From mboxrd@z Thu Jan 1 00:00:00 1970 From: Linus Walleij Subject: Re: [PATCH v1 1/2] pinctrl: tegra: Move drivers registration to arch_init level Date: Fri, 3 Aug 2018 19:18:43 +0200 Message-ID: References: <20180802111144.12512-1-digetx@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Return-path: In-Reply-To: <20180802111144.12512-1-digetx@gmail.com> Sender: linux-kernel-owner@vger.kernel.org To: Dmitry Osipenko Cc: "thierry.reding@gmail.com" , Jon Hunter , Stefan Agner , Marcel Ziswiler , linux-tegra@vger.kernel.org, "open list:GPIO SUBSYSTEM" , "linux-kernel@vger.kernel.org" List-Id: linux-gpio@vger.kernel.org On Thu, Aug 2, 2018 at 1:12 PM Dmitry Osipenko wrote: > There is a bug in regards to deferred probing within the drivers core > that causes GPIO-driver to suspend after its users. The bug appears if > GPIO-driver probe is getting deferred, which happens after introducing > dependency on PINCTRL-driver for the GPIO-driver by defining "gpio-ranges" > property in device-tree. The bug in the drivers core is old (more than 4 > years now) and is well known, unfortunately there is no easy fix for it. > The good news is that we can workaround the deferred probe issue by > changing GPIO / PINCTRL drivers registration order and hence by moving > PINCTRL driver registration to the arch_init level and GPIO to the > subsys_init. > > Signed-off-by: Dmitry Osipenko Patch applied with Stefan's ACK. Yours, Linus Walleij