Messages in this thread Patch in this message | | | Date | Tue, 03 Nov 2009 20:10:12 +0100 | From | Roel Kluin <> | Subject | [PATCH] IXP4xx: Ensure index is positive |
| |
The indexes are signed, make sure they are not negative when we read the array elements.
Signed-off-by: Roel Kluin <roel.kluin@gmail.com> --- arch/arm/mach-ixp4xx/common.c | 2 +- arch/arm/mach-ixp4xx/ixp4xx_npe.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/arm/mach-ixp4xx/common.c b/arch/arm/mach-ixp4xx/common.c index cfd52fb..2df77bc 100644 --- a/arch/arm/mach-ixp4xx/common.c +++ b/arch/arm/mach-ixp4xx/common.c @@ -119,7 +119,7 @@ EXPORT_SYMBOL(gpio_to_irq); int irq_to_gpio(int irq) { - int gpio = (irq < 32) ? irq2gpio[irq] : -EINVAL; + int gpio = (irq < 32 && irq >= 0) ? irq2gpio[irq] : -EINVAL; if (gpio == -1) return -EINVAL; diff --git a/arch/arm/mach-ixp4xx/ixp4xx_npe.c b/arch/arm/mach-ixp4xx/ixp4xx_npe.c index 47ac69c..30e1456 100644 --- a/arch/arm/mach-ixp4xx/ixp4xx_npe.c +++ b/arch/arm/mach-ixp4xx/ixp4xx_npe.c @@ -667,7 +667,7 @@ err: struct npe *npe_request(int id) { - if (id < NPE_COUNT) + if (id >= 0 && id < NPE_COUNT) if (npe_tab[id].valid) if (try_module_get(THIS_MODULE)) return &npe_tab[id];
| |