While the GPU is guaranteed to be on when a hotplug has been received,
the same assertion does not hold true if a connector probe has been
started by userspace without having had received a sysfs event. So
ensure that any connector probing keeps the GPU alive for the duration
of the probe.
Signed-off-by: Lyude Paul <lyude@xxxxxxxxxx>
Cc: Karol Herbst <karolherbst@xxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
---
drivers/gpu/drm/nouveau/dispnv50/disp.c | 2 +-
drivers/gpu/drm/nouveau/nouveau_connector.c | 21 +++++++++++++++++++--
drivers/gpu/drm/nouveau/nouveau_connector.h | 3 +++
3 files changed, 23 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/nouveau/dispnv50/disp.c b/drivers/gpu/drm/nouveau/dispnv50/disp.c
index ea2a886854fe..0f283ca75189 100644
--- a/drivers/gpu/drm/nouveau/dispnv50/disp.c
+++ b/drivers/gpu/drm/nouveau/dispnv50/disp.c
@@ -858,7 +858,7 @@ static const struct drm_connector_funcs
nv50_mstc = {
.reset = nouveau_conn_reset,
.detect = nv50_mstc_detect,
- .fill_modes = drm_helper_probe_single_connector_modes,
+ .fill_modes = nouveau_connector_probe_single_connector_modes,
.destroy = nv50_mstc_destroy,
.atomic_duplicate_state = nouveau_conn_atomic_duplicate_state,
.atomic_destroy_state = nouveau_conn_atomic_destroy_state,
diff --git a/drivers/gpu/drm/nouveau/nouveau_connector.c b/drivers/gpu/drm/nouveau/nouveau_connector.c
index 2a45b4c2ceb0..feb142fb7a8a 100644
--- a/drivers/gpu/drm/nouveau/nouveau_connector.c
+++ b/drivers/gpu/drm/nouveau/nouveau_connector.c
@@ -770,6 +770,23 @@ nouveau_connector_force(struct drm_connector *connector)
nouveau_connector_set_encoder(connector, nv_encoder);
}
+int
+nouveau_connector_probe_single_connector_modes(struct drm_connector *connector,
+ uint32_t maxX, uint32_t maxY)
+{
+ struct device *dev = connector->dev->dev;
+ int ret;
+
+ ret = pm_runtime_get_sync(dev);
+ if (WARN_ON(ret < 0 && ret != -EACCES))
+ return 0;
+
+ ret = drm_helper_probe_single_connector_modes(connector, maxX, maxY);
+
+ pm_runtime_put_autosuspend(dev);
+ return ret;
+}
+
static int
nouveau_connector_set_property(struct drm_connector *connector,
struct drm_property *property, uint64_t value)
@@ -1088,7 +1105,7 @@ nouveau_connector_funcs = {
.reset = nouveau_conn_reset,
.detect = nouveau_connector_detect,
.force = nouveau_connector_force,
- .fill_modes = drm_helper_probe_single_connector_modes,
+ .fill_modes = nouveau_connector_probe_single_connector_modes,
.set_property = nouveau_connector_set_property,
.destroy = nouveau_connector_destroy,
.atomic_duplicate_state = nouveau_conn_atomic_duplicate_state,
@@ -1103,7 +1120,7 @@ nouveau_connector_funcs_lvds = {
.reset = nouveau_conn_reset,
.detect = nouveau_connector_detect_lvds,
.force = nouveau_connector_force,
- .fill_modes = drm_helper_probe_single_connector_modes,
+ .fill_modes = nouveau_connector_probe_single_connector_modes,
.set_property = nouveau_connector_set_property,
.destroy = nouveau_connector_destroy,
.atomic_duplicate_state = nouveau_conn_atomic_duplicate_state,
diff --git a/drivers/gpu/drm/nouveau/nouveau_connector.h b/drivers/gpu/drm/nouveau/nouveau_connector.h
index 2d9d35a146a4..e9ffc6eebda2 100644
--- a/drivers/gpu/drm/nouveau/nouveau_connector.h
+++ b/drivers/gpu/drm/nouveau/nouveau_connector.h
@@ -106,6 +106,9 @@ nouveau_crtc_connector_get(struct nouveau_crtc *nv_crtc)
struct drm_connector *
nouveau_connector_create(struct drm_device *, const struct dcb_output *);
+int
+nouveau_connector_probe_single_connector_modes(struct drm_connector *,
+ uint32_t, uint32_t);
extern int nouveau_tv_disable;
extern int nouveau_ignorelid;
--
2.17.1
