linux-kernel - Re: [RFC,PATCH 1/3] Add a common struct clk

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Message-ID: <AANLkTi=5FNvWKQf6cRt4wNejC7u4XKsqLp9Pwc2Z45_3@mail.gmail.com>
Date:	Mon, 7 Feb 2011 11:59:26 -0800
From:	Colin Cross <ccross@...gle.com>
To:	Jeremy Kerr <jeremy.kerr@...onical.com>
Cc:	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	Nicolas Pitre <nicolas.pitre@...aro.org>,
	Lorenzo Pieralisi <Lorenzo.Pieralisi@....com>,
	Vincent Guittot <vincent.guittot@...aro.org>,
	linux-sh@...r.kernel.org,
	Ben Herrenschmidt <benh@...nel.crashing.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Paul Mundt <lethal@...ux-sh.org>,
	Dima Zavin <dmitriyz@...gle.com>,
	Saravana Kannan <skannan@...eaurora.org>,
	Ben Dooks <ben-linux@...ff.org>,
	Uwe Kleine-König 
	<u.kleine-koenig@...gutronix.de>,
	Russell King <linux@....linux.org.uk>
Subject: Re: [RFC,PATCH 1/3] Add a common struct clk

On Sun, Feb 6, 2011 at 10:07 PM, Jeremy Kerr <jeremy.kerr@...onical.com> wrote:
<snip>

> diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c
> new file mode 100644
> index 0000000..12e0daf
> --- /dev/null
> +++ b/drivers/clk/clk.c

<snip>

> +int clk_enable(struct clk *clk)
> +{
> +       int ret = 0;
> +
> +       if (!clk->ops->enable)
> +               return 0;
> +
> +       spin_lock(&clk->enable_lock);

spin_lock_irqsave/spin_unlock_irqrestore.  This could get called with
irqs on or off.
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