net: lan966x: fix checking for return value of platform_get_irq_byname()

The platform_get_irq_byname() returns non-zero IRQ number
or negative error number. "if (irq)" always true, chang it
to "if (irq > 0)"

Signed-off-by: Li Qiong <liqiong@nfschina.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_main.c b/drivers/net/ethernet/microchip/lan966x/lan966x_main.c
index 1d6e3b6..d928b75 100644 (file)
--- a/drivers/net/ethernet/microchip/lan966x/lan966x_main.c
+++ b/drivers/net/ethernet/microchip/lan966x/lan966x_main.c
@@ -710,7 +710,7 @@ static void lan966x_cleanup_ports(struct lan966x *lan966x)
        disable_irq(lan966x->xtr_irq);
        lan966x->xtr_irq = -ENXIO;
 
-       if (lan966x->ana_irq) {
+       if (lan966x->ana_irq > 0) {
                disable_irq(lan966x->ana_irq);
                lan966x->ana_irq = -ENXIO;
        }
@@ -718,10 +718,10 @@ static void lan966x_cleanup_ports(struct lan966x *lan966x)
        if (lan966x->fdma)
                devm_free_irq(lan966x->dev, lan966x->fdma_irq, lan966x);
 
-       if (lan966x->ptp_irq)
+       if (lan966x->ptp_irq > 0)
                devm_free_irq(lan966x->dev, lan966x->ptp_irq, lan966x);
 
-       if (lan966x->ptp_ext_irq)
+       if (lan966x->ptp_ext_irq > 0)
                devm_free_irq(lan966x->dev, lan966x->ptp_ext_irq, lan966x);
 }
 
@@ -1049,7 +1049,7 @@ static int lan966x_probe(struct platform_device *pdev)
        }
 
        lan966x->ana_irq = platform_get_irq_byname(pdev, "ana");
-       if (lan966x->ana_irq) {
+       if (lan966x->ana_irq > 0) {
                err = devm_request_threaded_irq(&pdev->dev, lan966x->ana_irq, NULL,
                                                lan966x_ana_irq_handler, IRQF_ONESHOT,
                                                "ana irq", lan966x);