linux-kernel - Re: [PATCH] fpga: altera-cvp: Fix an error handling path in 'altera_cvp

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Message-ID: <CAAtXAHdF_AEcohGW=yoUgoe1OWcxLeCYgp2u3pjsmUn=-z-_bg@mail.gmail.com>
Date:   Wed, 13 Jun 2018 07:42:03 -0500
From:   Moritz Fischer <moritz.fischer@...us.com>
To:     Christophe JAILLET <christophe.jaillet@...adoo.fr>
Cc:     Alan Tull <atull@...nel.org>, linux-fpga@...r.kernel.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org
Subject: Re: [PATCH] fpga: altera-cvp: Fix an error handling path in 'altera_cvp_probe()'

Hi Christophe,

good catch!

On Mon, Jun 11, 2018 at 12:20 PM, Christophe JAILLET
<christophe.jaillet@...adoo.fr> wrote:
> If 'fpga_mgr_create()' fails, we should release some resources, as done
> in the other error handling path of the function.
>
> Fixes: 7085e2a94f7d ("fpga: manager: change api, don't use drvdata")
> Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
Reviewed-by: Moritz Fischer <mdf@...nel.org>
> ---
>  drivers/fpga/altera-cvp.c | 6 ++++--
>  1 file changed, 4 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/fpga/altera-cvp.c b/drivers/fpga/altera-cvp.c
> index dd4edd8f22ce..7fa793672a7a 100644
> --- a/drivers/fpga/altera-cvp.c
> +++ b/drivers/fpga/altera-cvp.c
> @@ -455,8 +455,10 @@ static int altera_cvp_probe(struct pci_dev *pdev,
>
>         mgr = fpga_mgr_create(&pdev->dev, conf->mgr_name,
>                               &altera_cvp_ops, conf);
> -       if (!mgr)
> -               return -ENOMEM;
> +       if (!mgr) {
> +               ret = -ENOMEM;
> +               goto err_unmap;
> +       }
>
>         pci_set_drvdata(pdev, mgr);
>
> --
> 2.17.0
>
> --
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Thanks,

Moritz