Take the HF-EEODB extension count override into account.
Signed-off-by: Jani Nikula jani.nikula@intel.com --- drivers/gpu/drm/drm_edid.c | 13 +++++++++++++ 1 file changed, 13 insertions(+)
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index ba0c880dc133..6b1284b895eb 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -1629,6 +1629,19 @@ static int drm_edid_block_count(const struct drm_edid *drm_edid) /* Starting point */ num_blocks = edid_block_count(drm_edid->edid);
+ /* HF-EEODB override */ + if (drm_edid->size >= edid_size_by_blocks(2)) { + int eeodb; + + /* + * Note: HF-EEODB may specify a smaller extension count than the + * regular one. Unlike in buffer allocation, here we can use it. + */ + eeodb = edid_hfeeodb_block_count(drm_edid->edid); + if (eeodb) + num_blocks = eeodb; + } + /* Limit by allocated size */ num_blocks = min(num_blocks, (int)drm_edid->size / EDID_LENGTH);