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| author |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-10-12 12:53:48 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-10-12 12:53:48 +0200 |
| commit | 62d2e531d7f353a77356c461bac12a0dc23aff7c (patch) | |
| tree | 03743efdbbac363afec5411f8debd1cc2e016cdc | |
| parent | Merge tag 'for-gkh' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma (diff) | |
| parent | Merge branch 'linux-4.19' of git://github.com/skeggsb/linux into drm-fixes (diff) | |
| download | linux-dev-62d2e531d7f353a77356c461bac12a0dc23aff7c.tar.xz linux-dev-62d2e531d7f353a77356c461bac12a0dc23aff7c.zip | |
Merge tag 'drm-fixes-2018-10-12-1' of git://anongit.freedesktop.org/drm/drm
Dave writes:
"drm fixes for 4.19-rc8
single nouveau runtime reference and mst change"
* tag 'drm-fixes-2018-10-12-1' of git://anongit.freedesktop.org/drm/drm:
drm/nouveau/drm/nouveau: Grab runtime PM ref in nv50_mstc_detect()
| -rw-r--r-- | drivers/gpu/drm/nouveau/dispnv50/disp.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/drivers/gpu/drm/nouveau/dispnv50/disp.c b/drivers/gpu/drm/nouveau/dispnv50/disp.c index 5691dfa1db6f..041e7daf8a33 100644 --- a/drivers/gpu/drm/nouveau/dispnv50/disp.c +++ b/drivers/gpu/drm/nouveau/dispnv50/disp.c @@ -900,9 +900,22 @@ static enum drm_connector_status nv50_mstc_detect(struct drm_connector *connector, bool force) { struct nv50_mstc *mstc = nv50_mstc(connector); + enum drm_connector_status conn_status; + int ret; + if (!mstc->port) return connector_status_disconnected; - return drm_dp_mst_detect_port(connector, mstc->port->mgr, mstc->port); + + ret = pm_runtime_get_sync(connector->dev->dev); + if (ret < 0 && ret != -EACCES) + return connector_status_disconnected; + + conn_status = drm_dp_mst_detect_port(connector, mstc->port->mgr, + mstc->port); + + pm_runtime_mark_last_busy(connector->dev->dev); + pm_runtime_put_autosuspend(connector->dev->dev); + return conn_status; } static void |