Regular nightly randconfig build testing discovered these warnings:
drivers/gpu/drm/cirrus/cirrus_drv.c:79:12: warning: 'cirrus_pm_suspend' defined but not used [-Wunused-function]
drivers/gpu/drm/cirrus/cirrus_drv.c:96:12: warning: 'cirrus_pm_resume' defined but not used [-Wunused-function]
Fix these by adding the same condition that SET_SYSTEM_SLEEP_PM_OPS()
uses.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Dave Airlie <airlied@redhat.com>
        drm_put_dev(dev);
 }
 
+#ifdef CONFIG_PM_SLEEP
 static int cirrus_pm_suspend(struct device *dev)
 {
        struct pci_dev *pdev = to_pci_dev(dev);
        drm_kms_helper_poll_enable(drm_dev);
        return 0;
 }
+#endif
 
 static const struct file_operations cirrus_driver_fops = {
        .owner = THIS_MODULE,