From 86698c20f71d488b32c49ed4687fb3cf8a88a5ca Mon Sep 17 00:00:00 2001 From: Seth Forshee Date: Tue, 31 Jan 2012 19:06:25 -0600 Subject: [PATCH] drm/radeon/kms: disable output polling when suspended Polling the outputs when the device is suspended can result in erroneous status updates. Disable output polling during suspend to prevent this from happening. Signed-off-by: Seth Forshee Reviewed-by: Alex Deucher Cc: stable@vger.kernel.org Signed-off-by: Dave Airlie --- drivers/gpu/drm/radeon/radeon_device.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/gpu/drm/radeon/radeon_device.c b/drivers/gpu/drm/radeon/radeon_device.c index cec51a5b69dd..49f7cb7e226b 100644 --- a/drivers/gpu/drm/radeon/radeon_device.c +++ b/drivers/gpu/drm/radeon/radeon_device.c @@ -883,6 +883,8 @@ int radeon_suspend_kms(struct drm_device *dev, pm_message_t state) if (dev->switch_power_state == DRM_SWITCH_POWER_OFF) return 0; + drm_kms_helper_poll_disable(dev); + /* turn off display hw */ list_for_each_entry(connector, &dev->mode_config.connector_list, head) { drm_helper_connector_dpms(connector, DRM_MODE_DPMS_OFF); @@ -972,6 +974,8 @@ int radeon_resume_kms(struct drm_device *dev) list_for_each_entry(connector, &dev->mode_config.connector_list, head) { drm_helper_connector_dpms(connector, DRM_MODE_DPMS_ON); } + + drm_kms_helper_poll_enable(dev); return 0; }