[PATCH] drivers/misc: Fix IRQ check

[cgel.zte at gmail.com]

From: Minghao Chi (CGEL ZTE) <chi.minghao at zte.com.cn>

platform_get_irq() returns negative error number instead 0 on failure.
Fix the check of return value to catch errors correctly.

Reported-by: Zeal Robot <zealci at zte.com.cn>
Signed-off-by: Minghao Chi (CGEL ZTE) <chi.minghao at zte.com.cn>
---
 drivers/misc/atmel-ssc.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/misc/atmel-ssc.c b/drivers/misc/atmel-ssc.c
index d6cd5537126c..69f9b0336410 100644
--- a/drivers/misc/atmel-ssc.c
+++ b/drivers/misc/atmel-ssc.c
@@ -232,9 +232,9 @@ static int ssc_probe(struct platform_device *pdev)
 	clk_disable_unprepare(ssc->clk);
 
 	ssc->irq = platform_get_irq(pdev, 0);
-	if (!ssc->irq) {
+	if (ssc->irq < 0) {
 		dev_dbg(&pdev->dev, "could not get irq\n");
-		return -ENXIO;
+		return ssc->irq;
 	}
 
 	mutex_lock(&user_lock);
-- 
2.25.1