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net: lpc_eth: remove irq > NR_IRQS check from probe() 

If the driver is used on an ARM platform with SPARSE_IRQ defined,
semantics of NR_IRQS is different (minimal value of virtual irqs) and
by default it is set to 16, see arch/arm/include/asm/irq.h.

This value may be less than the actual number of virtual irqs, which
may break the driver initialization. The check removal allows to use
the driver on such a platform, and, if irq controller driver works
correctly, the check is not needed on legacy platforms.

Fixes a runtime problem:

    lpc-eth 31060000.ethernet: error getting resources.
    lpc_eth: lpc-eth: not found (-6).

Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Vladimir Zapolskiy 2015-12-02 08:12:13 +02:00 committed by David S. Miller
parent 4eaf3b84f2
commit 39198ec987
1 changed files with 1 additions and 1 deletions
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2
drivers/net/ethernet/nxp/lpc_eth.c
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@ -1326,7 +1326,7 @@ static int lpc_eth_drv_probe(struct platform_device *pdev)
/* Get platform resources */
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
irq = platform_get_irq(pdev, 0);
if ((!res) || (irq < 0) || (irq >= NR_IRQS)) {
if (!res || irq < 0) {
dev_err(&pdev->dev, "error getting resources.\n");
ret = -ENXIO;
goto err_exit;