intel_enable_rc6() is used to check if we can compute the RC6 residency
in the sysfs code. Disable this for platforms older than Ironlake.
Signed-off-by: Damien Lespiau <damien.lespiau at intel.com>
---
drivers/gpu/drm/i915/intel_pm.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 2eb1846..0465cd6 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -3154,6 +3154,10 @@ static void valleyview_disable_rps(struct drm_device *dev)
int intel_enable_rc6(const struct drm_device *dev)
{
+ /* No RC6 before Ironlake */
+ if (INTEL_INFO(dev)->gen < 5)
+ return 0;
+
/* Respect the kernel parameter if it is set */
if (i915_enable_rc6 >= 0)
return i915_enable_rc6;
--
1.8.1.4
