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drm/i915: Use consistent mappings for OpRegion between ACPI and i915 

The opregion is a shared memory region between ACPI and the graphics
driver. As the ACPI mapping has been changed to cachable in commit
6d5bbf00d2, mapping the intel opregion
non-cachable now fails. As no bus-master hardware is involved in the
opregion, cachable map should do no harm.

Tested on a Fujitsu Lifebook P8010.

Signed-off-by: Michael Karcher <kernel@mkarcher.dialup.fu-berlin.de>
[ickle: convert to acpi_os_ioremap for consistency]
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Michael Karcher 2011-01-23 18:17:17 +00:00 committed by Chris Wilson
parent 8a327f23e2
commit b705120e41
1 changed files with 2 additions and 1 deletions
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3
drivers/gpu/drm/i915/intel_opregion.c
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@ -26,6 +26,7 @@
*/
#include <linux/acpi.h>
#include <linux/acpi_io.h>
#include <acpi/video.h>
#include "drmP.h"
@ -476,7 +477,7 @@ int intel_opregion_setup(struct drm_device *dev)
return -ENOTSUPP;
}
base = ioremap(asls, OPREGION_SIZE);
base = acpi_os_ioremap(asls, OPREGION_SIZE);
if (!base)
return -ENOMEM;