From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: Thierry Reding <thierry.reding@gmail.com>
Cc: linux-pwm@vger.kernel.org, linux-kernel@vger.kernel.org,
"Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>
Subject: Re: [PATCH v2 3/4] pwm: sysfs: Replace sprintf() with sysfs_emit()
Date: Wed, 28 Sep 2022 16:40:35 +0300 [thread overview]
Message-ID: <YzRO0xrzlrHAYdaI@smile.fi.intel.com> (raw)
In-Reply-To: <YzQ9+Wzhfnila1s3@orome>
On Wed, Sep 28, 2022 at 02:28:41PM +0200, Thierry Reding wrote:
> On Fri, Aug 26, 2022 at 08:07:15PM +0300, Andy Shevchenko wrote:
> > For sysfs outputs, it's safer to use a new helper, sysfs_emit(),
> > instead of the raw sprintf() & co. This patch replaces such a
> > sprintf() call straightforwardly with the new helper.
> How exactly is sysfs_emit() safer here? In all of these cases, the
> values that sprintf() writes are the only values that are written into
> the buffer and we know that none of them exceed PAGE_SIZE. So the
> additional checks that sysfs_emit() performs are useless.
This is a recommended way to use sysfs_emit() mentioned in Documentation.
Care to fix documentation?
--
With Best Regards,
Andy Shevchenko
next prev parent reply other threads:[~2022-09-28 13:41 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-26 17:07 [PATCH v2 1/4] pwm: sysfs: Switch to DEFINE_SIMPLE_DEV_PM_OPS() and pm_sleep_ptr() Andy Shevchenko
2022-08-26 17:07 ` [PATCH v2 2/4] pwm: sysfs: Return directly from the for-loop in PM callbacks Andy Shevchenko
2022-09-28 12:31 ` Thierry Reding
2022-09-28 13:43 ` Andy Shevchenko
2022-08-26 17:07 ` [PATCH v2 3/4] pwm: sysfs: Replace sprintf() with sysfs_emit() Andy Shevchenko
2022-09-28 12:28 ` Thierry Reding
2022-09-28 13:40 ` Andy Shevchenko [this message]
2022-09-28 13:58 ` Andy Shevchenko
2022-09-28 15:20 ` Thierry Reding
2022-09-28 15:21 ` Thierry Reding
2022-09-28 15:39 ` Andy Shevchenko
2022-08-26 17:07 ` [PATCH v2 4/4] pwm: sysfs: Utilize an array for polarity strings Andy Shevchenko
2022-08-28 2:07 ` Joe Perches
[not found] ` <CAHp75VfY5RgAju5ASvAp565oF6VmYYiuowNsPTGSm=+1iFJ98A@mail.gmail.com>
2022-08-28 13:46 ` Joe Perches
2022-08-28 17:40 ` Andy Shevchenko
2022-08-28 18:19 ` Joe Perches
2022-08-29 7:59 ` Andy Shevchenko
2022-09-28 12:15 ` Thierry Reding
2022-09-06 13:57 ` [PATCH v2 1/4] pwm: sysfs: Switch to DEFINE_SIMPLE_DEV_PM_OPS() and pm_sleep_ptr() Andy Shevchenko
2022-09-28 12:31 ` Thierry Reding
2022-09-28 14:01 ` Andy Shevchenko
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