linux-kernel - Re: [PATCH 06/15] ARM: etm: Add some missing locks and error checks

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Message-ID: <CACRpkdZfuC9Zyutno+MhrnYhDMdSr0-WOOtDzdMvrak8gpME+Q@mail.gmail.com>
Date:	Thu, 28 Jun 2012 17:56:55 +0200
From:	Linus Walleij <linus.walleij@...aro.org>
To:	John Stultz <john.stultz@...aro.org>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Arve Hjønnevåg <arve@...roid.com>,
	Russell King <linux@....linux.org.uk>,
	Paul Gortmaker <paul.gortmaker@...driver.com>,
	Alexander Shishkin <alexander.shishkin@...ux.intel.com>
Subject: Re: [PATCH 06/15] ARM: etm: Add some missing locks and error checks

On Thu, Jun 21, 2012 at 12:47 AM, John Stultz <john.stultz@...aro.org> wrote:

> From: Arve Hjønnevåg <arve@...roid.com>
>
> It is not safe to call etm_lock or etb_lock without holding the
> mutex since another thread may also have unlocked the registers.
>
> Also add some missing checks for valid etb_regs in the etm sysfs
> entries.
>
> CC: Russell King <linux@....linux.org.uk>
> CC: Paul Gortmaker <paul.gortmaker@...driver.com>
> CC: Alexander Shishkin <alexander.shishkin@...ux.intel.com>
> Acked-by: Alexander Shishkin <alexander.shishkin@...ux.intel.com>
> Signed-off-by: Arve Hjønnevåg <arve@...roid.com>
> Signed-off-by: John Stultz <john.stultz@...aro.org>

Acked-by: Linus Walleij <linus.walleij@...aro.org>

Yours,
Linus Walleij
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