netdev - Re: [PATCH net-next] bcm87xx: Add MODULE_DEVICE

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Date:	Tue, 3 Sep 2013 12:13:20 -0700
From:	David Daney <ddaney@...iumnetworks.com>
To:	Ben Hutchings <ben@...adent.org.uk>,
	David Miller <davem@...emloft.net>
CC:	David Daney <ddaney.cavm@...il.com>,
	David Daney <david.daney@...ium.com>,
	netdev <netdev@...r.kernel.org>
Subject: Re: [PATCH net-next] bcm87xx: Add MODULE_DEVICE_TABLE

On 09/03/2013 11:53 AM, Ben Hutchings wrote:
> On Tue, Sep 03, 2013 at 10:32:02AM -0700, David Daney wrote:
>> On 09/01/2013 02:33 PM, Ben Hutchings wrote:
>>> bcm87xx currently isn't auto-loaded if built as a module.
>>>
>>> Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
>>> ---
>>> Compile-tested only.
>>
>> Then how do you know that it does anything sensible?
>
> This is generally required in modular PHY drivers.  I was hoping you'd
> be able to say whether that it's useful or necessary for this one.


OK. I just tested the patch, and it is not sufficient to get the module 
loaded automatically.

My configuration also successfully uses drivers/net/phy/marvell.ko, so I 
think the modules.alias file is properly generated, and the auto-loading 
is working for some PHY drivers, but bcm87xx isn't detected.

I may take a look later this week, but as the patch stands, I don't 
think it should be merged.

David Daney


>
>> Other than that, it seems plausible.
>>
>> David Daney
>
> Thanks.
>
> Ben.
>
>>>
>>> Ben.
>>>
>>>   drivers/net/phy/bcm87xx.c | 7 +++++++
>>>   1 file changed, 7 insertions(+)
>>>
>>> diff --git a/drivers/net/phy/bcm87xx.c b/drivers/net/phy/bcm87xx.c
>>> index 7997895..f5b44ff 100644
>>> --- a/drivers/net/phy/bcm87xx.c
>>> +++ b/drivers/net/phy/bcm87xx.c
>>> @@ -230,4 +230,11 @@ static void __exit bcm87xx_exit(void)
>>>   }
>>>   module_exit(bcm87xx_exit);
>>>
>>> +static struct mdio_device_id __maybe_unused bcm87xx_tbl[] = {
>>> +	{ PHY_ID_BCM8706, 0xffffffff },
>>> +	{ PHY_ID_BCM8727, 0xffffffff },
>>> +	{ }
>>> +};
>>> +
>>>   MODULE_LICENSE("GPL");
>>> +MODULE_DEVICE_TABLE(mdio, bcm87xx_tbl);
>>>
>>
>

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