genirq/proc: Use the the accessor to report the effective affinity

If CONFIG_GENERIC_IRQ_EFFECTIVE_AFF_MASK is defined, but that the
interrupt is not single target, the effective affinity reported in
/proc/irq/x/effective_affinity will be empty, which is not the truth.

Instead, use the accessor to report the affinity, which will pick
the right mask.

Signed-off-by: Marc Zyngier <[email protected]>
Signed-off-by: Thomas Gleixner <[email protected]>
Cc: Andrew Lunn <[email protected]>
Cc: James Hogan <[email protected]>
Cc: Jason Cooper <[email protected]>
Cc: Paul Burton <[email protected]>
Cc: Chris Zankel <[email protected]>
Cc: Kevin Cernekee <[email protected]>
Cc: Wei Xu <[email protected]>
Cc: Max Filippov <[email protected]>
Cc: Florian Fainelli <[email protected]>
Cc: Gregory Clement <[email protected]>
Cc: Matt Redfearn <[email protected]>
Cc: Sebastian Hesselbarth <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]

kernel/irq/proc.c

@@ -61,7 +61,7 @@ static int show_irq_affinity(int type, struct seq_file *m)
 	case EFFECTIVE:
 	case EFFECTIVE_LIST:
 #ifdef CONFIG_GENERIC_IRQ_EFFECTIVE_AFF_MASK
-		mask = desc->irq_common_data.effective_affinity;
+		mask = irq_data_get_effective_affinity_mask(&desc->irq_data);
 		break;
 #else
 		return -EINVAL;