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drm/radeon/kms/pm: don't enable pm if there is only on power state

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Just adds overhead when the power state will never change.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Alex Deucher 2010-03-24 11:32:29 -04:00 committed by Dave Airlie
parent 678e7dfa9e
commit 90c3905950
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/radeon/radeon_pm.c
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@ -113,7 +113,7 @@ int radeon_pm_init(struct radeon_device *rdev)
INIT_DELAYED_WORK(&rdev->pm.idle_work, radeon_pm_idle_work_handler);
if (radeon_dynpm != -1 && radeon_dynpm) {
if ((radeon_dynpm != -1 && radeon_dynpm) && (rdev->pm.num_power_states > 1)) {
rdev->pm.state = PM_STATE_PAUSED;
DRM_INFO("radeon: dynamic power management enabled\n");
}