net: stmmac: platform: Fix misleading interrupt error msg

[ Upstream commit d4026c9474b9f5cc9437dd560f7ca54e261d4d75 ]

Not every stmmac based platform makes use of the eth_wake_irq or eth_lpi
interrupts. Use the platform_get_irq_byname_optional variant for these
interrupts, so no error message is displayed, if they can't be found.
Rather print an information to hint something might be wrong to assist
debugging on platforms which use these interrupts.

Signed-off-by: Markus Fuchs <mklntf@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
index 5150551c28be352da32d9af1e9b08102afbfccdb..508325cc105d59c7415b9ab7406a2abd5befccbc 100644 (file)
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
@@ -663,16 +663,22 @@ int stmmac_get_platform_resources(struct platform_device *pdev,
         * In case the wake up interrupt is not passed from the platform
         * so the driver will continue to use the mac irq (ndev->irq)
         */
-       stmmac_res->wol_irq = platform_get_irq_byname(pdev, "eth_wake_irq");
+       stmmac_res->wol_irq =
+               platform_get_irq_byname_optional(pdev, "eth_wake_irq");
        if (stmmac_res->wol_irq < 0) {
                if (stmmac_res->wol_irq == -EPROBE_DEFER)
                        return -EPROBE_DEFER;
+               dev_info(&pdev->dev, "IRQ eth_wake_irq not found\n");
                stmmac_res->wol_irq = stmmac_res->irq;
        }
 
-       stmmac_res->lpi_irq = platform_get_irq_byname(pdev, "eth_lpi");
-       if (stmmac_res->lpi_irq == -EPROBE_DEFER)
-               return -EPROBE_DEFER;
+       stmmac_res->lpi_irq =
+               platform_get_irq_byname_optional(pdev, "eth_lpi");
+       if (stmmac_res->lpi_irq < 0) {
+               if (stmmac_res->lpi_irq == -EPROBE_DEFER)
+                       return -EPROBE_DEFER;
+               dev_info(&pdev->dev, "IRQ eth_lpi not found\n");
+       }
 
        res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
        stmmac_res->addr = devm_ioremap_resource(&pdev->dev, res);