From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: Pavel Machek <pavel@ucw.cz>
Cc: Jacek Anaszewski <jacek.anaszewski@gmail.com>,
Dan Murphy <dmurphy@ti.com>,
linux-leds@vger.kernel.org
Subject: Re: [PATCH v1] leds: Allow to call led_classdev_unregister() unconditionally
Date: Fri, 16 Aug 2019 16:31:46 +0300 [thread overview]
Message-ID: <20190816133146.GH30120@smile.fi.intel.com> (raw)
In-Reply-To: <20190816114908.GA10081@amd>
On Fri, Aug 16, 2019 at 01:49:08PM +0200, Pavel Machek wrote:
> Hi!
>
> > If in the certain driver the LED is optional, and it's a majority of them,
> > the call of led_classdev_unregister() still requires some additional checks.
> >
> > The usual pattern on unregistering is to check for NULL, but we also check
> > for IS_ERR() in case device_create_with_groups() fails.
> >
> > The change will reduce a burden in a lot of drivers to repeatedly check
> > for above conditions.
>
> I don't see majority of calls being protected. Doing nothing on NULL
> sounds reasonable. I'm less sure about "IS_ERR"...
Majority by drivers, not by absolute number of calls you can grep for.
What I'm referring to is, for example,
commit 99fef587ff98894426d9bf1f5b7336345052d4b3
Author: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Date: Mon Dec 3 20:21:41 2018 +0200
driver core: platform: Respect return code of platform_device_register_full()
--
With Best Regards,
Andy Shevchenko
next prev parent reply other threads:[~2019-08-16 13:32 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-16 10:52 [PATCH v1] leds: Allow to call led_classdev_unregister() unconditionally Andy Shevchenko
2019-08-16 11:49 ` Pavel Machek
2019-08-16 13:31 ` Andy Shevchenko [this message]
2019-08-16 18:02 ` Jacek Anaszewski
2019-08-25 10:51 ` Jacek Anaszewski
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