[PATCH] slimbus: qcom: fix error check return value of platform_get_irq()

[cgel.zte at gmail.com]

From: Lv Ruyi <lv.ruyi at zte.com.cn>

platform_get_irq() return negative value on failure, so null check of
ctrl->irq is incorrect. Fix it by comparing whether it is less than zero.

Fixes: ad7fcbc308b0 ("slimbus: qcom: Add Qualcomm Slimbus controller driver")
Reported-by: Zeal Robot <zealci at zte.com.cn>
Signed-off-by: Lv Ruyi <lv.ruyi at zte.com.cn>
---
 drivers/slimbus/qcom-ctrl.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/slimbus/qcom-ctrl.c b/drivers/slimbus/qcom-ctrl.c
index f04b961b96cd..b2f01e155d77 100644
--- a/drivers/slimbus/qcom-ctrl.c
+++ b/drivers/slimbus/qcom-ctrl.c
@@ -510,7 +510,7 @@ static int qcom_slim_probe(struct platform_device *pdev)
 	}
 
 	ctrl->irq = platform_get_irq(pdev, 0);
-	if (!ctrl->irq) {
+	if (ctrl->irq < 0) {
 		dev_err(&pdev->dev, "no slimbus IRQ\n");
 		return -ENODEV;
 	}
-- 
2.25.1