drm/i915: don't run hsw power well code on !hsw

Dumps annoying noise into the dmesg:

[drm:intel_set_power_well] *ERROR* Timeout enabling power well

Reported-by: Sedat Dilek <sedat.dilek@gmail.com>
Cc: Sedat Dilek <sedat.dilek@gmail.com>
Cc: Paulo Zanoni <paulo.r.zanoni@intel.com>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index bec1f9ffba2d..f024e7dcc2c7 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -4053,6 +4053,9 @@ void intel_set_power_well(struct drm_device *dev, bool enable)
         bool is_enabled, enable_requested;
         uint32_t tmp;
 
+        if (!IS_HASWELL(dev))
+                return;
+
         tmp = I915_READ(HSW_PWR_WELL_DRIVER);
         is_enabled = tmp & HSW_PWR_WELL_STATE;
         enable_requested = tmp & HSW_PWR_WELL_ENABLE;