AuxXxilium/linux_dsm_epyc7002
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[PATCH] x86_64: Reduce number of retries for reset through keyboard controller

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Old code could retry for 10 seconds worst time. Only try it
for one second now.

Suggested by Yinghai Lu

Cc: Yinghai.Lu@amd.com

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Andi Kleen 2005-11-05 17:25:54 +01:00 committed by Linus Torvalds
parent 2b0918758d
commit a6f5deb2be
2 changed files with 2 additions and 2 deletions
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2
arch/x86_64/kernel/reboot.c
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@ -121,7 +121,7 @@ void machine_emergency_restart(void)
/* Could also try the reset bit in the Hammer NB */ /* Could also try the reset bit in the Hammer NB */
switch (reboot_type) { switch (reboot_type) {
case BOOT_KBD: case BOOT_KBD:
for (i=0; i<100; i++) { for (i=0; i<10; i++) {
kb_wait(); kb_wait();
udelay(50); udelay(50);
outb(0xfe,0x64); /* pulse reset low */ outb(0xfe,0x64); /* pulse reset low */

2
include/asm-i386/mach-default/mach_reboot.h
View File

@ -19,7 +19,7 @@ static inline void kb_wait(void)
static inline void mach_reboot(void) static inline void mach_reboot(void)
{ {
int i; int i;
for (i = 0; i < 100; i++) { for (i = 0; i < 10; i++) {
kb_wait(); kb_wait();
udelay(50); udelay(50);
outb(0x60, 0x64); /* write Controller Command Byte */ outb(0x60, 0x64); /* write Controller Command Byte */