From: Linus Walleij <linus.walleij@linaro.org>
To: Maulik Shah <mkshah@codeaurora.org>
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>,
Marc Zyngier <maz@kernel.org>, Stephen Boyd <swboyd@chromium.org>,
Evan Green <evgreen@chromium.org>,
Matthias Kaehlcke <mka@chromium.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
MSM <linux-arm-msm@vger.kernel.org>,
"open list:GPIO SUBSYSTEM" <linux-gpio@vger.kernel.org>,
Andy Gross <agross@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
Jason Cooper <jason@lakedaemon.net>,
Doug Anderson <dianders@chromium.org>,
Rajendra Nayak <rnayak@codeaurora.org>,
Lina Iyer <ilina@codeaurora.org>,
lsrao@codeaurora.org
Subject: Re: [PATCH v2 1/4] gpio: gpiolib: Allow GPIO IRQs to lazy disable
Date: Thu, 28 May 2020 23:33:36 +0200 [thread overview]
Message-ID: <CACRpkdaMS2G6qLtGp05pZgUCGxdS2xA2a5_ahgrwqgzLmybWcg@mail.gmail.com> (raw)
In-Reply-To: <1590253873-11556-2-git-send-email-mkshah@codeaurora.org>
On Sat, May 23, 2020 at 7:11 PM Maulik Shah <mkshah@codeaurora.org> wrote:
> With 'commit 461c1a7d4733 ("gpiolib: override irq_enable/disable")' gpiolib
> overrides irqchip's irq_enable and irq_disable callbacks. If irq_disable
> callback is implemented then genirq takes unlazy path to disable irq.
>
> Underlying irqchip may not want to implement irq_disable callback to lazy
> disable irq when client drivers invokes disable_irq(). By overriding
> irq_disable callback, gpiolib ends up always unlazy disabling IRQ.
>
> Allow gpiolib to lazy disable IRQs by overriding irq_disable callback only
> if irqchip implemented irq_disable. In cases where irq_disable is not
> implemented irq_mask is overridden. Similarly override irq_enable callback
> only if irqchip implemented irq_enable otherwise irq_unmask is overridden.
>
> Fixes: 461c1a7d47 (gpiolib: override irq_enable/disable)
> Signed-off-by: Maulik Shah <mkshah@codeaurora.org>
I applied this patch 1/4 to the GPIO tree since it is nice on its own
and it is soon merge window.
Yours,
Linus Walleij
next prev parent reply other threads:[~2020-05-28 21:33 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-23 17:11 [PATCH v2 0/4] irqchip: qcom: pdc: Introduce irq_set_wake call Maulik Shah
2020-05-23 17:11 ` [PATCH v2 1/4] gpio: gpiolib: Allow GPIO IRQs to lazy disable Maulik Shah
2020-05-25 11:55 ` Linus Walleij
2020-05-25 12:22 ` Hans Verkuil
2020-05-26 4:45 ` Maulik Shah
2020-05-27 10:38 ` Hans Verkuil
2020-05-27 13:56 ` Linus Walleij
2020-05-27 14:15 ` Russell King - ARM Linux admin
2020-05-27 9:44 ` Stephen Boyd
2020-05-27 11:26 ` Maulik Shah
2020-05-28 1:08 ` Stephen Boyd
2020-05-28 13:11 ` Maulik Shah
2020-05-28 22:22 ` Stephen Boyd
2020-05-29 9:57 ` Maulik Shah
2020-05-28 21:33 ` Linus Walleij [this message]
2020-05-23 17:11 ` [PATCH v2 2/4] pinctrl: qcom: Remove irq_disable callback from msmgpio irqchip Maulik Shah
2020-05-23 17:11 ` [PATCH v2 3/4] pinctrl: qcom: Add msmgpio irqchip flags Maulik Shah
2020-05-27 9:47 ` Stephen Boyd
2020-05-27 12:30 ` Maulik Shah
2020-05-23 17:11 ` [PATCH v2 4/4] irqchip: qcom-pdc: Introduce irq_set_wake call Maulik Shah
2020-05-27 10:15 ` Stephen Boyd
2020-05-29 9:20 ` Maulik Shah
2020-05-30 19:26 ` Stephen Boyd
2020-06-01 11:38 ` Maulik Shah
2020-06-16 11:57 ` Stephen Boyd
2020-06-18 10:03 ` Maulik Shah
2020-06-19 9:26 ` Stephen Boyd
2020-06-22 9:19 ` Maulik Shah
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