From: Paulo Zanoni <paulo.r.zanoni at intel.com>
Otherwise, if the BIOS did anything wrong, our first I915_{READ,WRITE}
will give us "unclaimed regsiter" messages.
Signed-off-by: Paulo Zanoni <paulo.r.zanoni at intel.com>
---
drivers/gpu/drm/i915/i915_dma.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c
index 11c7aa8..505d7eb 100644
--- a/drivers/gpu/drm/i915/i915_dma.c
+++ b/drivers/gpu/drm/i915/i915_dma.c
@@ -1578,6 +1578,10 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags)
/* This must be called before any calls to HAS_PCH_* */
intel_detect_pch(dev);
+ /* This must happen before any I915_{READ,WRITE}: */
+ if (IS_HASWELL(dev))
+ I915_WRITE_NOTRACE(FPGA_DBG, FPGA_DBG_RM_NOCLAIM);
+
intel_irq_init(dev);
intel_gt_init(dev);
--
1.7.10.4
