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Date: Mon, 11 Dec 2017 18:06:30 +0100
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From: Takashi Iwai <tiwai@suse.de>
To: Vinod Koul <vinod.koul@intel.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        LKML <linux-kernel@vger.kernel.org>,
        ALSA <alsa-devel@alsa-project.org>, Mark <broonie@kernel.org>,
        Pierre <pierre-louis.bossart@linux.intel.com>, patches.audio@intel.com,
        alan@linux.intel.com, Charles Keepax <ckeepax@opensource.cirrus.com>,
        Sagar Dharia <sdharia@codeaurora.org>, srinivas.kandagatla@linaro.org,
        plai@codeaurora.org, Sudheer Papothi <spapothi@codeaurora.org>
Subject: Re: [PATCH v5 04/15] soundwire: Add MIPI DisCo property helpers
In-Reply-To: <20171211170022.GT18649@localhost>
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On Mon, 11 Dec 2017 18:00:22 +0100,
Vinod Koul wrote:
> 
> On Mon, Dec 11, 2017 at 05:10:17PM +0100, Takashi Iwai wrote:
> > On Wed, 06 Dec 2017 16:47:00 +0100,
> > Vinod Koul wrote:
> > > 
> > > +		/* TODO: Read audio mode */
> > > +
> > > +		i++;
> > > +	}
> > 
> > Don't we use count argument for a sanity check?
> 
> Not really as that iterator runs on each bit:
> 
> for_each_set_bit(bit, &addr, 32) {
> 
> so it will not go on endlessly and can max out when all the bits being set
> and stop.

Yes, that shouldn't happen.  OTOH, only looking at the callee side,
one may wonder that the possible error would be dpn[] overflows the
given array size (=count).  Though, looking at both caller and callee,
one realizes that it shouldn't happen, too.
(But then again wonders why passing count argument at all :)


Takashi