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From: Jonathan Cameron <jic23@kernel.org>
To: Fabrice Gasnier <fabrice.gasnier@st.com>
Cc: <linux-arm-kernel@lists.infradead.org>,
	<linux-kernel@vger.kernel.org>, <mcoquelin.stm32@gmail.com>,
	<alexandre.torgue@st.com>, <linux-iio@vger.kernel.org>,
	<lars@metafoo.de>, <knaack.h@gmx.de>, <pmeerw@pmeerw.net>,
	<benjamin.gaignard@linaro.org>, <arnaud.pouliquen@st.com>
Subject: Re: [PATCH 6/7] iio: adc: stm32-dfsdm: add check on max filter id
Date: Sat, 28 Apr 2018 16:07:06 +0100	[thread overview]
Message-ID: <20180428160706.2aafad5b@archlinux> (raw)
In-Reply-To: <1519390261-25453-7-git-send-email-fabrice.gasnier@st.com>

On Fri, 23 Feb 2018 13:51:00 +0100
Fabrice Gasnier <fabrice.gasnier@st.com> wrote:

> reg property should be checked against number of available filters.
> BTW, dfsdm->num_fls wasn't used. But it can be used for this purpose.
> This prevents using data out of allocated dfsdm->fl_list array.
> 
> Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Applied to the togreg branch of iio.git and pushed out as testing for
the autobuilders to play with it.

Thanks,

Jonathan

> ---
>  drivers/iio/adc/stm32-dfsdm-adc.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/iio/adc/stm32-dfsdm-adc.c b/drivers/iio/adc/stm32-dfsdm-adc.c
> index 57bcb45..1b78bec 100644
> --- a/drivers/iio/adc/stm32-dfsdm-adc.c
> +++ b/drivers/iio/adc/stm32-dfsdm-adc.c
> @@ -1111,8 +1111,8 @@ static int stm32_dfsdm_adc_probe(struct platform_device *pdev)
>  	platform_set_drvdata(pdev, adc);
>  
>  	ret = of_property_read_u32(dev->of_node, "reg", &adc->fl_id);
> -	if (ret != 0) {
> -		dev_err(dev, "Missing reg property\n");
> +	if (ret != 0 || adc->fl_id >= adc->dfsdm->num_fls) {
> +		dev_err(dev, "Missing or bad reg property\n");
>  		return -EINVAL;
>  	}
>  

  reply	other threads:[~2018-04-28 15:08 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-02-23 12:50 [PATCH 0/7] iio: adc: stm32-dfsdm: misc fixes and improvements Fabrice Gasnier
2018-02-23 12:50 ` [PATCH 1/7] iio: adc: stm32-dfsdm: fix compatible data use Fabrice Gasnier
2018-02-24 12:56   ` Jonathan Cameron
2018-02-23 12:50 ` [PATCH 2/7] iio: adc: stm32-dfsdm: fix call to stop channel Fabrice Gasnier
2018-02-24 12:57   ` Jonathan Cameron
2018-02-23 12:50 ` [PATCH 3/7] iio: adc: stm32-dfsdm: fix clock source selection Fabrice Gasnier
2018-02-24 12:59   ` Jonathan Cameron
2018-02-23 12:50 ` [PATCH 4/7] iio: adc: stm32-dfsdm: fix multiple channel initialization Fabrice Gasnier
2018-02-24 13:01   ` Jonathan Cameron
2018-02-23 12:50 ` [PATCH 5/7] iio: adc: stm32-dfsdm: misc style improvements and fixes Fabrice Gasnier
2018-02-24 13:03   ` Jonathan Cameron
2018-02-27  8:21     ` Fabrice Gasnier
2018-03-03 15:09       ` Jonathan Cameron
2018-04-23  7:48     ` Fabrice Gasnier
2018-04-28 14:52       ` Jonathan Cameron
2018-02-23 12:51 ` [PATCH 6/7] iio: adc: stm32-dfsdm: add check on max filter id Fabrice Gasnier
2018-04-28 15:07   ` Jonathan Cameron [this message]
2018-02-23 12:51 ` [PATCH 7/7] iio: adc: stm32-dfsdm: add check on spi-max-frequency Fabrice Gasnier
2018-04-28 15:07   ` Jonathan Cameron
2018-02-23 13:49 ` [PATCH 0/7] iio: adc: stm32-dfsdm: misc fixes and improvements Arnaud Pouliquen

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