[PATCH] mfd: sec-irq: fix support for devices without irq specified

[Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>]

Add missing check for the case of device without irq specified
in sec_irq_exit() (please note that sec_irq_init() already
correctly handles such devices).

This is needed for Insignal's Exynos4412 based Origen board.

Cc: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Cc: Sangbeom Kim <sbkim73@samsung.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
---
patch is against next-20140804 branch of linux-next kernel

 drivers/mfd/sec-irq.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/mfd/sec-irq.c b/drivers/mfd/sec-irq.c
index f9a5786..b65a7f0 100644
--- a/drivers/mfd/sec-irq.c
+++ b/drivers/mfd/sec-irq.c
@@ -478,5 +478,6 @@ int sec_irq_init(struct sec_pmic_dev *sec_pmic)
 
 void sec_irq_exit(struct sec_pmic_dev *sec_pmic)
 {
-	regmap_del_irq_chip(sec_pmic->irq, sec_pmic->irq_data);
+	if (sec_pmic->irq)
+		regmap_del_irq_chip(sec_pmic->irq, sec_pmic->irq_data);
 }
-- 
1.8.2.3