[PATCH] usb: gadget: fsl: Fix a wrong judgment in fsl_udc_probe()

[Tang Bin]

If the function "platform_get_irq()" failed, the negative value
returned will not be detected here, including "-EPROBE_DEFER", which
causes the application to fail to get the correct error message.
Thus it must be fixed.

Signed-off-by: Tang Bin <tang...@cmss.chinamobile.com>
Signed-off-by: Shengju Zhang <zhangshen...@cmss.chinamobile.com>
---
 drivers/usb/gadget/udc/fsl_udc_core.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/usb/gadget/udc/fsl_udc_core.c 
b/drivers/usb/gadget/udc/fsl_udc_core.c
index ec6eda426..60853ad10 100644
--- a/drivers/usb/gadget/udc/fsl_udc_core.c
+++ b/drivers/usb/gadget/udc/fsl_udc_core.c
@@ -2441,8 +2441,8 @@ static int fsl_udc_probe(struct platform_device *pdev)
        udc_controller->max_ep = (dccparams & DCCPARAMS_DEN_MASK) * 2;
 
        udc_controller->irq = platform_get_irq(pdev, 0);
-       if (!udc_controller->irq) {
-               ret = -ENODEV;
+       if (udc_controller->irq <= 0) {
+               ret = udc_controller->irq ? : -ENODEV;
                goto err_iounmap;
        }
 
-- 
2.20.1.windows.1