From mboxrd@z Thu Jan 1 00:00:00 1970 Received: with ECARTIS (v1.0.0; list linux-mips); Thu, 09 Oct 2014 17:45:28 +0200 (CEST) Received: from mail-oi0-f49.google.com ([209.85.218.49]:59683 "EHLO mail-oi0-f49.google.com" rhost-flags-OK-OK-OK-OK) by eddie.linux-mips.org with ESMTP id S27010963AbaJIPp07IttP (ORCPT ); Thu, 9 Oct 2014 17:45:26 +0200 Received: by mail-oi0-f49.google.com with SMTP id a3so3379444oib.36 for ; Thu, 09 Oct 2014 08:45:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=sender:date:from:to:cc:subject:message-id:references:mime-version :content-type:content-disposition:in-reply-to:user-agent; bh=4eIxMi56Qx395xF6i1ZJJ06CAEoCKtzjsOOfm6px7Og=; b=u+3eovar+KmWaFVC9lG3lkLtq/pTW2yOhv9rOY31R3SVeXnCUxdhKIvstExL/A1NFI tBJQwX29iYGr54NpDzaOVU9HDj4a1ElKUFqaQV9m01sl0lAsge3eqsApa8SdN7CljbFF FFqoYgFykGGu5XzZUkwjE+l8hBh8G3ywLQ5DQ0+AXKbHvNKq37EnyfrM8rc45gPZ04ES bFTPHmBo3uuwKFNQ0kj0YLYl5Un4wzztLXHevmbNokokQeg/Q/S+RPQ5E1XDcY6xLdAV BocWTKzC0hf+7Q58hKjrcRfXnWu/FgdhaesjBmJP+iGMbHn804a2Yi/gUCFsraMUMI1R IqIQ== X-Received: by 10.68.215.67 with SMTP id og3mr636738pbc.30.1412869520469; Thu, 09 Oct 2014 08:45:20 -0700 (PDT) Received: from localhost (108-223-40-66.lightspeed.sntcca.sbcglobal.net. [108.223.40.66]) by mx.google.com with ESMTPSA id cl1sm15338pbb.92.2014.10.09.08.45.19 for (version=TLSv1.2 cipher=RC4-SHA bits=128/128); Thu, 09 Oct 2014 08:45:19 -0700 (PDT) Date: Thu, 9 Oct 2014 08:45:15 -0700 From: Guenter Roeck To: Lee Jones Cc: Catalin Marinas , "linux-m32r-ja@ml.linux-m32r.org" , "linux-mips@linux-mips.org" , "linux-efi@vger.kernel.org" , "linux-ia64@vger.kernel.org" , "linux-xtensa@linux-xtensa.org" , Linus Walleij , "devel@driverdev.osuosl.org" , "linux-s390@vger.kernel.org" , "lguest@lists.ozlabs.org" , "linux-c6x-dev@linux-c6x.org" , "linux-hexagon@vger.kernel.org" , "linux-sh@vger.kernel.org" , "linux-acpi@vger.kernel.org" , "xen-devel@lists.xenproject.org" , "devicetree@vger.kernel.org" , "user-mode-linux-devel@lists.sourceforge.net" , "linux-pm@vger.kernel.org" , "adi-buildroot-devel@lists.sourceforge.net" , "linux-m68k@vger.kernel.org" , "linux-am33-list@redhat.com" , "linux-tegra@vger.kernel.org" , "openipmi-developer@lists.sourceforge.net" , "linux-metag@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , Samuel Ortiz , "linux-parisc@vger.kernel.org" , "linux-cris-kernel@axis.com" , "linux-kernel@vger.kernel.org" , "linux-alpha@vger.kernel.org" , "linuxppc-dev@lists.ozlabs.org" Subject: Re: [PATCH 12/44] mfd: ab8500-sysctrl: Register with kernel poweroff handler Message-ID: <20141009154515.GB31987@roeck-us.net> References: <1412659726-29957-1-git-send-email-linux@roeck-us.net> <1412659726-29957-13-git-send-email-linux@roeck-us.net> <20141007080048.GB25331@lee--X1> <20141009103656.GF17836@e104818-lin.cambridge.arm.com> <20141009104927.GN20647@lee--X1> <54368D16.40404@roeck-us.net> <20141009133355.GQ20647@lee--X1> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20141009133355.GQ20647@lee--X1> User-Agent: Mutt/1.5.21 (2010-09-15) Return-Path: X-Envelope-To: <"|/home/ecartis/ecartis -s linux-mips"> (uid 0) X-Orcpt: