linux-kernel - Re: [PATCH] mmc: sdhci-cadence: Fix an error handling path in sdhci_cdns

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Message-ID: <CAPDyKFqWD+w82N5AB0CJ867nPvg4tdHWuKDx=784qSXY4K6tNA@mail.gmail.com>
Date:   Tue, 2 May 2023 16:32:04 +0200
From:   Ulf Hansson <ulf.hansson@...aro.org>
To:     Christophe JAILLET <christophe.jaillet@...adoo.fr>
Cc:     Adrian Hunter <adrian.hunter@...el.com>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Brad Larson <blarson@....com>, linux-kernel@...r.kernel.org,
        kernel-janitors@...r.kernel.org, linux-mmc@...r.kernel.org
Subject: Re: [PATCH] mmc: sdhci-cadence: Fix an error handling path in sdhci_cdns_probe()

On Tue, 25 Apr 2023 at 15:41, Christophe JAILLET
<christophe.jaillet@...adoo.fr> wrote:
>
> If devm_reset_control_get_optional_exclusive() fails, some resources still
> need to be released. So branch to the error handling path instead of
> returning directly.
>
> Fixes: aad53d4ee756 ("mmc: sdhci-cadence: Support mmc hardware reset")
> Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>

Applied for fixes, thanks!

Kind regards
Uffe

> ---
>  drivers/mmc/host/sdhci-cadence.c | 8 +++++---
>  1 file changed, 5 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/mmc/host/sdhci-cadence.c b/drivers/mmc/host/sdhci-cadence.c
> index b24aa27da50c..d2f625054689 100644
> --- a/drivers/mmc/host/sdhci-cadence.c
> +++ b/drivers/mmc/host/sdhci-cadence.c
> @@ -540,9 +540,11 @@ static int sdhci_cdns_probe(struct platform_device *pdev)
>
>         if (host->mmc->caps & MMC_CAP_HW_RESET) {
>                 priv->rst_hw = devm_reset_control_get_optional_exclusive(dev, NULL);
> -               if (IS_ERR(priv->rst_hw))
> -                       return dev_err_probe(mmc_dev(host->mmc), PTR_ERR(priv->rst_hw),
> -                                            "reset controller error\n");
> +               if (IS_ERR(priv->rst_hw)) {
> +                       ret = dev_err_probe(mmc_dev(host->mmc), PTR_ERR(priv->rst_hw),
> +                                           "reset controller error\n");
> +                       goto free;
> +               }
>                 if (priv->rst_hw)
>                         host->mmc_host_ops.card_hw_reset = sdhci_cdns_mmc_hw_reset;
>         }
> --
> 2.34.1
>