From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7FB12C35247 for ; Sun, 26 Jan 2020 09:18:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4A7FC20842 for ; Sun, 26 Jan 2020 09:18:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1580030295; bh=nEEdcHdiaxn0c3QjTCUa7y45tZSSnjihAh7JWpFqZlg=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=XyhVccqYXC+3kR0aHwDTeJzFnWbFTEIU0v44A6d2vPvEj3nHyy2C3H1h6Fx/dtoF4 4WSUlxwb4ootnojIKTyL+4w8OL40NMVSVTz8Nya2ncMxv3FahMXleZQ4hOIccGp65h 79lts2iikrMmzjoThs+dhv6g71IcIYvrm6rqyFLg= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729107AbgAZJSO (ORCPT ); Sun, 26 Jan 2020 04:18:14 -0500 Received: from mail.kernel.org ([198.145.29.99]:43238 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726240AbgAZJSO (ORCPT ); Sun, 26 Jan 2020 04:18:14 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 5C12D2071E; Sun, 26 Jan 2020 09:18:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1580030293; bh=nEEdcHdiaxn0c3QjTCUa7y45tZSSnjihAh7JWpFqZlg=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=Ssb4+wBX0Tda3Kh9rks3ybMyRqRFbKYV3MwiefXJU6uIxpSPn3GXUmKMIrDLvmdi4 fN2VmsdtueoC7Dg2ig5EcTiDbanv9+syKlD+b8WRUU8JJJAjBoP9CSzrJtORutcusU mTjLglKi0873hqnQaKdYImiAvZoeNz0XwCbUii9o= Date: Sun, 26 Jan 2020 10:18:11 +0100 From: Greg Kroah-Hartman To: Pavel Machek Cc: linux-kernel@vger.kernel.org, stable@vger.kernel.org, Jean-Jacques Hiblot Subject: Re: [PATCH 4.19 014/639] leds: tlc591xx: update the maximum brightness Message-ID: <20200126091811.GB3549630@kroah.com> References: <20200124093047.008739095@linuxfoundation.org> <20200124093048.912391801@linuxfoundation.org> <20200124231826.GA14064@duo.ucw.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200124231826.GA14064@duo.ucw.cz> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat, Jan 25, 2020 at 12:18:26AM +0100, Pavel Machek wrote: > On Fri 2020-01-24 10:23:04, Greg Kroah-Hartman wrote: > > From: Jean-Jacques Hiblot > > > > commit a2cafdfd8cf5ad8adda6c0ce44a59f46431edf02 upstream. > > > > The TLC chips actually offer 257 levels: > > - 0: led OFF > > - 1-255: Led dimmed is using a PWM. The duty cycle range from 0.4% to 99.6% > > - 256: led fully ON > > > > Fixes: e370d010a5fe ("leds: tlc591xx: Driver for the TI 8/16 Channel i2c LED driver") > > Signed-off-by: Jean-Jacques Hiblot > > Signed-off-by: Pavel Machek > > Signed-off-by: Greg Kroah-Hartman > > Its a new feature, really and quite unusual one: 257 brightness levels > is not usual. It is theoretically safe, but... > > Lets not do that for -stable. > > (I'm a LED maintainer). Ok, now dropped from 4.19 and older, thanks! greg k-h