From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: mingo@redhat.com, akpm@osdl.org, linux-kernel@vger.kernel.org
Subject: [PATCH] x86 reboot: Remove inb_p usage
Date: Sat, 19 Jan 2008 15:44:53 +0000 [thread overview]
Message-ID: <20080119154453.1afddbfb@lxorguk.ukuu.org.uk> (raw)
We are driving a motherboard port so use a 2uS explicit delay at this
point.
Signed-off-by: Alan Cox <alan@redhat.com>
diff -u --new-file --recursive --exclude-from /usr/src/exclude linux.vanilla-2.6.24-rc8-mm1/arch/x86/kernel/reboot.c linux-2.6.24-rc8-mm1/arch/x86/kernel/reboot.c
--- linux.vanilla-2.6.24-rc8-mm1/arch/x86/kernel/reboot.c 2008-01-19 14:47:55.000000000 +0000
+++ linux-2.6.24-rc8-mm1/arch/x86/kernel/reboot.c 2008-01-19 14:53:58.000000000 +0000
@@ -319,9 +319,11 @@
{
int i;
- for (i = 0; i < 0x10000; i++)
- if ((inb_p(0x64) & 0x02) == 0)
+ for (i = 0; i < 0x10000; i++) {
+ if ((inb(0x64) & 0x02) == 0)
break;
+ udelay(2);
+ }
}
void machine_emergency_restart(void)
next reply other threads:[~2008-01-19 15:47 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-19 15:44 Alan Cox [this message]
2008-01-19 17:00 ` Ray Lee
2008-01-19 19:59 ` Alan Cox
2008-01-22 9:55 ` Ingo Molnar
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