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Date: Fri, 28 Jan 2011 14:02:04 +0000
To: "Robert P. J. Day" <rpjday@crashcourse.ca>
Subject: Re: has the i915 "black screen" boot issue returned? [BISECTED]
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diff --git a/include/linux/acpi_io.h b/include/linux/acpi_io.h
index 7180013..42108ab 100644
--- a/include/linux/acpi_io.h
+++ b/include/linux/acpi_io.h
@@ -7,7 +7,7 @@
 static inline void __iomem *acpi_os_ioremap(acpi_physical_address phys,
                                            acpi_size size)
 {
-       return ioremap_cache(phys, size);
+       return ioremap_wc(phys, size);
 }
 
 int acpi_os_map_generic_address(struct acpi_generic_address *addr);