[Bug 100718] [BSW][BAT] igt at pm_rpm@basic-rte incomplete

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=100718

--- Comment #8 from Chris Wilson <chris at chris-wilson.co.uk> ---
I have the impression it doesn't approve of us reading VLV_GTLC_PW_STATUS
frequently:

diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index 5f2aeb27aeb7..acb99603b955 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -2246,9 +2246,8 @@ static int vlv_wait_for_gt_wells(struct drm_i915_private
*dev_priv,
         * RC6 transitioning can be delayed up to 2 msec (see
         * valleyview_enable_rps), use 3 msec for safety.
         */
-       err = intel_wait_for_register(dev_priv,
-                                     VLV_GTLC_PW_STATUS, mask, val,
-                                     3);
+       err = wait_for((I915_READ_NOTRACE(VLV_GTLC_PW_STATUS) & mask) == val,
+                      3);
        if (err)
                DRM_ERROR("timeout waiting for GT wells to go %s\n",
                          onoff(wait_for_on));

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