RE: [PATCH] x86_64 ioapic: check_timer_pin Don't add_pin_to_irq if it is already there.

["Lu, Yinghai" <yinghai.lu@amd.com>]

-----Original Message-----
From: ebiederm@xmission.com [mailto:ebiederm@xmission.com] 
Sent: Monday, January 08, 2007 2:50 PM
To: Andrew Morton
Cc: Linus Torvalds; Tobias Diedrich; Adrian Bunk; Andi Kleen; Linux
Kernel Mailing List; Lu, Yinghai
Subject: [PATCH] x86_64 ioapic: check_timer_pin Don't add_pin_to_irq if
it is already there.

>Yep.  My oversight.  Here is the trivial patch to fix it.  I don't
>see how we could hit this case but if we are going to allow for it
>we should handle it correctly.

Yes, in your check_timer calling sequence, at that point irq can not be
0.
( remove_irq_to_pin already remove that entry).

Or in check_timer_pin

+	if ((irq != -1) && (irq != 0)) {

==>

+	if (irq != -1) {

YH



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