From mboxrd@z Thu Jan 1 00:00:00 1970 From: Greg KH Subject: Re: [PATCH] dt: platform driver: Fill the resources before probe and defer if needed Date: Tue, 18 Feb 2014 12:22:05 -0800 Message-ID: <20140218202205.GA13835@kroah.com> References: <1392285429-9325-1-git-send-email-jjhiblot@traphandler.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <1392285429-9325-1-git-send-email-jjhiblot@traphandler.com> Sender: linux-kernel-owner@vger.kernel.org To: Jean-Jacques Hiblot Cc: grant.likely@linaro.org, robh+dt@kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, gregory.clement@free-electrons.com, linux-arm-kernel@lists.infradead.org List-Id: devicetree@vger.kernel.org On Thu, Feb 13, 2014 at 10:57:09AM +0100, Jean-Jacques Hiblot wrote: > The goal of this patch is to allow drivers to be probed even if at the time of > the DT parsing some of their ressources are not available yet. > > In the current situation, the resource of a platform device are filled from the > DT at the time the device is created (of_device_alloc()). The drawbackof this > is that a device sitting close to the top of the DT (ahb for example) but > depending on ressources that are initialized later (IRQ domain dynamically > created for example) will fail to probe because the ressources don't exist > at this time. > > This patch fills the resource structure only before the device is probed and > will defer the probe if the resource are not available yet. > > Signed-off-by: Jean-Jacques Hiblot > Reviewed-by: Gregory CLEMENT > --- > drivers/base/platform.c | 6 ++++ > drivers/of/platform.c | 71 +++++++++++++++++++++++++++++---------------- > include/linux/of_platform.h | 10 +++++++ > 3 files changed, 62 insertions(+), 25 deletions(-) I need some others to ack this before I can take it...