_y420cmdb(connector, db, &y420cmdb_map);
                else if (cea_db_is_y420vdb(db))
-- 
2.47.0