Re: [IrDA+SMP] Lockup in handle_IRQ_event

From: Andrew Morton (andrewm@uow.edu.au)
Date: Wed Jan 03 2001 - 18:18:46 EST

Marc ZYNGIER wrote:
>
> Hi all,
>
> Having just started playing with IrDA on my dual celeron (Abit "APIC
> error..." BP6), I managed to kill it every single time (NMI watchdog
> in handle_IRQ_event) while connecting to my mobile phone (in fact,
> when closing the connection to the phone. even 'cat /dev/ircomm0' will
> do...). This is perfectly repeatable.
>

Try this:

--- linux-2.4.0-prerelease/net/irda/irqueue.c Tue Nov 21 20:11:22 2000
+++ linux-akpm/net/irda/irqueue.c Thu Jan 4 10:14:10 2001
@@ -436,7 +436,7 @@
 
         /* Release lock */
         if ( hashbin->hb_type & HB_GLOBAL) {
- spin_unlock_irq( &hashbin->hb_mutex[ bin]);
+ spin_unlock_irqrestore( &hashbin->hb_mutex[ bin], flags);
 
         } else if ( hashbin->hb_type & HB_LOCAL) {
                 restore_flags( flags);
-
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This archive was generated by hypermail 2b29 : Sun Jan 07 2001 - 21:00:16 EST