[PATCH v2 12/25] i915: switch from acpi_os_ioremap to ioremap

Dan Williams
2015-07-25T02:44:49Z

acpi_os_ioremap uses cached mappings, however it appears that i915
wants to read dynamic platform state. Switch to ioremap() to prevent it
reading stale state from cache.

Cc: Daniel Vetter <daniel.vetter@intel.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: intel-gfx@lists.freedesktop.org
Cc: David Airlie <airlied@linux.ie>
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
---
drivers/gpu/drm/i915/intel_opregion.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/intel_opregion.c b/drivers/gpu/drm/i915/intel_opregion.c
index 481337436f72..16ba7c67410d 100644
--- a/drivers/gpu/drm/i915/intel_opregion.c
+++ b/drivers/gpu/drm/i915/intel_opregion.c
@@ -863,7 +863,7 @@ int intel_opregion_setup(struct drm_device *dev)
INIT_WORK(&opregion->asle_work, asle_work);
#endif

- base = acpi_os_ioremap(asls, OPREGION_SIZE);
+ base = ioremap(asls, OPREGION_SIZE);
if (!base)
return -ENOMEM;