linux-kernel - Re: [PATCH v2 net-next v2 12/12] net: dsa: mv88e6xxx: add addressing mode to info

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Date:	Tue, 14 Jun 2016 17:52:52 -0400
From:	Vivien Didelot <vivien.didelot@...oirfairelinux.com>
To:	Andrew Lunn <andrew@...n.ch>
Cc:	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	kernel@...oirfairelinux.com,
	"David S. Miller" <davem@...emloft.net>,
	Florian Fainelli <f.fainelli@...il.com>
Subject: Re: [PATCH v2 net-next v2 12/12] net: dsa: mv88e6xxx: add addressing mode to info

Hi Andrew,

Andrew Lunn <andrew@...n.ch> writes:

>> @@ -3681,7 +3681,7 @@ mv88e6xxx_smi_detect(struct device *dev, struct mii_bus *bus, int sw_addr,
>>  	u16 id;
>>  
>>  	ops = &mv88e6xxx_smi_direct_ops;
>> -	if (sw_addr > 0)
>> +	if (sw_addr > 0 && info->flags & MV88E6XXX_FLAG_MULTI_CHIP)
>>  		ops = &mv88e6xxx_smi_indirect_ops;
>
> Is sw_addr is > 0 and MV88E6XXX_FLAG_MULTI_CHIP is not set, you should
> return -EINVAL. The device tree is invalid.

OK, I'll change this snippet for the following until we explicitly add
support for such device with non-zero address and direct SMI access:

    if (sw_addr == 0)
        ops = &mv88e6xxx_smi_direct_ops;
    else if (info->flags & MV88E6XXX_FLAG_MULTI_CHIP)
        ops = &mv88e6xxx_smi_indirect_ops;
    else
        return NULL;

Thanks,

        Vivien