diff options
| author | Dave Airlie <airlied@redhat.com> | 2014-05-01 09:26:53 +1000 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2014-05-01 09:26:53 +1000 |
| commit | b87577b7c768683736eea28f70779e8c75b4df62 (patch) | |
| tree | 22930353aa540db01208f444ca57dfb56915e277 /drivers/gpu/drm/drm_modes.c | |
| parent | 885ac04ab3a226d28147853d6d98eee3897a5636 (diff) | |
| download | lwn-b87577b7c768683736eea28f70779e8c75b4df62.tar.gz lwn-b87577b7c768683736eea28f70779e8c75b4df62.zip | |
drm: try harder to avoid regression when merging mode bits
For QXL hw we really want the bits to be replaced as we change
the preferred mode on the fly, and the same goes for virgl when
I get to it, however the original fix for this seems to have caused
a wierd regression on Intel G33 that in a stunning display of failure
at opposition to his normal self, Daniel failed to diagnose.
So we are left doing this, ugly ugly ugly ugly, Daniel you fixed
that G33 yet?, ugly, ugly.
Tested-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/drm_modes.c')
| -rw-r--r-- | drivers/gpu/drm/drm_modes.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/gpu/drm/drm_modes.c b/drivers/gpu/drm/drm_modes.c index 8b410576fce4..bedf1894e17e 100644 --- a/drivers/gpu/drm/drm_modes.c +++ b/drivers/gpu/drm/drm_modes.c @@ -1013,6 +1013,7 @@ EXPORT_SYMBOL(drm_mode_sort); /** * drm_mode_connector_list_update - update the mode list for the connector * @connector: the connector to update + * @merge_type_bits: whether to merge or overright type bits. * * This moves the modes from the @connector probed_modes list * to the actual mode list. It compares the probed mode against the current @@ -1021,7 +1022,8 @@ EXPORT_SYMBOL(drm_mode_sort); * This is just a helper functions doesn't validate any modes itself and also * doesn't prune any invalid modes. Callers need to do that themselves. */ -void drm_mode_connector_list_update(struct drm_connector *connector) +void drm_mode_connector_list_update(struct drm_connector *connector, + bool merge_type_bits) { struct drm_display_mode *mode; struct drm_display_mode *pmode, *pt; @@ -1039,7 +1041,10 @@ void drm_mode_connector_list_update(struct drm_connector *connector) /* if equal delete the probed mode */ mode->status = pmode->status; /* Merge type bits together */ - mode->type |= pmode->type; + if (merge_type_bits) + mode->type |= pmode->type; + else + mode->type = pmode->type; list_del(&pmode->head); drm_mode_destroy(connector->dev, pmode); break; |