drm/edid: Remove arbitrary EDID extension limit

[pandora-kernel.git] / drivers / gpu / drm / radeon / radeon_combios.c

diff --git a/drivers/gpu/drm/radeon/radeon_combios.c b/drivers/gpu/drm/radeon/radeon_combios.c
index 2becded..20f38b8 100644 (file)
--- a/drivers/gpu/drm/radeon/radeon_combios.c
+++ b/drivers/gpu/drm/radeon/radeon_combios.c
@@ -450,17 +450,17 @@ bool radeon_combios_check_hardcoded_edid(struct radeon_device *rdev)
 {
        int edid_info;
        struct edid *edid;
+       unsigned char *raw;
        edid_info = combios_get_table_offset(rdev->ddev, COMBIOS_HARDCODED_EDID_TABLE);
        if (!edid_info)
                return false;
 
-       edid = kmalloc(EDID_LENGTH * (DRM_MAX_EDID_EXT_NUM + 1),
-                      GFP_KERNEL);
+       raw = rdev->bios + edid_info;
+       edid = kmalloc(EDID_LENGTH * (raw[0x7e] + 1), GFP_KERNEL);
        if (edid == NULL)
                return false;
 
-       memcpy((unsigned char *)edid,
-              (unsigned char *)(rdev->bios + edid_info), EDID_LENGTH);
+       memcpy((unsigned char *)edid, raw, EDID_LENGTH * (raw[0x7e] + 1));
 
        if (!drm_edid_is_valid(edid)) {
                kfree(edid);