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authorVladimir Zapolskiy <vz@mleia.com>2016-12-05 04:47:10 +0300
committerBoris Brezillon <boris.brezillon@free-electrons.com>2017-01-04 22:50:18 +0300
commitcf9e1672a66c49ed8903c01b4c380a2f2dc91b40 (patch)
tree4c0deece9de90c114e184dc97ccc4ae92702e1ad /drivers/mtd
parent8043d25b3c0fa0a8f531333707f682f03b6febdb (diff)
downloadlinux-cf9e1672a66c49ed8903c01b4c380a2f2dc91b40.tar.xz
mtd: nand: lpc32xx: fix invalid error handling of a requested irq
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. Fixes: 8cb17b5ed017 ("irqchip: Add LPC32xx interrupt controller driver") Cc: stable@kernel.org # v4.7+ Signed-off-by: Vladimir Zapolskiy <vz@mleia.com> Acked-by: Sylvain Lemieux <slemieux.tyco@gmail.com> Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Diffstat (limited to 'drivers/mtd')
-rw-r--r--drivers/mtd/nand/lpc32xx_mlc.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/mtd/nand/lpc32xx_mlc.c b/drivers/mtd/nand/lpc32xx_mlc.c
index 5553a5d9efd1..846a66c1b133 100644
--- a/drivers/mtd/nand/lpc32xx_mlc.c
+++ b/drivers/mtd/nand/lpc32xx_mlc.c
@@ -775,7 +775,7 @@ 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;