rfc822;linux-mips@linux-mips.org Original-Recipient: rfc822;linux-mips@linux-mips.org X-archive-position: 43148 X-ecartis-version: Ecartis v1.0.0 Sender: linux-mips-bounce@linux-mips.org Errors-to: linux-mips-bounce@linux-mips.org X-original-sender: linux@roeck-us.net Precedence: bulk List-help: List-unsubscribe: List-software: Ecartis version 1.0.0 List-Id: linux-mips X-List-ID: linux-mips List-subscribe: List-owner: List-post: List-archive: X-list: linux-mips On Thu, Oct 09, 2014 at 02:33:55PM +0100, Lee Jones wrote: > On Thu, 09 Oct 2014, Guenter Roeck wrote: > > > On 10/09/2014 03:49 AM, Lee Jones wrote: > > >On Thu, 09 Oct 2014, Catalin Marinas wrote: > > > > > >>On Tue, Oct 07, 2014 at 09:00:48AM +0100, Lee Jones wrote: > > >>>On Mon, 06 Oct 2014, Guenter Roeck wrote: > > >>>>--- a/drivers/mfd/ab8500-sysctrl.c > > >>>>+++ b/drivers/mfd/ab8500-sysctrl.c > > >>>>@@ -6,6 +6,7 @@ > > >>> > > >>>[...] > > >>> > > >>>>+static int ab8500_power_off(struct notifier_block *this, unsigned long unused1, > > >>>>+ void *unused2) > > >>>> { > > >>>> sigset_t old; > > >>>> sigset_t all; > > >>>>@@ -34,11 +36,6 @@ static void ab8500_power_off(void) > > >>>> struct power_supply *psy; > > >>>> int ret; > > >>>> > > >>>>- if (sysctrl_dev == NULL) { > > >>>>- pr_err("%s: sysctrl not initialized\n", __func__); > > >>>>- return; > > >>>>- } > > >>> > > >>>Can you explain the purpose of this change please? > > >> > > >>I guess it's because the sysctrl_dev is already initialised when > > >>registering the power_off handler, so there isn't a way to call the > > >>above function with a NULL sysctrl_dev. Probably even with the original > > >>code you didn't need this check (after some race fix in > > >>ab8500_sysctrl_remove but races is one of the things Guenter's patches > > >>try to address). > > > > > >Sounds reasonable, although I think this change should be part of > > >another patch. > > > > > Sure, no problem. I'll split this into two patches. > > > > Since we are at it, any idea what to do with the restart function > > in the same file ? It is not used anywhere. > > You can strip it out with Linus Walleij's Ack. Or I'll be happy to do > it? > I'll strip it out in a 3rd patch. Guenter From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oi0-f49.google.com ([209.85.218.49]:59683 "EHLO mail-oi0-f49.google.com" rhost-flags-OK-OK-OK-OK) by eddie.linux-mips.org with ESMTP id S27010963AbaJIPp07IttP (ORCPT ); Thu, 9 Oct 2014 17:45:26 +0200 Received: by mail-oi0-f49.google.com with SMTP id a3so3379444oib.36 for ; Thu, 09 Oct 2014 08:45:20 -0700 (PDT) Date: Thu, 9 Oct 2014 08:45:15 -0700 From: Guenter Roeck Subject: Re: [PATCH 12/44] mfd: ab8500-sysctrl: Register with kernel poweroff handler Message-ID: <20141009154515.GB31987@roeck-us.net> References: <1412659726-29957-1-git-send-email-linux@roeck-us.net> <1412659726-29957-13-git-send-email-linux@roeck-us.net> <20141007080048.GB25331@lee--X1> <20141009103656.GF17836@e104818-lin.cambridge.arm.com> <20141009104927.GN20647@lee--X1> <54368D16.40404@roeck-us.net> <20141009133355.GQ20647@lee--X1> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20141009133355.GQ20647@lee--X1> Return-Path: