linux-kernel - Re: [RESEND PATCH 03/19] pinctrl: sunxi: Always call chained_irq_{enter, exit} in sunxi_pinctrl_irq

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Date:   Tue, 24 Nov 2020 09:41:49 +0100
From:   Linus Walleij <linus.walleij@...aro.org>
To:     Frank Lee <frank@...winnertech.com>
Cc:     Frank Lee <tiny.windzz@...il.com>,
        "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        stable <stable@...r.kernel.org>,
        Maxime Ripard <mripard@...nel.org>,
        Chen-Yu Tsai <wens@...e.org>
Subject: Re: [RESEND PATCH 03/19] pinctrl: sunxi: Always call
 chained_irq_{enter, exit} in sunxi_pinctrl_irq_handler

On Tue, Nov 10, 2020 at 7:24 AM Frank Lee <frank@...winnertech.com> wrote:

> From: Yangtao Li <frank@...winnertech.com>
>
> It is found on many allwinner soc that there is a low probability that
> the interrupt status cannot be read in sunxi_pinctrl_irq_handler. This
> will cause the interrupt status of a gpio bank to always be active on
> gic, preventing gic from responding to other spi interrupts correctly.
>
> So we should call the chained_irq_* each time enter sunxi_pinctrl_irq_handler().
>
> Cc: stable@...r.kernel.org
> Signed-off-by: Yangtao Li <frank@...winnertech.com>

Patch applied.

Yours,
Linus Walleij