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SubjectRe: [PATCH v3] net: e1000e: add MAC address kernel cmd line parameter
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From: Andrew Lunn <andrew@lunn.ch>
Date: Thu, 28 Feb 2019 20:29:58 +0100

> On Thu, Feb 28, 2019 at 05:13:27PM +0000, Flavio Suligoi wrote:
>> > > Hi Andrew,
>> > >
>> > > we produce a lot of boards and we have to change the MAC address,
>> > > from u-boot, for every board. So I must save in the u-boot
>> > > environment (SPI NOR flash) the MAC address for every board.
>> >
>> > Hi Flavio
>> >
>> > u-boot should be able to write the MAC address in the correct part of
>> > device tree. Boards have been doing this a long time.
>> >
>> > Module parameters are considered bad. You should only do it if you
>> > have no other option. Here you do have another options, so it is going
>> > to be a hard sell getting David to access your patch.
>> >
>> > You will have more success by adding a call to
>> > eth_platform_get_mac_address() to the e1000e driver.
>>
>> You have right, and thanks for your suggestions,
>> but with a kernel parameter I can use the same method
>> for any board where the NVM is missed, independently of any architecture
>> (with or without the device tree presence - ARM or x86 or others).
>
> Hi Flavio
>
> Well, lets wait for David to say what he thinks about the module
> parameter.

I already rejected this, no way... Drivers that already have the
unacceptable module parameter are no an argument for spreading this
mistake further.

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