netdev - Re: [PATCH/RFC v2 net-next] ravb: unmap descriptors when freeing rings

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Message-ID: <d840eddd-f6a3-fe8c-dbaa-242c117b5274@marvell.com>
Date:   Thu, 12 Jan 2017 14:23:48 +0100
From:   Lino Sanfilippo <lsanfil@...vell.com>
To:     Simon Horman <horms@...ge.net.au>,
        Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
CC:     David Miller <davem@...emloft.net>,
        Magnus Damm <magnus.damm@...il.com>, <netdev@...r.kernel.org>,
        <linux-renesas-soc@...r.kernel.org>
Subject: Re: [PATCH/RFC v2 net-next] ravb: unmap descriptors when freeing
 rings

Hi,

On 12.01.2017 10:11, Simon Horman wrote:

>>> +
>>> +	for (; priv->cur_tx[q] - priv->dirty_tx[q] > 0; priv->dirty_tx[q]++) {

BTW: How can this work correctly when cur_tx wraps and dirty_tx is greater?

Regards,
Lino