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

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Date:   Mon, 20 Nov 2017 12:15:13 +0530
From:   Viresh Kumar <viresh.kumar@...aro.org>
To:     Arvind Yadav <arvind.yadav.cs@...il.com>
Cc:     ben-linux@...ff.org, ulf.hansson@...aro.org,
        adrian.hunter@...el.com, vireshk@...nel.org,
        maxime.ripard@...e-electrons.com, wens@...e.org,
        linux@...linux.org.uk, carlo@...one.org, khilman@...libre.com,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-mmc@...r.kernel.org, linux-amlogic@...ts.infradead.org
Subject: Re: [PATCH 4/6 v3] mmc: sdhci-spear: Handle return value of
 platform_get_irq

On 19-11-17, 10:22, Arvind Yadav wrote:
> platform_get_irq() can fail here and we must check its return value.
> 
> Signed-off-by: Arvind Yadav <arvind.yadav.cs@...il.com>
> ---
> 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);

Hope this is the last one to Ack :)

Acked-by: Viresh Kumar <viresh.kumar@...aro.org>

-- 
viresh