um: Add irq chip um/mask handlers

These handlers are not optional and need in our case
dummy implementions to avoid NULL pointer bugs within
the irq core code.

Reported-and-tested-by: Toralf Foester <toralf.foerster@gmx.de>
Signed-off-by: Richard Weinberger <richard@nod.at>

1 files changed, 4 insertions, 0 deletions

diff --git a/arch/um/kernel/irq.c b/arch/um/kernel/irq.c
index 36e12f0cefd5..1d8505b1e290 100644
--- a/arch/um/kernel/irq.c
+++ b/arch/um/kernel/irq.c
@@ -337,6 +337,8 @@ static struct irq_chip normal_irq_type = {
         .irq_disable = dummy,
         .irq_enable = dummy,
         .irq_ack = dummy,
+        .irq_mask = dummy,
+        .irq_unmask = dummy,
 };
 
 static struct irq_chip SIGVTALRM_irq_type = {
@@ -344,6 +346,8 @@ static struct irq_chip SIGVTALRM_irq_type = {
         .irq_disable = dummy,
         .irq_enable = dummy,
         .irq_ack = dummy,
+        .irq_mask = dummy,
+        .irq_unmask = dummy,
 };
 
 void __init init_IRQ(void)