linux-kernel - [PATCH] x86, acpi: Remove out-of-date comment of __acpi_map

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Message-ID: <51DDA677.9000102@gmail.com>
Date:	Thu, 11 Jul 2013 02:22:47 +0800
From:	Zhang Yanfei <zhangyanfei.yes@...il.com>
To:	len.brown@...el.com, pavel@....cz, rjw@...k.pl,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: [PATCH] x86, acpi: Remove out-of-date comment of __acpi_map_table

From: Zhang Yanfei <zhangyanfei@...fujitsu.com>

The implementation of function __acpi_map_table() has been changed
long time ago, and now it directly invokes early_ioremap() to setup
the temporarily acpi table mappings. So remove its out-of-date
comment.

Signed-off-by: Zhang Yanfei <zhangyanfei@...fujitsu.com>
---
 arch/x86/kernel/acpi/boot.c |   13 +------------
 1 files changed, 1 insertions(+), 12 deletions(-)

diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c
index d81a972..bac8b5b 100644
--- a/arch/x86/kernel/acpi/boot.c
+++ b/arch/x86/kernel/acpi/boot.c
@@ -140,18 +140,6 @@ static u32 irq_to_gsi(int irq)
 	return gsi;
 }
 
-/*
- * Temporarily use the virtual area starting from FIX_IO_APIC_BASE_END,
- * to map the target physical address. The problem is that set_fixmap()
- * provides a single page, and it is possible that the page is not
- * sufficient.
- * By using this area, we can map up to MAX_IO_APICS pages temporarily,
- * i.e. until the next __va_range() call.
- *
- * Important Safety Note:  The fixed I/O APIC page numbers are *subtracted*
- * from the fixed base.  That's why we start at FIX_IO_APIC_BASE_END and
- * count idx down while incrementing the phys address.
- */
 char *__init __acpi_map_table(unsigned long phys, unsigned long size)
 {
 
@@ -160,6 +148,7 @@ char *__init __acpi_map_table(unsigned long phys, unsigned long size)
 
 	return early_ioremap(phys, size);
 }
+
 void __init __acpi_unmap_table(char *map, unsigned long size)
 {
 	if (!map || !size)
-- 
1.7.1
--
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