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drm/nouveau/kms: take mode_config mutex in connector hotplug path

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commit 0a882cadbc63fd2da3994af7115b4ada2fcbd638 upstream.

fdo#93634

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ben Skeggs 2016-01-08 08:56:51 +10:00 • committed by Greg Kroah-Hartman
parent 32c021915d
commit 61392a0d00
1 changed files with 3 additions and 0 deletions
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3
drivers/gpu/drm/nouveau/nouveau_connector.c
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@ -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);
}