ia64: iosapic: Remove redundant mask from ack()

The core code calls mask_ack() which calls irq_ack() and irq_mask()
for the case where an interrupt is disabled and marked pending. That
seems to be a leftover from the old __do_IRQ() mode.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

1 files changed, 0 insertions, 9 deletions

diff --git a/arch/ia64/kernel/iosapic.c b/arch/ia64/kernel/iosapic.c
index 858a995f3d3b..920983545ad6 100644
--- a/arch/ia64/kernel/iosapic.c
+++ b/arch/ia64/kernel/iosapic.c
@@ -450,18 +450,9 @@ static void
 iosapic_ack_edge_irq (struct irq_data *data)
 {
         unsigned int irq = data->irq;
-        struct irq_desc *idesc = irq_desc + irq;
 
         irq_complete_move(irq);
         move_native_irq(irq);
-        /*
-         * Once we have recorded IRQ_PENDING already, we can mask the
-         * interrupt for real. This prevents IRQ storms from unhandled
-         * devices.
-         */
-        if ((idesc->status & (IRQ_PENDING|IRQ_DISABLED)) ==
-            (IRQ_PENDING|IRQ_DISABLED))
-                mask_irq(data);
 }
 
 #define iosapic_enable_edge_irq         unmask_irq