Received: by 2002:a25:e7d8:0:0:0:0:0 with SMTP id e207csp940321ybh; Tue, 10 Mar 2020 11:13:44 -0700 (PDT) X-Google-Smtp-Source: ADFU+vujxvTo2SQ5Q/+i4gbtgJA0glTJiFjzqOMkdwNsg0KrukUpC1FZOJwuxtMkEniIiRlNgP0v X-Received: by 2002:aca:ad93:: with SMTP id w141mr2162869oie.54.1583864023905; Tue, 10 Mar 2020 11:13:43 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1583864023; cv=none; d=google.com; s=arc-20160816; b=t5q8GF37ZlMNYl9vs3U9Nx2RnzStwUF7Js3t6P0zMkPlVhBfBWk0dh7h345dWvsD+K Id8MtY5G3q+VUhgT7A3jZgT8wrx+eTzNI4JqZzb0pbjVXc0bDbq6fMZ4eM1YwMqsrUui q7PI4dgkslb6PvmGWkgrINgioLpDELrmo+8Z++usFXVhTKPwvZfQvlUORzkwuDXivVxp RFRvGM2pboTJMecBjtUjIqWqZOcvJtUvIbWtaJZnEYDPcXwB88iLqju3q7FL5b7mKjGL +y62wKzlRQ7YqIv5YwEEKzo91oxUSaLYaF3NrDLqVaDsHw0mPizVATdPWwphiRWva90e mVoA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:user-agent:in-reply-to :content-disposition:mime-version:references:message-id:subject:cc :to:from:date; bh=EuldFJUy+5odo4QOGLaF1m5KhIWz/DUCyzCQ05rXp7c=; b=czDkiEnMRYIX7/1aRNVxXSHdAAxfZ/wofffSiYuf1PthrQeLhgOtIt1oXReZGJZ0sN ggFRkAEbkp9KVvA41F3f67zJ+25uQBc3ifu/Vf96Il9WjmPu0ceXgX8y7WOlmZYkGOIi ca9p9n8taLoSAuZwfz03pQMm5I5xRRCpLvn+o/+XuZgJXs5LKCNrBxYRJCtOY6/RCODw UjxLf5+DUMiD4Rp56A5OQ/blODbj8o5Ed/lOa2FXmduLw0PkbryRBrP1RNHASGTXzwti CSsbc0S23Cg19Xg2naClBRtXCTUFwLgFBDK0PNZvLpyRZfyzC9b9YCPskuPoPLEUnBkA 3W5Q== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id z16si7193753otj.5.2020.03.10.11.13.31; Tue, 10 Mar 2020 11:13:43 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726605AbgCJSMo (ORCPT + 99 others); Tue, 10 Mar 2020 14:12:44 -0400 Received: from alexa-out-sd-01.qualcomm.com ([199.106.114.38]:38739 "EHLO alexa-out-sd-01.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726464AbgCJSMo (ORCPT ); Tue, 10 Mar 2020 14:12:44 -0400 Received: from unknown (HELO ironmsg05-sd.qualcomm.com) ([10.53.140.145]) by alexa-out-sd-01.qualcomm.com with ESMTP; 10 Mar 2020 11:12:43 -0700 Received: from gurus-linux.qualcomm.com ([10.46.162.81]) by ironmsg05-sd.qualcomm.com with ESMTP; 10 Mar 2020 11:12:42 -0700 Received: by gurus-linux.qualcomm.com (Postfix, from userid 383780) id DE2854AAD; Tue, 10 Mar 2020 11:12:42 -0700 (PDT) Date: Tue, 10 Mar 2020 11:12:42 -0700 From: Guru Das Srinagesh To: Daniel Thompson Cc: linux-pwm@vger.kernel.org, Thierry Reding , Uwe =?utf-8?Q?Kleine-K=C3=B6nig?= , Subbaraman Narayanamurthy , linux-kernel@vger.kernel.org, Lee Jones , Jingoo Han , Bartlomiej Zolnierkiewicz , dri-devel@lists.freedesktop.org, linux-fbdev@vger.kernel.org Subject: Re: [PATCH v7 12/13] backlight: pwm_bl: Use 64-bit division macros for period and duty cycle Message-ID: <20200310181242.GA31738@codeaurora.org> References: <20200310143432.cfjlqac5x6oinshj@holly.lan> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200310143432.cfjlqac5x6oinshj@holly.lan> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Mar 10, 2020 at 02:34:32PM +0000, Daniel Thompson wrote: > This patch looks like it is a tiny change to get the pwm_backlight to > perform 64-bit division. Most of the above text is completely irrelevant > to the change contained in this patch. No need to justify the change in > the PWM structures here since that can go in the patch that changes > those structures. Just describe what this patch does, perhaps something > like the following: > > The PWM API will shortly switch the state.period and > state.duty_cycle fields to 64-bit values. Make pwm_bl > ready for this transition by adopting 64-bit division > macros. Will update the commit text accordingly. > Also please copy the backlight maintainers into the covering letter. It > is useful to place patches like this into context. Will do. Thank you. Guru Das.