Sender: linux-mips-bounce@linux-mips.org Errors-to: linux-mips-bounce@linux-mips.org List-help: List-unsubscribe: List-software: Ecartis version 1.0.0 List-subscribe: List-owner: List-post: List-archive: To: Lee Jones Cc: Catalin Marinas , "linux-m32r-ja@ml.linux-m32r.org" , "linux-mips@linux-mips.org" , "linux-efi@vger.kernel.org" , "linux-ia64@vger.kernel.org" , "linux-xtensa@linux-xtensa.org" , Linus Walleij , "devel@driverdev.osuosl.org" , "linux-s390@vger.kernel.org" , "lguest@lists.ozlabs.org" , "linux-c6x-dev@linux-c6x.org" , "linux-hexagon@vger.kernel.org" , "linux-sh@vger.kernel.org" , "linux-acpi@vger.kernel.org" , "xen-devel@lists.xenproject.org" , "devicetree@vger.kernel.org" , "user-mode-linux-devel@lists.sourceforge.net" , "linux-pm@vger.kernel.org" , "adi-buildroot-devel@lists.sourceforge.net" , "linux-m68k@vger.kernel.org" , "linux-am33-list@redhat.com" , "linux-tegra@vger.kernel.org" , "openipmi-developer@lists.sourceforge.net" , "linux-metag@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , Samuel Ortiz , "linux-parisc@vger.kernel.org" , "linux-cris-kernel@axis.com" , "linux-kernel@vger.kernel.org" , "linux-alpha@vger.kernel.org" , "linuxppc-dev@lists.ozlabs.org" Message-ID: <20141009154515.nNL7ROp85tAZy0KKcfOpQgvVdI9PZ7gvb8ypUct4SqQ@z> On Thu, Oct 09, 2014 at 02:33:55PM +0100, Lee Jones wrote: > On Thu, 09 Oct 2014, Guenter Roeck wrote: > > > On 10/09/2014 03:49 AM, Lee Jones wrote: > > >On Thu, 09 Oct 2014, Catalin Marinas wrote: > > > > > >>On Tue, Oct 07, 2014 at 09:00:48AM +0100, Lee Jones wrote: > > >>>On Mon, 06 Oct 2014, Guenter Roeck wrote: > > >>>>--- a/drivers/mfd/ab8500-sysctrl.c > > >>>>+++ b/drivers/mfd/ab8500-sysctrl.c > > >>>>@@ -6,6 +6,7 @@ > > >>> > > >>>[...] > > >>> > > >>>>+static int ab8500_power_off(struct notifier_block *this, unsigned long unused1, > > >>>>+ void *unused2) > > >>>> { > > >>>> sigset_t old; > > >>>> sigset_t all; > > >>>>@@ -34,11 +36,6 @@ static void ab8500_power_off(void) > > >>>> struct power_supply *psy; > > >>>> int ret; > > >>>> > > >>>>- if (sysctrl_dev == NULL) { > > >>>>- pr_err("%s: sysctrl not initialized\n", __func__); > > >>>>- return; > > >>>>- } > > >>> > > >>>Can you explain the purpose of this change please? > > >> > > >>I guess it's because the sysctrl_dev is already initialised when > > >>registering the power_off handler, so there isn't a way to call the > > >>above function with a NULL sysctrl_dev. Probably even with the original > > >>code you didn't need this check (after some race fix in > > >>ab8500_sysctrl_remove but races is one of the things Guenter's patches > > >>try to address). > > > > > >Sounds reasonable, although I think this change should be part of > > >another patch. > > > > > Sure, no problem. I'll split this into two patches. > > > > Since we are at it, any idea what to do with the restart function > > in the same file ? It is not used anywhere. > > You can strip it out with Linus Walleij's Ack. Or I'll be happy to do > it? > I'll strip it out in a 3rd patch. Guenter