linux-kernel - Re: [PATCH RFT 1/2] gpio: gpio-ml-ioh: Use spinlock for register access protection

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Message-ID: <CACRpkdaLUCe8_cuYh_pq7HUKkWhaSXS6xEU=ZwbpoUcy9nCz4w@mail.gmail.com>
Date:	Mon, 13 Aug 2012 14:01:31 +0200
From:	Linus Walleij <linus.walleij@...aro.org>
To:	Feng Tang <feng.tang@...el.com>,
	Tomoya MORINAGA <tomoya.rohm@...il.com>
Cc:	linux-kernel@...r.kernel.org,
	Grant Likely <grant.likely@...retlab.ca>,
	Axel Lin <axel.lin@...il.com>
Subject: Re: [PATCH RFT 1/2] gpio: gpio-ml-ioh: Use spinlock for register
 access protection

On Sun, Jul 29, 2012 at 4:54 AM, Axel Lin <axel.lin@...il.com> wrote:

> gpio_chip.can_sleep is 0, but current code uses mutex in ioh_gpio_set,
> ioh_gpio_get and ioh_gpio_direction_input functions.
> Thus those functions are not callable from interrupt context.
> This patch converts mutex into spinlock.
>
> Signed-off-by: Axel Lin <axel.lin@...il.com>

So IOH guys what are you saying about this?

If you say nothing I will apply these patches.

Yours,
Linus Walleij
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