linux-kernel - Re: [Patch RFC 23/37] usb: gadgetfs: Convert semaphore to mutex

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Message-Id: <1248648999.28841.6.camel@desktop>
Date:	Sun, 26 Jul 2009 15:56:39 -0700
From:	Daniel Walker <dwalker@...o99.com>
To:	Thomas Gleixner <tglx@...utronix.de>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Ingo Molnar <mingo@...e.hu>,
	Peter Zijlstra <peterz@...radead.org>,
	Greg Kroah-Hartman <gregkh@...e.de>
Subject: Re: [Patch RFC 23/37] usb: gadgetfs: Convert semaphore to mutex

On Sun, 2009-07-26 at 08:18 +0000, Thomas Gleixner wrote:
> -               if (down_trylock (&epdata->lock) != 0)
> +               if (mutex_trylock(&epdata->lock) != 0)


You forget the mutex_trylock has an inverted return value..

Daniel

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