linux-kernel - Re: [PATCH v2 05/24] EDAC, mc: Fix and improve sysfs init functions

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Date:   Tue, 13 Aug 2019 10:26:55 +0200
From:   Borislav Petkov <bp@...en8.de>
To:     Robert Richter <rrichter@...vell.com>
Cc:     James Morse <james.morse@....com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        "linux-edac@...r.kernel.org" <linux-edac@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 05/24] EDAC, mc: Fix and improve sysfs init functions

On Mon, Jun 24, 2019 at 03:09:02PM +0000, Robert Richter wrote:
> Remove gotos as they just create overhead.

Overhead?

> Also, fix debug message for
> the case edac_create_dimm_object() is failing.
> 
> Signed-off-by: Robert Richter <rrichter@...vell.com>
> ---
>  drivers/edac/edac_mc_sysfs.c | 25 +++++++++----------------
>  1 file changed, 9 insertions(+), 16 deletions(-)
> 
> diff --git a/drivers/edac/edac_mc_sysfs.c b/drivers/edac/edac_mc_sysfs.c
> index 7c01e1cc030c..29dd9719f82f 100644
> --- a/drivers/edac/edac_mc_sysfs.c
> +++ b/drivers/edac/edac_mc_sysfs.c
> @@ -655,8 +655,9 @@ static int edac_create_dimm_object(struct mem_ctl_info *mci,
>  	err = device_add(&dimm->dev);
>  	if (err)
>  		put_device(&dimm->dev);
> -
> -	edac_dbg(0, "created rank/dimm device %s\n", dev_name(&dimm->dev));
> +	else
> +		edac_dbg(0, "created rank/dimm device %s\n",
> +			dev_name(&dimm->dev));

Please add a message to the error case too.

>  	return err;
>  }
> @@ -938,7 +939,7 @@ int edac_create_sysfs_mci_device(struct mem_ctl_info *mci,
>  	if (err < 0) {
>  		edac_dbg(1, "failure: create device %s\n", dev_name(&mci->dev));
>  		put_device(&mci->dev);
> -		goto out;
> +		return err;
>  	}
>  
>  	/*
> @@ -987,7 +988,6 @@ int edac_create_sysfs_mci_device(struct mem_ctl_info *mci,
>  	}
>  	device_unregister(&mci->dev);
>  
> -out:
>  	return err;
>  }
>  
> @@ -1044,10 +1044,8 @@ int __init edac_mc_sysfs_init(void)
>  	int err;
>  
>  	mci_pdev = kzalloc(sizeof(*mci_pdev), GFP_KERNEL);
> -	if (!mci_pdev) {
> -		err = -ENOMEM;
> -		goto out;
> -	}
> +	if (!mci_pdev)
> +		return -ENOMEM;
>  
>  	mci_pdev->bus = edac_get_sysfs_subsys();
>  	mci_pdev->type = &mc_attr_type;
> @@ -1056,15 +1054,10 @@ int __init edac_mc_sysfs_init(void)
>  
>  	err = device_add(mci_pdev);
>  	if (err < 0)
> -		goto out_put_device;
> -
> -	edac_dbg(0, "device %s created\n", dev_name(mci_pdev));
> -
> -	return 0;
> +		put_device(mci_pdev);
> +	else
> +		edac_dbg(0, "device %s created\n", dev_name(mci_pdev));

Ditto.

Thx.

-- 
Regards/Gruss,
    Boris.

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