[PATCH net 13/13] net: dwmac-loongson: Perceive zero IRQ as invalid

[Serge Semin]

Linux kernel defines zero IRQ number as invalid in case if IRQ couldn't be
mapped. Fix that for Loongson PCI MAC specific IRQs request procedure.

Fixes: 30bba69d7db4 ("stmmac: pci: Add dwmac support for Loongson")
Signed-off-by: Serge Semin <Sergey.Semin@xxxxxxxxxxxxxxxxxxxx>
---
 drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c
index a25c187d3185..907bdfcc07e9 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c
@@ -127,20 +127,20 @@ static int loongson_dwmac_probe(struct pci_dev *pdev, const struct pci_device_id
 	res.addr = pcim_iomap_table(pdev)[0];
 
 	res.irq = of_irq_get_byname(np, "macirq");
-	if (res.irq < 0) {
+	if (res.irq <= 0) {
 		dev_err(&pdev->dev, "IRQ macirq not found\n");
 		ret = -ENODEV;
 		goto err_disable_msi;
 	}
 
 	res.wol_irq = of_irq_get_byname(np, "eth_wake_irq");
-	if (res.wol_irq < 0) {
+	if (res.wol_irq <= 0) {
 		dev_info(&pdev->dev, "IRQ eth_wake_irq not found, using macirq\n");
 		res.wol_irq = res.irq;
 	}
 
 	res.lpi_irq = of_irq_get_byname(np, "eth_lpi");
-	if (res.lpi_irq < 0) {
+	if (res.lpi_irq <= 0) {
 		dev_err(&pdev->dev, "IRQ eth_lpi not found\n");
 		ret = -ENODEV;
 		goto err_disable_msi;
-- 
2.39.2