power: supply: cpcap-charger: fix incorrect return value check

Function platform_get_irq_byname() returns a negative error code on
failure, and a zero or positive number on success. However, in function
cpcap_usb_init_irq(), positive IRQ numbers are also taken as error
cases. Use "if (irq < 0)" instead of "if (!irq)" to validate the return
value of platform_get_irq_byname().

Signed-off-by: Pan Bian <bianpan2016@163.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>

diff --git a/drivers/power/supply/cpcap-charger.c b/drivers/power/supply/cpcap-charger.c
index 11a07633de6cd81abb55dc0ce17ae7e8e6691294..e4905bef26637aa567c01ed2cf018dc948a3ecaf 100644 (file)
--- a/drivers/power/supply/cpcap-charger.c
+++ b/drivers/power/supply/cpcap-charger.c
@@ -484,7 +484,7 @@ static int cpcap_usb_init_irq(struct platform_device *pdev,
        int irq, error;
 
        irq = platform_get_irq_byname(pdev, name);
-       if (!irq)
+       if (irq < 0)
                return -ENODEV;
 
        error = devm_request_threaded_irq(ddata->dev, irq, NULL,