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gpio: grgpio: off by one in grgpio_to_irq()

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"gc->ngpio" is a number between 1 and GRGPIO_MAX_NGPIO.  If "offset" is
GRGPIO_MAX_NGPIO then we're going one step beyond the end of the
priv->lirqs[] array.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Dan Carpenter 2014-12-17 02:53:59 +03:00 committed by Linus Walleij
parent 53e41f554a
commit d3c2155ce5
1 changed files with 1 additions and 1 deletions
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2
drivers/gpio/gpio-grgpio.c
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@ -121,7 +121,7 @@ static int grgpio_to_irq(struct gpio_chip *gc, unsigned offset)
{
struct grgpio_priv *priv = grgpio_gc_to_priv(gc);
if (offset > gc->ngpio)
if (offset >= gc->ngpio)
return -ENXIO;
if (priv->lirqs[offset].index < 0)