I am busy bisecting the real cause. Unfortunately, oprofile doesn't work on the laptop, and build time sucks... This how I think the IRQ should work: --- a/drivers/net/b44.c 2007-05-29 09:47:53.000000000 -0700 +++ b/drivers/net/b44.c 2007-05-29 09:49:50.000000000 -0700 @@ -908,9 +908,11 @@ static irqreturn_t b44_interrupt(int irq u32 istat, imask; int handled = 0; - spin_lock(&bp->lock); - istat = br32(bp, B44_ISTAT); + if (istat == 0 || istat == ~0) + return IRQ_NONE; + + spin_lock(&bp->lock); imask = br32(bp, B44_IMASK); /* The interrupt mask register controls which interrupt bits - To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
