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Date: Mon, 9 Jan 2017 13:30:20 +0300
From: Dan Carpenter <dan.carpenter@oracle.com>
To: SF Markus Elfring <elfring@users.sourceforge.net>
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Subject: Re: [PATCH 4/8] [media] videobuf-dma-sg: Adjust 24 checks for null
 values
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On Mon, Dec 26, 2016 at 09:48:19PM +0100, SF Markus Elfring wrote:
> From: Markus Elfring <elfring@users.sourceforge.net>
> Date: Mon, 26 Dec 2016 20:30:19 +0100
> 
> Convert comparisons with the preprocessor symbol "NULL" or the value "0"
> to condition checks without it.

Generally lengths are numbers and not booleans so "len == 0" is ok.
Checkpatch doesn't complain about that.

regards,
dan carpenter