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authorDave Airlie <airlied@redhat.com>2016-04-27 01:24:51 (GMT)
committerDave Airlie <airlied@redhat.com>2016-05-05 02:51:57 (GMT)
commit6e86d58be3d175ca950eb0dde05f175debc10ef3 (patch)
tree731589d7e6f58d9fc10ff0029f129f31a2dea002
parentb164d31f50b2923a7a92c2a40cb46973a6ba8c36 (diff)
downloadlinux-6e86d58be3d175ca950eb0dde05f175debc10ef3.tar.xz
drm/fb_helper: add connector reference counting. (v2)
This takes a reference count when fbdev adds the connector, and drops it when it removes the connector. It also drops the now unneeded code to find connectors and remove the from the modeset as they are reference counted. v2: drop references when removing all connectors at end. Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Reviewed-by: Daniel Stone <daniels@collabora.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
-rw-r--r--drivers/gpu/drm/drm_fb_helper.c38
1 files changed, 5 insertions, 33 deletions
diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c
index 62f849f..0bb3d4b 100644
--- a/drivers/gpu/drm/drm_fb_helper.c
+++ b/drivers/gpu/drm/drm_fb_helper.c
@@ -162,40 +162,13 @@ int drm_fb_helper_add_one_connector(struct drm_fb_helper *fb_helper, struct drm_
if (!fb_helper_connector)
return -ENOMEM;
+ drm_connector_reference(connector);
fb_helper_connector->connector = connector;
fb_helper->connector_info[fb_helper->connector_count++] = fb_helper_connector;
return 0;
}
EXPORT_SYMBOL(drm_fb_helper_add_one_connector);
-static void remove_from_modeset(struct drm_mode_set *set,
- struct drm_connector *connector)
-{
- int i, j;
-
- for (i = 0; i < set->num_connectors; i++) {
- if (set->connectors[i] == connector)
- break;
- }
-
- if (i == set->num_connectors)
- return;
-
- for (j = i + 1; j < set->num_connectors; j++) {
- set->connectors[j - 1] = set->connectors[j];
- }
- set->num_connectors--;
-
- /*
- * TODO maybe need to makes sure we set it back to !=NULL somewhere?
- */
- if (set->num_connectors == 0) {
- set->fb = NULL;
- drm_mode_destroy(connector->dev, set->mode);
- set->mode = NULL;
- }
-}
-
int drm_fb_helper_remove_one_connector(struct drm_fb_helper *fb_helper,
struct drm_connector *connector)
{
@@ -215,6 +188,7 @@ int drm_fb_helper_remove_one_connector(struct drm_fb_helper *fb_helper,
if (i == fb_helper->connector_count)
return -EINVAL;
fb_helper_connector = fb_helper->connector_info[i];
+ drm_connector_unreference(fb_helper_connector->connector);
for (j = i + 1; j < fb_helper->connector_count; j++) {
fb_helper->connector_info[j - 1] = fb_helper->connector_info[j];
@@ -222,10 +196,6 @@ int drm_fb_helper_remove_one_connector(struct drm_fb_helper *fb_helper,
fb_helper->connector_count--;
kfree(fb_helper_connector);
- /* also cleanup dangling references to the connector: */
- for (i = 0; i < fb_helper->crtc_count; i++)
- remove_from_modeset(&fb_helper->crtc_info[i].mode_set, connector);
-
return 0;
}
EXPORT_SYMBOL(drm_fb_helper_remove_one_connector);
@@ -635,8 +605,10 @@ static void drm_fb_helper_crtc_free(struct drm_fb_helper *helper)
{
int i;
- for (i = 0; i < helper->connector_count; i++)
+ for (i = 0; i < helper->connector_count; i++) {
+ drm_connector_unreference(helper->connector_info[i]->connector);
kfree(helper->connector_info[i]);
+ }
kfree(helper->connector_info);
for (i = 0; i < helper->crtc_count; i++) {
kfree(helper->crtc_info[i].mode_set.connectors);