linux-kernel - Re: [PATCH v24 08/11] acpi: Introduce acpi_unregister

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Date:   Wed, 19 Apr 2017 16:09:16 +0100
From:   Mark Rutland <mark.rutland@....com>
To:     fu.wei@...aro.org, rjw@...ysocki.net, lenb@...nel.org,
        lorenzo.pieralisi@....com, hanjun.guo@...aro.org
Cc:     linaro-acpi@...ts.linaro.org, catalin.marinas@....com,
        will.deacon@....com, rruigrok@...eaurora.org, wim@...ana.be,
        wei@...hat.com, al.stone@...aro.org, tn@...ihalf.com,
        timur@...eaurora.org, daniel.lezcano@...aro.org,
        linux-acpi@...r.kernel.org, linux@...ck-us.net,
        harba@...eaurora.org, julien.grall@....com,
        linux-watchdog@...r.kernel.org, arnd@...db.de,
        marc.zyngier@....com, jcm@...hat.com, cov@...eaurora.org,
        tglx@...utronix.de, linux-arm-kernel@...ts.infradead.org,
        graeme.gregory@...aro.org, linux-kernel@...r.kernel.org,
        leo.duran@....com, Suravee.Suthikulpanit@....com,
        sudeep.holla@....com, christoffer.dall@...aro.org
Subject: Re: [PATCH v24 08/11] acpi: Introduce acpi_unregister_irq function

On Tue, Apr 18, 2017 at 04:58:41PM +0100, Mark Rutland wrote:
> On Sat, Apr 15, 2017 at 02:40:11AM +0800, fu.wei@...aro.org wrote:
> > From: Fu Wei <fu.wei@...aro.org>
> > 
> > This patch introduces acpi_unregister_irq function to free a
> > linux IRQ number<->GSI mapping by a given linux IRQ number.
> > 
> > Even we have successfully registered the GSI, when some error occurs, we
> > may need to unmap it for freeing the IRQ resource. But in some cases, we
> > only have IRQ, but not GSI.
> > 
> > This patch is the preparation for memory-mapped timer support in GTDT
> > driver.
> > 
> > Signed-off-by: Fu Wei <fu.wei@...aro.org>
> > ---
> >  drivers/acpi/irq.c   | 10 ++++++++++
> >  include/linux/acpi.h |  7 +++++++
> >  2 files changed, 17 insertions(+)
> 
> This will need comments/acks from the ACPI folk.

I've now reworked the cleanup to not require this API, and will drop
this patch.

Thanks,
Mark.