linux-kernel - Re: [PATCH] mmc: sdhci-of-arasan: Add NULL check for data field

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Message-ID: <CAPDyKFoWdq+908f18Uz3TPj50M2eDiECC7iLU8UGGEuawCpo1w@mail.gmail.com>
Date:   Mon, 16 May 2022 15:55:18 +0200
From:   Ulf Hansson <ulf.hansson@...aro.org>
To:     Sai Krishna Potthuri <lakshmi.sai.krishna.potthuri@...inx.com>
Cc:     Michal Simek <michal.simek@...inx.com>,
        Adrian Hunter <adrian.hunter@...el.com>,
        linux-kernel@...r.kernel.org, linux-mmc@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, git@...inx.com,
        saikrishna12468@...il.com, sgoud@...inx.com
Subject: Re: [PATCH] mmc: sdhci-of-arasan: Add NULL check for data field

On Thu, 12 May 2022 at 09:20, Sai Krishna Potthuri
<lakshmi.sai.krishna.potthuri@...inx.com> wrote:
>
> Add NULL check for data field retrieved from of_device_get_match_data()
> before dereferencing the data.
> Addresses-coverity: CID 305057:Dereference null return value (NULL_RETURNS)
>
> Signed-off-by: Sai Krishna Potthuri <lakshmi.sai.krishna.potthuri@...inx.com>

Applied for next, thanks!

Kind regards
Uffe


> ---
>  drivers/mmc/host/sdhci-of-arasan.c | 3 +++
>  1 file changed, 3 insertions(+)
>
> diff --git a/drivers/mmc/host/sdhci-of-arasan.c b/drivers/mmc/host/sdhci-of-arasan.c
> index 6a2e5a468424..757801dfc308 100644
> --- a/drivers/mmc/host/sdhci-of-arasan.c
> +++ b/drivers/mmc/host/sdhci-of-arasan.c
> @@ -1577,6 +1577,9 @@ static int sdhci_arasan_probe(struct platform_device *pdev)
>         const struct sdhci_arasan_of_data *data;
>
>         data = of_device_get_match_data(dev);
> +       if (!data)
> +               return -EINVAL;
> +
>         host = sdhci_pltfm_init(pdev, data->pdata, sizeof(*sdhci_arasan));
>
>         if (IS_ERR(host))
> --
> 2.17.1
>