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Message-ID: <55EEE071.7040506@linaro.org>
Date: Tue, 08 Sep 2015 21:19:45 +0800
From: Hanjun Guo <hanjun.guo@linaro.org>
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To: Marc Zyngier <marc.zyngier@arm.com>,
        "Rafael J. Wysocki" <rjw@rjwysocki.net>, Len Brown <lenb@kernel.org>,
        Tomasz Nowicki <tn@semihalf.com>, Thomas Gleixner <tglx@linutronix.de>,
        Jason Cooper <jason@lakedaemon.net>,
        Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
        Sudeep Holla <sudeep.holla@arm.com>, Will Deacon <will.deacon@arm.com>,
        Catalin Marinas <catalin.marinas@arm.com>
CC: linaro-acpi@lists.linaro.org, linux-acpi@vger.kernel.org,
        linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH 0/5] ACPI probing infrastructure
References: <1441386412-8139-1-git-send-email-marc.zyngier@arm.com>
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Hi Marc,

Sorry for the late response for quite a while...

On 09/05/2015 01:06 AM, Marc Zyngier wrote:
> IRQ controllers and timers are the two types of device the kernel
> requires before being able to use the device driver model.
>
> ACPI so far lacks a proper probing infrastructure similar to the one
> we have with DT, where we're able to declare IRQ chips and
> clocksources inside the driver code, and let the core code pick it up
> and call us back on a match. This leads to all kind of really ugly
> hacks all over the arm64 code and even in the ACPI layer.
>
> It turns out that providing such a probing infrastructure is rather
> easy, and provides a much deserved cleanup in both the arch code, the
> GIC driver, and the architected timer driver.
>
> I'm sure there is some more code to be deleted, and one can only
> wonder why this wasn't done before the arm64 code was initially merged
> (the diffstat says it all...).
>
> Patches are against v4.2, and a branch is available at
>
> git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms.git acpi/device-probing

Great thanks to cleanup these stuff, I will test
this patch set and review it, will get back to you
if I get anything.

Thanks
Hanjun