linux-kernel - Re: [PATCH v2] mmc: core: Delete an error message for a failed memory allocation in four functions

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Message-ID: <CAPDyKFpWXvUenCr3ki3qc80MH3hBKhEgwiu9RMNuqtU-WThJ3w@mail.gmail.com>
Date:   Mon, 22 May 2017 14:03:13 +0200
From:   Ulf Hansson <ulf.hansson@...aro.org>
To:     SF Markus Elfring <elfring@...rs.sourceforge.net>
Cc:     "linux-mmc@...r.kernel.org" <linux-mmc@...r.kernel.org>,
        Bojan Prtvar <prtvar.b@...il.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Paul Burton <paul.burton@...tec.com>,
        Shawn Lin <shawn.lin@...k-chips.com>,
        Tomas Winkler <tomas.winkler@...el.com>,
        Uri Yanai <uri.yanai@...disk.com>,
        Wolfram Sang <wsa@...-dreams.de>,
        LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org
Subject: Re: [PATCH v2] mmc: core: Delete an error message for a failed memory
 allocation in four functions

On 19 May 2017 at 13:34, SF Markus Elfring
<elfring@...rs.sourceforge.net> wrote:
> From: Markus Elfring <elfring@...rs.sourceforge.net>
> Date: Fri, 19 May 2017 13:15:27 +0200
>
> Omit an extra message for a memory allocation failure in these functions.
>
> This issue was detected by using the Coccinelle software.
>
> Link: http://events.linuxfoundation.org/sites/events/files/slides/LCJ16-Refactor_Strings-WSang_0.pdf
> Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>

Thanks, applied for next!

Kind regards
Uffe

> ---
>
> v2:
> This refactoring superseded the update suggestion "mmc: core: Delete
> an error message for a failed memory allocation in three functions"
> from 2017-05-13 because another adjustment was requested by Ulf Hansson.
> https://patchwork.kernel.org/patch/9725233/
> https://lkml.org/lkml/2017/5/19/308
>
>  drivers/mmc/core/mmc_test.c |  2 --
>  drivers/mmc/core/sd.c       | 16 +++-------------
>  2 files changed, 3 insertions(+), 15 deletions(-)
>
> diff --git a/drivers/mmc/core/mmc_test.c b/drivers/mmc/core/mmc_test.c
> index fd1b4b8510b9..7a304a6e5bf1 100644
> --- a/drivers/mmc/core/mmc_test.c
> +++ b/drivers/mmc/core/mmc_test.c
> @@ -3220,8 +3220,6 @@ static int __mmc_test_register_dbgfs_file(struct mmc_card *card,
>         df = kmalloc(sizeof(*df), GFP_KERNEL);
>         if (!df) {
>                 debugfs_remove(file);
> -               dev_err(&card->dev,
> -                       "Can't allocate memory for internal usage.\n");
>                 return -ENOMEM;
>         }
>
> diff --git a/drivers/mmc/core/sd.c b/drivers/mmc/core/sd.c
> index d109634fbfce..1d7542daecbe 100644
> --- a/drivers/mmc/core/sd.c
> +++ b/drivers/mmc/core/sd.c
> @@ -294,12 +294,8 @@ static int mmc_read_switch(struct mmc_card *card)
>         err = -EIO;
>
>         status = kmalloc(64, GFP_KERNEL);
> -       if (!status) {
> -               pr_err("%s: could not allocate a buffer for "
> -                       "switch capabilities.\n",
> -                       mmc_hostname(card->host));
> +       if (!status)
>                 return -ENOMEM;
> -       }
>
>         /*
>          * Find out the card's support bits with a mode 0 operation.
> @@ -359,11 +355,8 @@ int mmc_sd_switch_hs(struct mmc_card *card)
>                 return 0;
>
>         status = kmalloc(64, GFP_KERNEL);
> -       if (!status) {
> -               pr_err("%s: could not allocate a buffer for "
> -                       "switch capabilities.\n", mmc_hostname(card->host));
> +       if (!status)
>                 return -ENOMEM;
> -       }
>
>         err = mmc_sd_switch(card, 1, 0, 1, status);
>         if (err)
> @@ -596,11 +589,8 @@ static int mmc_sd_init_uhs_card(struct mmc_card *card)
>                 return 0;
>
>         status = kmalloc(64, GFP_KERNEL);
> -       if (!status) {
> -               pr_err("%s: could not allocate a buffer for "
> -                       "switch capabilities.\n", mmc_hostname(card->host));
> +       if (!status)
>                 return -ENOMEM;
> -       }
>
>         /* Set 4-bit bus width */
>         if ((card->host->caps & MMC_CAP_4_BIT_DATA) &&
> --
> 2.13.0
>
> --
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