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net: ll_temac: fix error checking of irq_of_parse_and_map()

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[ Upstream commit ef45e8400f ]

Most kernel functions return negative error codes but some irq functions
return zero on error.  In this code irq_of_parse_and_map(), returns zero
and platform_get_irq() returns negative error codes.  We need to handle
both cases appropriately.

Fixes: 8425c41d1e ("net: ll_temac: Extend support to non-device-tree platforms")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Acked-by: Esben Haabendal <esben@geanix.com>
Reviewed-by: Yang Yingliang <yangyingliang@huawei.com>
Reviewed-by: Harini Katakam <harini.katakam@amd.com>
Link: https://lore.kernel.org/r/3d0aef75-06e0-45a5-a2a6-2cc4738d4143@moroto.mountain
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Dan Carpenter 2023-07-31 10:42:32 +03:00 committed by Greg Kroah-Hartman
parent 7928f81443
commit 363c56f971
1 changed files with 8 additions and 4 deletions
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12
drivers/net/ethernet/xilinx/ll_temac_main.c
View file

@ -1481,12 +1481,16 @@ static int temac_probe(struct platform_device *pdev)
}
/* Error handle returned DMA RX and TX interrupts */
if (lp->rx_irq < 0)
return dev_err_probe(&pdev->dev, lp->rx_irq,
if (lp->rx_irq <= 0) {
rc = lp->rx_irq ?: -EINVAL;
return dev_err_probe(&pdev->dev, rc,
"could not get DMA RX irq\n");
if (lp->tx_irq < 0)
return dev_err_probe(&pdev->dev, lp->tx_irq,
}
if (lp->tx_irq <= 0) {
rc = lp->tx_irq ?: -EINVAL;
return dev_err_probe(&pdev->dev, rc,
"could not get DMA TX irq\n");
}
if (temac_np) {
/* Retrieve the MAC address */