linux-kernel - Re: [PATCH] pinctrl: rockchip: add irq_enable & irq

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Message-ID: <1586348.DzvzNKqtLI@diego>
Date:   Tue, 14 Mar 2017 16:06:40 +0100
From:   Heiko Stübner <heiko@...ech.de>
To:     Linus Walleij <linus.walleij@...aro.org>
Cc:     Jeffy Chen <jeffy.chen@...k-chips.com>,
        "linux-gpio@...r.kernel.org" <linux-gpio@...r.kernel.org>,
        Brian Norris <briannorris@...omium.org>,
        Douglas Anderson <dianders@...omium.org>,
        Tomasz Figa <tfiga@...gle.com>,
        "open list:ARM/Rockchip SoC..." <linux-rockchip@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH] pinctrl: rockchip: add irq_enable & irq_disable ops

Hi Linus,

Am Dienstag, 14. März 2017, 16:03:48 CET schrieb Linus Walleij:
> On Thu, Mar 2, 2017 at 6:56 AM, Jeffy Chen <jeffy.chen@...k-chips.com> 
wrote:
> > Currently we are trying to enable/disable the clk of irq's gpio bank when
> > unmask/mask irq. But the kernel's "lazy disable approach" will skip
> > masking
> > irq when the irq chip doesn't support irq_disable ops.
> > 
> > So we may hit this case:
> >         irq_enable-> enable clk
> >         irq_disable-> noop
> >         irq_enable-> enable clk again
> >         irq_disable-> noop
> > 
> > Signed-off-by: Jeffy Chen <jeffy.chen@...k-chips.com>
> 
> Heiko, can you look at this patch?

This (and all the other pending pinctrl patches) are in my queue, but right 
now I'm still hunting rockchip regressions in 4.11-rc, so haven't found the 
time to review yet.


Heiko