[PATCH] irq: call also chip->irq_mask from irq_disable

[Tero Kristo <t-kristo@ti.com>]

Current implementation of the irq_disable only calls chip->irq_disable.
This fails to disable interrupt on some chip implementations, as there
are two alternative chip specific functions for this task,
chip->irq_disable and chip->irq_mask. Added alternative path for
chip->irq_disable also.

Signed-off-by: Tero Kristo <t-kristo@ti.com>
---
 kernel/irq/chip.c |    7 ++++---
 1 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c
index d5a3009..15597f1 100644
--- a/kernel/irq/chip.c
+++ b/kernel/irq/chip.c
@@ -198,10 +198,11 @@ void irq_enable(struct irq_desc *desc)
 void irq_disable(struct irq_desc *desc)
 {
 	irq_state_set_disabled(desc);
-	if (desc->irq_data.chip->irq_disable) {
+	if (desc->irq_data.chip->irq_disable)
 		desc->irq_data.chip->irq_disable(&desc->irq_data);
-		irq_state_set_masked(desc);
-	}
+	else
+		desc->irq_data.chip->irq_mask(&desc->irq_data);
+	irq_state_set_masked(desc);
 }
 
 static inline void mask_ack_irq(struct irq_desc *desc)
-- 
1.7.4.1


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