linux-kernel - Re: [PATCH 1/2] clk: imx: do not sleep if IRQ's are still disabled

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Message-ID: <20160418015806.GR28903@tiger>
Date:	Mon, 18 Apr 2016 09:58:06 +0800
From:	Shawn Guo <shawnguo@...nel.org>
To:	Stephen Boyd <sboyd@...eaurora.org>
Cc:	Stefan Agner <stefan@...er.ch>, kernel@...gutronix.de,
	mturquette@...libre.com, linux-arm-kernel@...ts.infradead.org,
	linux-clk@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] clk: imx: do not sleep if IRQ's are still disabled

On Fri, Apr 15, 2016 at 06:00:53PM -0700, Stephen Boyd wrote:
> On 01/29, Stefan Agner wrote:
> > If a clock gets enabled early during boot time, it can lead to a PLL
> > startup. The wait_lock function makes sure that the PLL is really
> > stareted up before it gets used. However, the function sleeps which
> > leads to scheduling and an error:
> > bad: scheduling from the idle thread!
> > ...
> > 
> > Use udelay in case IRQ's are still disabled.
> > 
> > Signed-off-by: Stefan Agner <stefan@...er.ch>
> 
> This is really old. Shawn, are you picking these up? I'm removing
> these from my queue for now.

Yes, I'm picking them up.

Shawn