"thread_mask" is an unsigned long.  It's better to use 1UL here so we
can take advantage of the high bits as well.

Signed-off-by: Dan Carpenter <dan.carpen...@oracle.com>

diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index 4c69326..cfe1283 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -1027,7 +1027,7 @@ __setup_irq(unsigned int irq, struct irq_desc *desc, 
struct irqaction *new)
                 * thread_mask assigned. See the loop above which or's
                 * all existing action->thread_mask bits.
                 */
-               new->thread_mask = 1 << ffz(thread_mask);
+               new->thread_mask = 1UL << ffz(thread_mask);
 
        } else if (new->handler == irq_default_primary_handler &&
                   !(desc->irq_data.chip->flags & IRQCHIP_ONESHOT_SAFE)) {
--
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