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From: Andy Shevchenko <andy.shevchenko@gmail.com>
To: Nikita Shubin <nikita.shubin@maquefel.me>
Cc: Linus Walleij <linus.walleij@linaro.org>,
	Bartosz Golaszewski <bgolaszewski@baylibre.com>,
	"open list:GPIO SUBSYSTEM" <linux-gpio@vger.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [RFC PATCH 0/3] gpio: ep93xx: convert to multi irqchips
Date: Sat, 26 Dec 2020 19:34:26 +0200	[thread overview]
Message-ID: <CAHp75VfJ_3XKhFeQv9h0QDeeS4TrNH0aKUXUD3BBff0xUCAf0Q@mail.gmail.com> (raw)
In-Reply-To: <20201224112203.7174-1-nikita.shubin@maquefel.me>

On Thu, Dec 24, 2020 at 1:24 PM Nikita Shubin <nikita.shubin@maquefel.me> wrote:
>
> I was lucky enough to became an owner of some splendid piece's of
> antiques called ts7250 based on the top of Cirrus Logic EP9302.
>
> I don't know what fate expects this hardware (it's not EOL it's just Not
> recommended for new designs) but i wanted to share fixes in ep93xx gpio area.
>
> It seems ep93xx is deadly broken at current state usage of AB gpiochips
> interrupts leads to deadlocks coused by irq_unmask/irq_mask recursions.

I personally consider it quite nice to have support even for outdated
hardware (reminds me about a recent LWN article about 32-bit
architectures and a comment there how it could affect the environment
if we drop them from being supported).

So I fully support this series.

-- 
With Best Regards,
Andy Shevchenko

  parent reply	other threads:[~2020-12-26 17:35 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-12-24 11:22 [RFC PATCH 0/3] gpio: ep93xx: convert to multi irqchips Nikita Shubin
2020-12-24 11:22 ` [RFC PATCH 1/3] " Nikita Shubin
2020-12-26 17:52   ` Andy Shevchenko
2020-12-28 15:05     ` nikita.shubin
2020-12-24 11:22 ` [RFC PATCH 2/3] gpio: ep93xx: drop to_irq binding Nikita Shubin
2020-12-27 21:21   ` Linus Walleij
2021-01-04 14:17     ` Bartosz Golaszewski
2020-12-24 11:22 ` [RFC PATCH 3/3] gpio: ep93xx: specify gpio_irq_chip->first Nikita Shubin
2020-12-27 21:22   ` Linus Walleij
2020-12-26 17:34 ` Andy Shevchenko [this message]
2020-12-27 14:00   ` [RFC PATCH 0/3] gpio: ep93xx: convert to multi irqchips Linus Walleij
2020-12-27 13:55 ` Linus Walleij
2020-12-28 15:14   ` nikita.shubin
2020-12-28 20:41     ` Linus Walleij

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