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net: stmmac: platform: Fix misleading interrupt error msg 

[ Upstream commit fc191af1bb ]

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>
5.4-rM2-2.2.x-imx-squashed
Markus Fuchs 2020-03-06 17:38:48 +01:00 committed by Greg Kroah-Hartman
parent f96f2c885e
commit b9c9619985
1 changed files with 10 additions and 4 deletions
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14
drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
View File

@ -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);