From mboxrd@z Thu Jan 1 00:00:00 1970 From: vz@mleia.com (Vladimir Zapolskiy) Date: Mon, 5 Dec 2016 03:47:10 +0200 Subject: [PATCH] mtd: nand: lpc32xx: fix invalid error handling of a requested irq Message-ID: <20161205014710.2015-1-vz@mleia.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Semantics of NR_IRQS is different on machines with SPARSE_IRQ option disabled or enabled, in the latter case IRQs are allocated starting at least from the value specified by NR_IRQS and going upwards, so the check of (irq >= NR_IRQ) to decide about an error code returned by platform_get_irq() is completely invalid, don't attempt to overrule irq subsystem in the driver. The change fixes LPC32xx NAND MLC driver initialization on boot. Signed-off-by: Vladimir Zapolskiy --- drivers/mtd/nand/lpc32xx_mlc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/mtd/nand/lpc32xx_mlc.c b/drivers/mtd/nand/lpc32xx_mlc.c index 8523881..bc6e49a 100644 --- a/drivers/mtd/nand/lpc32xx_mlc.c +++ b/drivers/mtd/nand/lpc32xx_mlc.c @@ -776,7 +776,7 @@ static int lpc32xx_nand_probe(struct platform_device *pdev) init_completion(&host->comp_controller); host->irq = platform_get_irq(pdev, 0); - if ((host->irq < 0) || (host->irq >= NR_IRQS)) { + if (host->irq < 0) { dev_err(&pdev->dev, "failed to get platform irq\n"); res = -EINVAL; goto err_exit3; -- 2.10.2