On Tue, 21 Oct 2014, Oleksij Rempel wrote:

Am 21.10.2014 um 09:27 schrieb Thomas Gleixner:

quoted

On Tue, 21 Oct 2014, Oleksij Rempel wrote:

quoted

 static void icoll_unmask_irq(struct irq_data *d)
 {
-	__raw_writel(BM_ICOLL_INTR_ENABLE,
-			icoll_priv.intr + SET_REG + HW_ICOLL_INTERRUPTn(d->hwirq));
+	mutex_lock(&icoll_lock);

And how's that supposed to work? You certainly did not run this code
with even the simplest debugging options enabled. Not to talk about
lockdep or such.

Are there any check list what debugging options should be enabled?

# ls Documentation | grep -i checklist

Perhaps?