linux-kernel - Re: [PATCH] firmware: add a function to load optional firmware v2

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Date:   Mon, 19 Mar 2018 22:21:54 -0400
From:   Andres Rodriguez <andresx7@...il.com>
To:     "Luis R. Rodriguez" <mcgrof@...nel.org>,
        Kalle Valo <kvalo@...eaurora.org>
Cc:     andresx7@...il.com,
        Arend van Spriel <arend.vanspriel@...adcom.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-wireless <linux-wireless@...r.kernel.org>,
        Ilia Mirkin <imirkin@...m.mit.edu>
Subject: Re: [PATCH] firmware: add a function to load optional firmware v2



On 2018-03-13 12:38 PM, Luis R. Rodriguez wrote:
> On Tue, Mar 13, 2018 at 03:39:23PM +0200, Kalle Valo wrote:
>> "Luis R. Rodriguez" <mcgrof@...nel.org> writes:
>>
>>> On Mon, Mar 12, 2018 at 12:10:47AM +0100, Arend van Spriel wrote:
>>>> On 3/11/2018 5:05 PM, Andres Rodriguez wrote:
>>>>>> Your patch series then should also have the driver callers who you
>>>>>> want to modify to use this new API. Collect from the 802.11 folks the
>>>>>> other drivers which I think they wanted changed as well.
>>>>>
>>>>> Arend, Kalle, would love to hear your feedback.
>>>>
>>>> I am not sure if it was ath10k, but Kalle will surely know. The other driver
>>>> firing a whole batch of firmware requests is iwlwifi. These basically try to
>>>> get latest firmware version and if not there try an older one.
>>>
>>> Ah I recall now. At least for iwlwifi its that it requests firmware with a
>>> range of api files, and we don't need information about files in the middle
>>> not found, given all we need to know if is if at lest one file was found
>>> or not.
>>>
>>> I have future code to also enable use of a range request which would replace
>>> the recursive nature of iwlwifi's firmware API request, so it simplifies it
>>> considerably.
>>>
>>> Once we get this flag to be silent in, this can be used later. Ie, the new
>>> API I'd add would replace the complex api revision thing for an internal set.
>>
>> TBH I doubt we would use this kind of "range" request in ath10k,
> 
> Well it doesn't have the form to use a range either so it wouldn't make sense.
> 
>> the
>> current code works just fine only if we can get rid of the annoying
>> warning from request_firmware(). Unless if it's significantly faster or
>> something.
> 
> Thanks, I see ath10k uses the sync request_firmware() call, so indeed it
> would be a trivial conversion.
> 
> Andres can you roll that in for your patch series?
> 

Can do, although it will take a while. Kidney stone woes and other life 
things are keeping me busy for the following weeks.

Sorry for the delay.

Kind Regards,
Andres

>    Luis
>