linux-kernel - Re: [patch] i8253: Convert i8253_lock to raw

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Message-ID: <20100217165741.GA5504@linux-mips.org>
Date:	Wed, 17 Feb 2010 17:57:41 +0100
From:	Ralf Baechle <ralf@...ux-mips.org>
To:	Thomas Gleixner <tglx@...utronix.de>
Cc:	LKML <linux-kernel@...r.kernel.org>, x86 team <x86@...nel.org>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Takashi Iwai <tiwai@...e.de>,
	Jens Axboe <jens.axboe@...cle.com>
Subject: Re: [patch] i8253: Convert i8253_lock to raw_spinlock

On Wed, Feb 17, 2010 at 04:47:10PM -0000, Thomas Gleixner wrote:

> i8253_lock needs to be a real spinlock in preempt-rt, i.e. it can
> not be converted to a sleeping lock.
> 
> Convert it to raw_spinlock and fix up all users.
> 
> Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
> Cc: Ralf Baechle <ralf@...ux-mips.org>
> Cc: Dmitry Torokhov <dmitry.torokhov@...il.com>
> Cc: Takashi Iwai <tiwai@...e.de>
> Cc: Jens Axboe <jens.axboe@...cle.com>

Acked-by: Ralf Baechle <ralf@...ux-mips.org>

  Ralf
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