[PATCH 1/3 v2] mfd: ipaq-micro: Fix platform_get_irq's error checking

[Arvind Yadav]

The platform_get_irq() function returns negative if an error occurs.
zero or positive number on success. platform_get_irq() error checking
for zero is not correct.

Signed-off-by: Arvind Yadav <arvind.yadav...@gmail.com>
---
changes in v2 :
              Add failure case '<= 0' instead of '< 0'. If IRQ0 is not valid.

 drivers/mfd/ipaq-micro.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/mfd/ipaq-micro.c b/drivers/mfd/ipaq-micro.c
index cd762d0..ea729db 100644
--- a/drivers/mfd/ipaq-micro.c
+++ b/drivers/mfd/ipaq-micro.c
@@ -410,8 +410,8 @@ static int __init micro_probe(struct platform_device *pdev)
        micro_reset_comm(micro);
 
        irq = platform_get_irq(pdev, 0);
-       if (!irq)
-               return -EINVAL;
+       if (irq <= 0)
+               return irq;
        ret = devm_request_irq(&pdev->dev, irq, micro_serial_isr,
                               IRQF_SHARED, "ipaq-micro",
                               micro);
-- 
2.7.4