linux-kernel - Re: Staging tree status for the .32 kernel merge

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Date:	Thu, 3 Sep 2009 14:48:43 +0200
From:	"Stefan Lippers-Hollmann" <s.L-H@....de>
To:	Greg KH <greg@...ah.com>
Cc:	Johannes Berg <johannes@...solutions.net>,
	linux-kernel@...r.kernel.org, devel@...uxdriverproject.org,
	Kalle Valo <kalle.valo@....fi>
Subject: Re: Staging tree status for the .32 kernel merge

Hi

On Thursday 03 September 2009, Johannes Berg wrote:
> Hi Greg,
[...]
> > 	- at76_usb wireless driver.  Again, no one working on it, it
> > 	  will be dropped in .33.
> 
> There's at76c...something...-usb now, with a situation similar to the
> ar9170/otus one.
[...]

at76c50x-usb, the mac80211 port of at76_usb, has been merged mainline in 
2.6.30, it works well on two at76c503a devices for me. 

Performance and features are comparable (there were WPA patches[1] around, 
CCMP for at76c505 devices only, but due to stability issues with the newer 
firmware, they weren't merged in staging or at76c50x-usb); both drivers 
sport an identical device coverage. The 802.11b chipsets themselves are 
no longer in production, but were rather common (also in handhelds) around 
6-9 years ago. In their current state, at76_usb and at76c50x-usb are 
restricted to WEP64/ 128 or unencrypted networks and work equally well 
(at76c50x-usb without the strange quirks that happen with at76_usb).

AT76C503A specification summary:
http://www.atmel.com/dyn/resources/prod_documents/1949S.PDF

AT76C505 specification summary:
http://www.atmel.com/atmel/acrobat/2364s.pdf

[1]	Original WPA patches:
	https://lists.berlios.de/pipermail/at76c503a-develop/2008-May/000240.html

Regards
	Stefan Lippers-Hollmann
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