From: Guenter Roeck <linux@roeck-us.net>
To: Jingoo Han <jg1.han@samsung.com>
Cc: "'Andrew Morton'" <akpm@linux-foundation.org>,
linux-kernel@vger.kernel.org,
"'Wim Van Sebroeck'" <wim@iguana.be>,
linux-watchdog@vger.kernel.org
Subject: Re: [PATCH RESEND 1/7] watchdog: at32ap700x_wdt: use devm_*() functions
Date: Mon, 29 Apr 2013 10:52:03 -0700 [thread overview]
Message-ID: <20130429175203.GA5183@roeck-us.net> (raw)
In-Reply-To: <000b01ce44bc$c0960280$41c20780$@samsung.com>
On Mon, Apr 29, 2013 at 06:34:31PM +0900, Jingoo Han wrote:
> Use devm_*() functions to make cleanup paths simpler.
>
> Signed-off-by: Jingoo Han <jg1.han@samsung.com>
> ---
> drivers/watchdog/at32ap700x_wdt.c | 12 ++++--------
> 1 files changed, 4 insertions(+), 8 deletions(-)
>
> diff --git a/drivers/watchdog/at32ap700x_wdt.c b/drivers/watchdog/at32ap700x_wdt.c
> index 7a715e3..c4cb552 100644
> --- a/drivers/watchdog/at32ap700x_wdt.c
> +++ b/drivers/watchdog/at32ap700x_wdt.c
> @@ -321,13 +321,14 @@ static int __init at32_wdt_probe(struct platform_device *pdev)
> return -ENXIO;
> }
>
> - wdt = kzalloc(sizeof(struct wdt_at32ap700x), GFP_KERNEL);
> + wdt = devm_kzalloc(&pdev->dev, sizeof(struct wdt_at32ap700x),
> + GFP_KERNEL);
> if (!wdt) {
> dev_dbg(&pdev->dev, "no memory for wdt structure\n");
> return -ENOMEM;
> }
>
> - wdt->regs = ioremap(regs->start, resource_size(regs));
> + wdt->regs = devm_ioremap(&pdev->dev, regs->start, resource_size(regs));
> if (!wdt->regs) {
> ret = -ENOMEM;
> dev_dbg(&pdev->dev, "could not map I/O memory\n");
> @@ -342,7 +343,7 @@ static int __init at32_wdt_probe(struct platform_device *pdev)
> dev_info(&pdev->dev, "CPU must be reset with external "
> "reset or POR due to silicon errata.\n");
> ret = -EIO;
> - goto err_iounmap;
> + goto err_free;
> } else {
> wdt->users = 0;
> }
> @@ -375,10 +376,7 @@ static int __init at32_wdt_probe(struct platform_device *pdev)
>
> err_register:
> platform_set_drvdata(pdev, NULL);
> -err_iounmap:
> - iounmap(wdt->regs);
> err_free:
> - kfree(wdt);
> wdt = NULL;
> return ret;
> }
> @@ -391,8 +389,6 @@ static int __exit at32_wdt_remove(struct platform_device *pdev)
> at32_wdt_stop();
>
> misc_deregister(&wdt->miscdev);
> - iounmap(wdt->regs);
> - kfree(wdt);
> wdt = NULL;
> platform_set_drvdata(pdev, NULL);
> }
err_free isn't really appropriate anymore as label,
and platform_set_drvdata(pdev, NULL) as well as the associated complexity
in at32_wdt_remove is not really needed, but especially the latter should
really be addressed in another patch, so
Acked-by: Guenter Roeck <linux@roeck-us.net>
next prev parent reply other threads:[~2013-04-29 17:52 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-29 9:34 [PATCH RESEND 1/7] watchdog: at32ap700x_wdt: use devm_*() functions Jingoo Han
2013-04-29 17:52 ` Guenter Roeck [this message]
-- strict thread matches above, loose matches on Subject: below --
2013-05-02 5:49 Jingoo Han
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20130429175203.GA5183@roeck-us.net \
--to=linux@roeck-us.net \
--cc=akpm@linux-foundation.org \
--cc=jg1.han@samsung.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-watchdog@vger.kernel.org \
--cc=wim@iguana.be \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox