[PATCH 4.2.y-ckt 098/268] drm/nouveau/kms: take mode_config mutex in connector hotplug path
From: Kamal Mostafa
Date: Wed Jan 27 2016 - 16:39:32 EST
4.2.8-ckt3 -stable review patch. If anyone has any objections, please let me know.
---8<------------------------------------------------------------
From: Ben Skeggs <bskeggs@xxxxxxxxxx>
commit 0a882cadbc63fd2da3994af7115b4ada2fcbd638 upstream.
fdo#93634
Signed-off-by: Ben Skeggs <bskeggs@xxxxxxxxxx>
Signed-off-by: Kamal Mostafa <kamal@xxxxxxxxxxxxx>
---
drivers/gpu/drm/nouveau/nouveau_connector.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/nouveau/nouveau_connector.c b/drivers/gpu/drm/nouveau/nouveau_connector.c
index 3162040..05490ef 100644
--- a/drivers/gpu/drm/nouveau/nouveau_connector.c
+++ b/drivers/gpu/drm/nouveau/nouveau_connector.c
@@ -969,10 +969,13 @@ nouveau_connector_hotplug(struct nvif_notify *notify)
NV_DEBUG(drm, "%splugged %s\n", plugged ? "" : "un", name);
+ mutex_lock(&drm->dev->mode_config.mutex);
if (plugged)
drm_helper_connector_dpms(connector, DRM_MODE_DPMS_ON);
else
drm_helper_connector_dpms(connector, DRM_MODE_DPMS_OFF);
+ mutex_unlock(&drm->dev->mode_config.mutex);
+
drm_helper_hpd_irq_event(connector->dev);
}
--
1.9.1