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Re: [patch] iio: dac: ad5592r: Off by one bug in ad5592r_alloc_channels()

From Jonathan Cameron <jic23@kernel.org>
Newsgroups linux.kernel
Subject Re: [patch] iio: dac: ad5592r: Off by one bug in ad5592r_alloc_channels()
Date 2016-05-01 23:30 +0200
Message-ID <ru76b-86o-29@gated-at.bofh.it> (permalink)
References <rtcAV-3l0-13@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On 29/04/16 10:03, Dan Carpenter wrote:
> The > here should be >= or we go beyond the end for the array.
> 
> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Good spot - marked it to pick up when I am back on the internet soonish....
(though perhaps not when I my computer manages to sneak this lot out!)
> 
> diff --git a/drivers/iio/dac/ad5592r-base.c b/drivers/iio/dac/ad5592r-base.c
> index 948f600..69bde59 100644
> --- a/drivers/iio/dac/ad5592r-base.c
> +++ b/drivers/iio/dac/ad5592r-base.c
> @@ -525,7 +525,7 @@ static int ad5592r_alloc_channels(struct ad5592r_state *st)
>  
>  	device_for_each_child_node(st->dev, child) {
>  		ret = fwnode_property_read_u32(child, "reg", &reg);
> -		if (ret || reg > ARRAY_SIZE(st->channel_modes))
> +		if (ret || reg >= ARRAY_SIZE(st->channel_modes))
>  			continue;
>  
>  		ret = fwnode_property_read_u32(child, "adi,mode", &tmp);
> --
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[patch] iio: dac: ad5592r: Off by one bug in ad5592r_alloc_channels() Dan Carpenter <dan.carpenter@oracle.com> - 2016-04-29 11:10 +0200
  Re: [patch] iio: dac: ad5592r: Off by one bug in  ad5592r_alloc_channels() Jonathan Cameron <jic23@kernel.org> - 2016-05-01 23:30 +0200
    Re: [patch] iio: dac: ad5592r: Off by one bug in  ad5592r_alloc_channels() Jonathan Cameron <jic23@kernel.org> - 2016-05-04 16:50 +0200

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