diff options
| author | Vladimir Zapolskiy <vz@mleia.com> | 2016-12-05 04:47:10 +0300 |
|---|---|---|
| committer | Boris Brezillon <boris.brezillon@free-electrons.com> | 2017-01-04 22:50:18 +0300 |
| commit | cf9e1672a66c49ed8903c01b4c380a2f2dc91b40 (patch) | |
| tree | 4c0deece9de90c114e184dc97ccc4ae92702e1ad /drivers | |
| parent | 8043d25b3c0fa0a8f531333707f682f03b6febdb (diff) | |
| download | linux-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')
| -rw-r--r-- | drivers/mtd/nand/lpc32xx_mlc.c | 2 |
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; |