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

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Date:   Tue, 13 Mar 2018 16:38:42 +0000
From:   "Luis R. Rodriguez" <mcgrof@...nel.org>
To:     Kalle Valo <kvalo@...eaurora.org>
Cc:     "Luis R. Rodriguez" <mcgrof@...nel.org>,
        Arend van Spriel <arend.vanspriel@...adcom.com>,
        Andres Rodriguez <andresx7@...il.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 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?

  Luis