From: Lee Jones <lee@kernel.org>
To: Andy Shevchenko <andriy.shevchenko@intel.com>
Cc: Michael Tretter <m.tretter@pengutronix.de>,
Pavel Machek <pavel@kernel.org>,
linux-leds@vger.kernel.org, kernel@pengutronix.de,
Thorsten Schmelzer <tschmelzer@topcon.com>
Subject: Re: [PATCH] leds: led-class: detect brightness conversion base from string
Date: Tue, 10 Mar 2026 09:23:19 +0000 [thread overview]
Message-ID: <20260310092319.GF183676@google.com> (raw)
In-Reply-To: <aarupkr802-283I9@ashevche-desk.local>
On Fri, 06 Mar 2026, Andy Shevchenko wrote:
> On Fri, Mar 06, 2026 at 11:32:21AM +0000, Lee Jones wrote:
> > On Thu, 05 Mar 2026, Andy Shevchenko wrote:
> > > On Fri, Jan 23, 2026 at 10:57:26AM +0100, Michael Tretter wrote:
> > > > From: Thorsten Schmelzer <tschmelzer@topcon.com>
> > > >
> > > > sysfs-class-led doesn't specify the number format for the brightness,
> > > > but the class only accepts base 10 numbers.
> > > >
> > > > Use the automatic base detection of kstrtoul and accept the brightness
> > > > as hex value as well.
> > >
> > > This obviously brings a regression.
> > > Previously the 000000000000100 is 100, now it's 64.
> > >
> > > While I don't care much (I even like the change), I have to point this out.
> > >
> > > The correct fix is to update documentation.
> >
> > Again, should we remove this patch that you like?
>
> Depends if anybody outside relies on the above mentioned decimal values
> with leading 0(s). On the safest side is better to drop (and explain in
> the documentation that the values are decimal).
For the fear of breaking userspace, I have dropped the patch.
Please could someone update the docs?
--
Lee Jones [李琼斯]
next prev parent reply other threads:[~2026-03-10 9:23 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-01-23 9:57 [PATCH] leds: led-class: detect brightness conversion base from string Michael Tretter
2026-02-05 15:48 ` (subset) " Lee Jones
2026-03-05 13:55 ` Andy Shevchenko
2026-03-06 11:32 ` Lee Jones
2026-03-06 15:11 ` Andy Shevchenko
2026-03-10 9:23 ` Lee Jones [this message]
2026-03-10 16:52 ` Andy Shevchenko
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