linux-kernel - Re: [PATCH] pata_arasan_cf: fix ata_host

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Message-ID: <CAOh2x=n8PGuykczfpi0T1-WwVmakURyX+RuuOQiFVhpYPmrS6A@mail.gmail.com>
Date:	Tue, 1 Apr 2014 09:50:42 +0530
From:	Viresh Kumar <viresh.kumar@...aro.org>
To:	Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
Cc:	Tejun Heo <tj@...nel.org>, Shiraz Hashim <shiraz.hashim@...com>,
	"...)" <linux-ide@...r.kernel.org>,
	spear-devel <spear-devel@...t.st.com>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] pata_arasan_cf: fix ata_host_activate() failure handling

On Mon, Mar 31, 2014 at 11:19 PM, Bartlomiej Zolnierkiewicz
<b.zolnierkie@...sung.com> wrote:
> Add missing cf_exit() and clk_put() calls to ata_host_activate()
> failure path.
>
> Cc: Viresh Kumar <viresh.linux@...il.com>
> Cc: Shiraz Hashim <shiraz.hashim@...com>
> Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
> ---
>  drivers/ata/pata_arasan_cf.c |   10 ++++++++--
>  1 file changed, 8 insertions(+), 2 deletions(-)
>
> Index: b/drivers/ata/pata_arasan_cf.c
> ===================================================================
> --- a/drivers/ata/pata_arasan_cf.c      2014-03-31 16:57:47.443727785 +0200
> +++ b/drivers/ata/pata_arasan_cf.c      2014-03-31 17:09:48.171715498 +0200
> @@ -898,9 +898,15 @@ static int arasan_cf_probe(struct platfo
>
>         cf_card_detect(acdev, 0);
>
> -       return ata_host_activate(host, acdev->irq, irq_handler, 0,
> -                       &arasan_cf_sht);
> +       ret = ata_host_activate(host, acdev->irq, irq_handler, 0,
> +                               &arasan_cf_sht);
> +       if (ret)
> +               goto exit_cf;
>
> +       return 0;

Probably this would be better:

if (!ret)
    return 0

and then no need of a goto..

> +
> +exit_cf:
> +       cf_exit(acdev);
>  free_clk:
>         clk_put(acdev->clk);
>         return ret;
>
--
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