diff options
| author | Yanchuan Nian <ycnian@gmail.com> | 2013-09-03 21:25:24 -0400 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2013-09-04 01:46:04 -0400 |
| commit | 7752572f18f98ee796e173334b088a1d621d2da4 (patch) | |
| tree | f8999532e0ab341a295ce49c9d8df7970f0f4393 /arch/x86/kernel | |
| parent | 6e4664525b1db28f8c4e1130957f70a94c19213e (diff) | |
x86/irq: Correct comment about i8259 initialization
0x30-0x3f have been used for ISA interrupts on i386 as well
since 5 years ago, but old comments about i8259 initialization
were still referring to the old i386 usage of this port range.
Signed-off-by: Yanchuan Nian <ycnian@gmail.com>
Cc: yinghai@kernel.org
Cc: pavel@suse.cz
Link: http://lkml.kernel.org/r/1378257924-29446-1-git-send-email-ycnian@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/kernel')
| -rw-r--r-- | arch/x86/kernel/i8259.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/arch/x86/kernel/i8259.c b/arch/x86/kernel/i8259.c index 9a5c460404dc..2e977b5d61dd 100644 --- a/arch/x86/kernel/i8259.c +++ b/arch/x86/kernel/i8259.c | |||
| @@ -312,8 +312,7 @@ static void init_8259A(int auto_eoi) | |||
| 312 | */ | 312 | */ |
| 313 | outb_pic(0x11, PIC_MASTER_CMD); /* ICW1: select 8259A-1 init */ | 313 | outb_pic(0x11, PIC_MASTER_CMD); /* ICW1: select 8259A-1 init */ |
| 314 | 314 | ||
| 315 | /* ICW2: 8259A-1 IR0-7 mapped to 0x30-0x37 on x86-64, | 315 | /* ICW2: 8259A-1 IR0-7 mapped to 0x30-0x37 */ |
| 316 | to 0x20-0x27 on i386 */ | ||
| 317 | outb_pic(IRQ0_VECTOR, PIC_MASTER_IMR); | 316 | outb_pic(IRQ0_VECTOR, PIC_MASTER_IMR); |
| 318 | 317 | ||
| 319 | /* 8259A-1 (the master) has a slave on IR2 */ | 318 | /* 8259A-1 (the master) has a slave on IR2 */ |