linux-kernel - [PATCH v2 12/25] i915: switch from acpi_os

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Message-ID: <20150725023904.8664.84461.stgit@dwillia2-desk3.amr.corp.intel.com>
Date:	Fri, 24 Jul 2015 22:39:04 -0400
From:	Dan Williams <dan.j.williams@...el.com>
To:	tglx@...utronix.de, mingo@...nel.org, hpa@...or.com
Cc:	linux-arch@...r.kernel.org, toshi.kani@...com,
	linux-nvdimm@...ts.01.org, David Airlie <airlied@...ux.ie>,
	intel-gfx@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
	Jani Nikula <jani.nikula@...ux.intel.com>,
	dri-devel@...ts.freedesktop.org, rmk+kernel@....linux.org.uk,
	Daniel Vetter <daniel.vetter@...el.com>, hch@....de,
	linux-arm-kernel@...ts.infradead.org
Subject: [PATCH v2 12/25] i915: switch from acpi_os_ioremap to ioremap

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@...el.com>
Cc: Jani Nikula <jani.nikula@...ux.intel.com>
Cc: intel-gfx@...ts.freedesktop.org
Cc: David Airlie <airlied@...ux.ie>
Cc: dri-devel@...ts.freedesktop.org
Signed-off-by: Dan Williams <dan.j.williams@...el.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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