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net: stmmac: platform: Fix misleading interrupt error msg 

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>
This commit is contained in:
Markus Fuchs 2020-03-06 17:38:48 +01:00 committed by David S. Miller
parent 13d0f7b814
commit fc191af1bb
1 changed files with 10 additions and 4 deletions
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14
drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
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@ -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);