From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dmitry Osipenko Subject: Re: [PATCH v1 1/2] pinctrl: tegra: Move drivers registration to arch_init level Date: Thu, 02 Aug 2018 16:01:24 +0300 Message-ID: <4576764.PLucfz68jK@dimapc> References: <20180802111144.12512-1-digetx@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7Bit Return-path: In-Reply-To: <20180802111144.12512-1-digetx@gmail.com> Sender: linux-kernel-owner@vger.kernel.org To: Linus Walleij Cc: Thierry Reding , Jonathan Hunter , Stefan Agner , Marcel Ziswiler , linux-tegra@vger.kernel.org, linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org List-Id: linux-tegra@vger.kernel.org On Thursday, 2 August 2018 14:11:43 MSK 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 I meant "before its users", of course. If the rest of the patches is fine, please let me know if re-sending is needed or you'll correct the comment in place while applying. > 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