[PATCH 1/3] of: Add prefix parameter to of_modalias_node().

[David Daney]

On 05/22/2012 01:09 PM, Grant Likely wrote:
> On Tue, May 22, 2012 at 1:45 PM, David Daney<ddaney.cavm at gmail.com>  wrote:
>> On 05/19/2012 11:08 PM, Grant Likely wrote:
>>>
>>> On Sat, 19 May 2012 23:54:36 -0600, Grant
>>> Likely<grant.likely at secretlab.ca>    wrote:
>>>>
>>>> On Fri, 11 May 2012 15:05:21 -0700, David Daney<ddaney.cavm at gmail.com>
>>>>   wrote:
>>>>>
>>>>> From: David Daney<david.daney at cavium.com>
>>>>>
>>>>> When generating MODALIASes, it is convenient to add things like "spi:"
>>>>> or "i2c:" to the front of the strings.  This allows the standard
>>>>> modprobe to find the right driver when automatically populating bus
>>>>> children from the device tree structure.
>>>>>
>>>>> Add a prefix parameter, and adjust callers.  For
>>>>> of_register_spi_devices() use the "spi:" prefix.
>>>>>
>>>>> Signed-off-by: David Daney<david.daney at cavium.com>
>>>>
>>>>
>>>> Applied, thanks.  Some notes below...
>>>
>>>
>>> Wait... why is this necessary?
>>
>>
>> Because in of_register_spi_devices() in of_spi.c, you do:
>>
>>         request_module(spi->modalias);
>>
>> The string passed to request_module() must have the "spi:" prefix.
>
> How about modifying the call to request_module() to include the prefix
> also?  I think that would be a simpler change overall.  Would that
> work?

It seems to.  I just sent such a patch in a new thread.

David Daney