[PATCH] drm: cirrus: fix warnings

[Russell King]

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 at arm.linux.org.uk>
---
There is no maintainers entry for this driver, so I don't know who this
should be sent to.

 drivers/gpu/drm/cirrus/cirrus_drv.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/cirrus/cirrus_drv.c b/drivers/gpu/drm/cirrus/cirrus_drv.c
index 08ce520f61a5..4516b052cc67 100644
--- a/drivers/gpu/drm/cirrus/cirrus_drv.c
+++ b/drivers/gpu/drm/cirrus/cirrus_drv.c
@@ -76,6 +76,7 @@ static void cirrus_pci_remove(struct pci_dev *pdev)
 	drm_put_dev(dev);
 }
 
+#ifdef CONFIG_PM_SLEEP
 static int cirrus_pm_suspend(struct device *dev)
 {
 	struct pci_dev *pdev = to_pci_dev(dev);
@@ -110,6 +111,7 @@ static int cirrus_pm_resume(struct device *dev)
 	drm_kms_helper_poll_enable(drm_dev);
 	return 0;
 }
+#endif
 
 static const struct file_operations cirrus_driver_fops = {
 	.owner = THIS_MODULE,
-- 
1.8.3.1