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Date: Thu, 28 Jan 2016 17:17:00 -0800 From: Kamal Mostafa <kamal@...onical.com> To: linux-kernel@...r.kernel.org, stable@...r.kernel.org, kernel-team@...ts.ubuntu.com Cc: Ben Skeggs <bskeggs@...hat.com>, Kamal Mostafa <kamal@...onical.com> Subject: [PATCH 3.19.y-ckt 082/210] drm/nouveau/kms: take mode_config mutex in connector hotplug path 3.19.8-ckt14 -stable review patch. If anyone has any objections, please let me know. ---8<------------------------------------------------------------ From: Ben Skeggs <bskeggs@...hat.com> commit 0a882cadbc63fd2da3994af7115b4ada2fcbd638 upstream. fdo#93634 Signed-off-by: Ben Skeggs <bskeggs@...hat.com> Signed-off-by: Kamal Mostafa <kamal@...onical.com> --- 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 c8ac948..a088c96 100644 --- a/drivers/gpu/drm/nouveau/nouveau_connector.c +++ b/drivers/gpu/drm/nouveau/nouveau_connector.c @@ -952,10 +952,13 @@ 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
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