linux-kernel - Re: [PATCH 4/6 v3] mmc: sdhci-spear: Handle return value of platform_get

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Date:   Fri, 15 Dec 2017 10:17:57 +0100
From:   Ulf Hansson <ulf.hansson@...aro.org>
To:     Arvind Yadav <arvind.yadav.cs@...il.com>
Cc:     Ben Dooks <ben-linux@...ff.org>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Viresh Kumar <vireshk@...nel.org>,
        Maxime Ripard <maxime.ripard@...e-electrons.com>,
        Chen-Yu Tsai <wens@...e.org>,
        Russell King <linux@...linux.org.uk>,
        Carlo Caione <carlo@...one.org>,
        Kevin Hilman <khilman@...libre.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-mmc@...r.kernel.org" <linux-mmc@...r.kernel.org>,
        "open list:ARM/Amlogic Meson..." <linux-amlogic@...ts.infradead.org>
Subject: Re: [PATCH 4/6 v3] mmc: sdhci-spear: Handle return value of platform_get_irq

On 19 November 2017 at 05:52, Arvind Yadav <arvind.yadav.cs@...il.com> wrote:
> platform_get_irq() can fail here and we must check its return value.
>
> Signed-off-by: Arvind Yadav <arvind.yadav.cs@...il.com>

Thanks, applied for next!

Kind regards
Uffe

> ---
> changes in v2 :
>               Add failure case '<= 0' instead of '< 0'. IRQ0 is not valid.
> changes in v3 :
>               return -EINVAL instead of host->irq.
>
>  drivers/mmc/host/sdhci-spear.c | 4 ++++
>  1 file changed, 4 insertions(+)
>
> diff --git a/drivers/mmc/host/sdhci-spear.c b/drivers/mmc/host/sdhci-spear.c
> index 8c0f884..e04485e 100644
> --- a/drivers/mmc/host/sdhci-spear.c
> +++ b/drivers/mmc/host/sdhci-spear.c
> @@ -82,6 +82,10 @@ static int sdhci_probe(struct platform_device *pdev)
>         host->hw_name = "sdhci";
>         host->ops = &sdhci_pltfm_ops;
>         host->irq = platform_get_irq(pdev, 0);
> +       if (host->irq <= 0) {
> +               ret = -EINVAL;
> +               goto err_host;
> +       }
>         host->quirks = SDHCI_QUIRK_BROKEN_ADMA;
>
>         sdhci = sdhci_priv(host);
> --
> 2.7.4
>