diff options
Diffstat (limited to 'arch/x86/boot/a20.c')
| -rw-r--r-- | arch/x86/boot/a20.c | 14 |
1 files changed, 6 insertions, 8 deletions
diff --git a/arch/x86/boot/a20.c b/arch/x86/boot/a20.c index 64a31a6d751a..bda042933a05 100644 --- a/arch/x86/boot/a20.c +++ b/arch/x86/boot/a20.c @@ -1,12 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0-only /* -*- linux-c -*- ------------------------------------------------------- * * * Copyright (C) 1991, 1992 Linus Torvalds * Copyright 2007-2008 rPath, Inc. - All Rights Reserved * Copyright 2009 Intel Corporation; author H. Peter Anvin * - * This file is part of the Linux kernel, and is made available under - * the terms of the GNU General Public License version 2. - * * ----------------------------------------------------------------------- */ /* @@ -137,29 +135,29 @@ int enable_a20(void) (legacy free, etc.) */ if (a20_test_short()) return 0; - + /* Next, try the BIOS (INT 0x15, AX=0x2401) */ enable_a20_bios(); 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; } - + /* Finally, try enabling the "fast A20 gate" */ enable_a20_fast(); if (a20_test_long()) return 0; } - + return -1; } |