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drm/radeon/kms: disable output polling when suspended

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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 <seth.forshee@canonical.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Seth Forshee 2012-01-31 19:06:25 -06:00 committed by Dave Airlie
parent ebd80b941c
commit 86698c20f7
1 changed files with 4 additions and 0 deletions
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4
drivers/gpu/drm/radeon/radeon_device.c
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@ -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;
}