drm/i915: make rc6 in sysfs functions conditional

Commit Message

Hunt Xu July 1, 2012, 3:45 a.m. UTC

Commit 0136db586c028f71e7cc21cc183064ff0d5919c8 merges rc6 information
into the power group. However, when compiled with CONFIG_PM not set,
modprobing i915 would taint since power_group_name is defined as NULL.

This patch makes these rc6 in sysfs functions conditional upon the
definition of the CONFIG_PM macro to avoid the above-mentioned problem.

Signed-off-by: Hunt Xu <[e-mail]>
---
 drivers/gpu/drm/i915/i915_sysfs.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

Patch

diff --git a/drivers/gpu/drm/i915/i915_sysfs.c b/drivers/gpu/drm/i915/i915_sysfs.c
index 79f8344..6d4b001 100644
--- a/drivers/gpu/drm/i915/i915_sysfs.c
+++ b/drivers/gpu/drm/i915/i915_sysfs.c
@@ -31,6 +31,7 @@ 
 #include <linux/sysfs.h>
 #include "i915_drv.h"
 
+#ifdef CONFIG_PM
 static u32 calc_residency(struct drm_device *dev, const u32 reg)
 {
 	struct drm_i915_private *dev_priv = dev->dev_private;
@@ -109,3 +110,14 @@  void i915_teardown_sysfs(struct drm_device *dev)
 {
 	sysfs_unmerge_group(&dev->primary->kdev.kobj, &rc6_attr_group);
 }
+#else
+void i915_setup_sysfs(struct drm_device *dev)
+{
+	return;
+}
+
+void i915_teardown_sysfs(struct drm_device *dev)
+{
+	return;
+}
+#endif /* CONFIG_PM */