drm/edid: Remove arbitrary EDID extension limit

Signed-off-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 5 insertions, 14 deletions

diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index 58b67932f04a..cf24ecab6a4a 100644
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -1325,7 +1325,6 @@ static int add_detailed_info_eedid(struct drm_connector *connector,
         int i, modes = 0;
         char *edid_ext = NULL;
         struct detailed_timing *timing;
-        int edid_ext_num;
         int start_offset, end_offset;
         int timing_level;
 
@@ -1342,19 +1341,15 @@ static int add_detailed_info_eedid(struct drm_connector *connector,
                 return 0;
         }
 
-        /* Chose real EDID extension number */
-        edid_ext_num = edid->extensions > DRM_MAX_EDID_EXT_NUM ?
-                DRM_MAX_EDID_EXT_NUM : edid->extensions;
-
         /* Find CEA extension */
-        for (i = 0; i < edid_ext_num; i++) {
+        for (i = 0; i < edid->extensions; i++) {
                 edid_ext = (char *)edid + EDID_LENGTH * (i + 1);
                 /* This block is CEA extension */
                 if (edid_ext[0] == 0x02)
                         break;
         }
 
-        if (i == edid_ext_num) {
+        if (i == edid->extensions) {
                 /* if there is no additional timing EDID block, return */
                 return 0;
         }
@@ -1393,7 +1388,7 @@ static int add_detailed_info_eedid(struct drm_connector *connector,
 bool drm_detect_hdmi_monitor(struct edid *edid)
 {
         char *edid_ext = NULL;
-        int i, hdmi_id, edid_ext_num;
+        int i, hdmi_id;
         int start_offset, end_offset;
         bool is_hdmi = false;
 
@@ -1401,19 +1396,15 @@ bool drm_detect_hdmi_monitor(struct edid *edid)
         if (edid == NULL || edid->extensions == 0)
                 goto end;
 
-        /* Chose real EDID extension number */
-        edid_ext_num = edid->extensions > DRM_MAX_EDID_EXT_NUM ?
-                       DRM_MAX_EDID_EXT_NUM : edid->extensions;
-
         /* Find CEA extension */
-        for (i = 0; i < edid_ext_num; i++) {
+        for (i = 0; i < edid->extensions; i++) {
                 edid_ext = (char *)edid + EDID_LENGTH * (i + 1);
                 /* This block is CEA extension */
                 if (edid_ext[0] == 0x02)
                         break;
         }
 
-        if (i == edid_ext_num)
+        if (i == edid->extensions)
                 goto end;
 
         /* Data block offset in CEA extension block */