Re: [3.9-rc1] irq 16: nobody cared (was [3.9-rc1] very poor interruptresponses)

From: Jiri Kosina
Date: Mon Mar 18 2013 - 18:04:40 EST

On Mon, 18 Mar 2013, Daniel Vetter wrote:

> Yep, there's a big comment in the irq handler for that chipset that we
> have a gaping race with when using MSI interrupts. Although the comment
> bodly claims that the race is small enough to avoid the dreaded "nobody
> cared" message. Looks like gmbus is good at hitting that race - on newer
> chips it already brought up a similar race in handling pch interrupts.

I see ... will target my focus in that direction, thanks.

> Can you please give the below patch a whirl? It removes the probably race
> msi race avoidance code and replaces it with the same trick Paulo used to
> fix pch irq handling races.

Unfortunately it didn't change anything, the spurious interrupt report is
still there.

Jiri Kosina
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at
Please read the FAQ at