linux-kernel - [PATCH] Tables: Restore old behavor to favor 32-bit FADT addresses.

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Message-Id: <6018e562465c35d11cf98f181baedf3b8483e812.1399970899.git.lv.zheng@intel.com>
Date:	Tue, 13 May 2014 16:50:30 +0800
From:	Lv Zheng <lv.zheng@...el.com>
To:	"Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
	Len Brown <len.brown@...el.com>
Cc:	Lv Zheng <lv.zheng@...el.com>, Lv Zheng <zetalog@...il.com>,
	<linux-kernel@...r.kernel.org>, linux-acpi@...r.kernel.org
Subject: [PATCH] Tables: Restore old behavor to favor 32-bit FADT addresses.

We need to find a smarter way to switch to 64-bit FADT addresses according
to the bug report.  This patch reverts Linux to the original behavior.

Buglink: https://bugzilla.kernel.org/show_bug.cgi?id=74021
Reported-by: Oswald Buddenhagen <ossi@....org>
Signed-off-by: Lv Zheng <lv.zheng@...el.com>
Tested-by: Oswald Buddenhagen <ossi@....org>
Cc: <stable@...r.kernel.org> # 3.14.x: 0249ed24: ACPICA: Add option to favor 32-bit FADT addresses
---
 include/acpi/acpixf.h |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/acpi/acpixf.h b/include/acpi/acpixf.h
index 4e3044c..b66b6a8 100644
--- a/include/acpi/acpixf.h
+++ b/include/acpi/acpixf.h
@@ -190,7 +190,7 @@ ACPI_INIT_GLOBAL(u8, acpi_gbl_do_not_use_xsdt, FALSE);
  * some machines have been found to have a corrupted non-zero 64-bit
  * address. Default is FALSE, do not favor the 32-bit addresses.
  */
-ACPI_INIT_GLOBAL(u8, acpi_gbl_use32_bit_fadt_addresses, FALSE);
+ACPI_INIT_GLOBAL(u8, acpi_gbl_use32_bit_fadt_addresses, TRUE);
 
 /*
  * Optionally truncate I/O addresses to 16 bits. Provides compatibility
-- 
1.7.10

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