From: Paulo Zanoni <paulo.r.zanoni at intel.com>
Otherwise, if the BIOS did anything wrong, our first I915_{WRITE,READ}
will give us "unclaimed register" messages.
V2: Even earlier.
Bugzilla: http://bugs.freedesktop.org/show_bug.cgi?id=58897
Reviewed-by: Ben Widawsky <ben at bwidawsk.net>
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 4fa6beb..6d8672e 100644
--- a/drivers/gpu/drm/i915/i915_dma.c
+++ b/drivers/gpu/drm/i915/i915_dma.c
@@ -1542,6 +1542,10 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags)
goto put_gmch;
}
+ /* This must happen before any I915_{READ,WRITE}: */
+ if (IS_HASWELL(dev))
+ I915_WRITE_NOTRACE(FPGA_DBG, FPGA_DBG_RM_NOCLAIM);
+
aperture_size = dev_priv->gtt.mappable_end;
dev_priv->gtt.mappable =
--
1.7.10.4
