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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];

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