linux-kernel - Firmware versioning best practices: ath3k-2.fw rename or replace ath3k-1.fw ?

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Date:	Fri, 8 Oct 2010 10:02:59 -0700
From:	"Luis R. Rodriguez" <lrodriguez@...eros.com>
To:	Suraj Sumangala <Suraj.Sumangala@...eros.com>,
	David Woodhouse <dwmw2@...radead.org>,
	Marcel Holtmann <marcel@...tmann.org>
CC:	linux-bluetooth <linux-bluetooth@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>,
	linux-wireless <linux-wireless@...r.kernel.org>
Subject: Firmware versioning best practices: ath3k-2.fw rename or replace
 ath3k-1.fw ?

Suraj,

What is the difference between ath3k-2.fw and ath3k-1.fw ?

Won't the API change now that you are addressing the sflash
configuration fix? Would it not help to identify the two
different firmwares then?

David, Marcel, what are your preferences for a firmware upgrade
where the firmware does not change API (lets just pretend it does
not for a moment) ? Do we keep the same filename?

In this particular case I would assume our new sflash configuration
fix that might be being worked on might change the re-enumerated
USB device IDs so it seems to me a good idea to use a new filename.
I should note ath3k-2.fw already made it to linux-firmware.git...

I last tried to document a thread we had over this here:

http://wireless.kernel.org/en/developers/Documentation/firmware-versioning

Does this sound sane? If so then the sflash configuration fix
would seem to me like it would require a new filename. Now, while
we're at it, how about bug fixes?

Suraj -- keep these discussions public please....

  Luis
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