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drm/nouveau/pm: fix oops if chipset has no pm support at all

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Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Ben Skeggs 2012-03-07 14:18:49 +10:00
parent 4489b9835a
commit c11dd0da52
1 changed files with 5 additions and 3 deletions
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8
drivers/gpu/drm/nouveau/nouveau_pm.c
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@ -284,9 +284,11 @@ nouveau_pm_perflvl_get(struct drm_device *dev, struct nouveau_pm_level *perflvl)
memset(perflvl, 0, sizeof(*perflvl));
ret = pm->clocks_get(dev, perflvl);
if (ret)
return ret;
if (pm->clocks_get) {
ret = pm->clocks_get(dev, perflvl);
if (ret)
return ret;
}
if (pm->voltage.supported && pm->voltage_get) {
ret = pm->voltage_get(dev);