linux-kernel - [PATCH] Enable A20 gate

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Message-ID: <CANymLzXWFy8N6cthuU7U6oywURFSoqeT4RnYvcxSrkM8bn7nMw@mail.gmail.com>
Date:	Tue, 7 May 2013 13:41:32 +0500
From:	Syed Salman Mansoor <syed.salman.mansoor@...il.com>
To:	hpa@...or.com, tglx@...utronix.de, mingo@...hat.com
Cc:	x86@...nel.org, linux-kernel@...r.kernel.org,
	Syed Salman Mansoor <syed.salman.mansoor@...il.com>
Subject: [PATCH] Enable A20 gate

>From a5e4cd6cb1956d288b5a001f60699dc8b5528963 Mon Sep 17 00:00:00 2001
From: Syed Salman Mansoor <syed.salman.mansoor@...il.com>
Date: Tue, 7 May 2013 12:49:24 +0500
Subject: [PATCH] Enable A20 gate
 This is a patch to the a20.c file that fixes following
warnings/errors found by the checkpatch.pl tool
 i)  WARNING: please, no spaces at the start of a line
 ii) WARNING: suspect code indent for conditional statements
 iii) ERROR: trailing whitespace
Signed-off-by: Syed Salman Mansoor <syed.salman.mansoor@...il.com>

---
 arch/x86/boot/a20.c |   46 +++++++++++++++++++++++-----------------------
 1 files changed, 23 insertions(+), 23 deletions(-)

diff --git a/arch/x86/boot/a20.c b/arch/x86/boot/a20.c
index 64a31a6..911d729 100644
--- a/arch/x86/boot/a20.c
+++ b/arch/x86/boot/a20.c
@@ -129,37 +129,37 @@ static void enable_a20_fast(void)

 int enable_a20(void)
 {
-       int loops = A20_ENABLE_LOOPS;
-       int kbc_err;
+ int loops = A20_ENABLE_LOOPS;
+ int kbc_err;

-       while (loops--) {
-       /* First, check to see if A20 is already enabled
+ while (loops--) {
+ /* First, check to see if A20 is already enabled
   (legacy free, etc.) */
-       if (a20_test_short())
-       return 0;
-
+ if (a20_test_short())
+ return 0;
+
        /* Next, try the BIOS (INT 0x15, AX=0x2401) */
        enable_a20_bios();
-       if (a20_test_short())
-       return 0;
-
+ if (a20_test_short())
+ return 0;
+
        /* Try enabling A20 through the keyboard controller */
        kbc_err = empty_8042();

-       if (a20_test_short())
-       return 0; /* BIOS worked, but with delayed reaction */
-
-       if (!kbc_err) {
-       enable_a20_kbc();
-       if (a20_test_long())
-       return 0;
+ if (a20_test_short())
+ return 0; /* BIOS worked, but with delayed reaction */
+
+ if (!kbc_err) {
+ enable_a20_kbc();
+ if (a20_test_long())
+ return 0;
        }
-
+
        /* Finally, try enabling the "fast A20 gate" */
        enable_a20_fast();
-       if (a20_test_long())
-       return 0;
-       }
-
-       return -1;
+ if (a20_test_long())
+ return 0;
+ }
+
+ return -1;
 }
--
1.7.2.5

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