From mboxrd@z Thu Jan 1 00:00:00 1970 From: Arnd Bergmann Subject: Re: =?UTF-8?B?562U5aSNOg==?= [PATCH V3] cpufreq: qoriq: Register cooling device based on device tree Date: Mon, 11 Jan 2016 22:13:06 +0100 Message-ID: <13735438.Yvdu0suV1m@wuerfel> References: <1448529671-48216-1-git-send-email-hongtao.jia@freescale.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7Bit Return-path: In-Reply-To: Sender: linux-pm-owner@vger.kernel.org To: linuxppc-dev@lists.ozlabs.org Cc: Scott Wood , Hongtao Jia , "Rafael J. Wysocki" , "devicetree@vger.kernel.org" , "linux-pm@vger.kernel.org" , Scott Wood , "viresh.kumar@linaro.org" , Hongtao Jia , "edubezval@gmail.com" List-Id: devicetree@vger.kernel.org On Monday 11 January 2016 17:34:52 Scott Wood wrote: > >> > >> I think you need a 'depends on THERMAL' to prevent the driver from being > >> built-in when THERMAL=m. > >> > >> Arnd > > > > Correct. I need to add following lines to the Kconfig file: > > depends on !CPU_THERMAL || THERMAL=y > > > > Hi Rafael, > > Should I send a new patch include this fix or send a fix patch? > > Why THERMAL=y and not just THERMAL, which would allow building this > driver as a module? Right, that would be better, and it is what all other drivers do. For some reason, some drivers depend on !CPU_THERMAL and others depend on !THERMAL_OF here, and I think the result is the same, but we are a bit inconsistent here. CPU_THERMAL cannot be set if THERMAL_OF is disabled, and the header file only uses the 'extern' declaration if both are set. Arnd