linux-kernel - Re: [PATCH 2/5] ASoC: dwc: Don't allow negative use counts

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Message-ID: <20141203172526.GC7712@sirena.org.uk>
Date:	Wed, 3 Dec 2014 17:25:26 +0000
From:	Mark Brown <broonie@...nel.org>
To:	Andrew Jackson <Andrew.Jackson@....com>
Cc:	Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.de>,
	"alsa-devel@...a-project.org" <alsa-devel@...a-project.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Rajeev Kumar <rajeevkumar.linux@...il.com>,
	Liam Girdwood <lgirdwood@...il.com>,
	Liviu Dudau <Liviu.Dudau@....com>
Subject: Re: [PATCH 2/5] ASoC: dwc: Don't allow negative use counts

On Wed, Dec 03, 2014 at 04:38:55PM +0000, Andrew Jackson wrote:

>  	case SNDRV_PCM_TRIGGER_STOP:
>  	case SNDRV_PCM_TRIGGER_SUSPEND:
>  	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
> -		dev->active--;
> +		if (dev->active > 0)
> +			dev->active--;

How is this triggering - this sounds like you're papering over some
other bug somewhere?

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