linux-kernel - Re: [PATCH 08/18] net: dsa: mv88e6xxx: Add Hardware bridging support

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Date:	Sun, 22 Mar 2015 13:45:49 -0700
From:	Guenter Roeck <linux@...ck-us.net>
To:	Andrew Lunn <andrew@...n.ch>
CC:	netdev@...r.kernel.org, "David S. Miller" <davem@...emloft.net>,
	Florian Fainelli <f.fainelli@...il.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 08/18] net: dsa: mv88e6xxx: Add Hardware bridging support

On 03/22/2015 01:06 PM, Andrew Lunn wrote:
> Hi Guenter
>
>> +static int _mv88e6xxx_atu_cmd(struct dsa_switch *ds, int fid, u16 cmd)
>> +{
>> +	int ret;
>> +
>> +	ret = _mv88e6xxx_reg_write(ds, REG_GLOBAL, 0x01, fid);
>> +	if (ret < 0)
>> +		return ret;
>
> Please could you check this. I think register 0x01 here is wrong. I
> think you want 0x0b, the ATU Operations register?
>
The ATU operation is initiated below (and does write to register 0x0b).
Register 0x01 is FID[11..0] for ATU, which is what we want to write here.

Guenter

> Thanks
> 	Andrew
>
>> +
>> +	ret = _mv88e6xxx_reg_write(ds, REG_GLOBAL, 0x0b, cmd);
>> +	if (ret < 0)
>> +		return ret;
>> +
>> +	return _mv88e6xxx_atu_wait(ds);
>> +}
>> +
>

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