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

Dan Williams dan.j.williams at intel.com
Fri Jul 24 19:39:04 PDT 2015


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 at intel.com>
Cc: Jani Nikula <jani.nikula at linux.intel.com>
Cc: intel-gfx at lists.freedesktop.org
Cc: David Airlie <airlied at linux.ie>
Cc: dri-devel at lists.freedesktop.org
Signed-off-by: Dan Williams <dan.j.williams at 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;
 




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