[Gta04-owner] Host AP mode

Andreas Kemnade andreas at kemnade.info
Thu May 31 08:14:35 CEST 2012


Hi,

On Thu, 31 May 2012 11:00:44 +1000
NeilBrown <neilb at suse.de> wrote:

>
> I can confirm that I see the same slowdown.
> 
> With 2.6.32, it reports a Bit Rate of 24Mb/s and a link quality of 39/100,
> and I get about 1.1 to 1.4 MB/s throughput.
> 
> With 3.4, it reports 5.5Mb/sec (and won't let me change it) with a link
> quality of 63/70 (!) and I get about 150 kB/s throughput.
> 
> So it does look like something is broken in 3.4.
> The difference between the hw kernel and 3.4 is 
> 
>  34 files changed, 5633 insertions(+), 3319 deletions(-)
> 
> which is quite a lot:
> 
> [,,,]
> 
> You would probably be better off posting a question to some relevant mailing list.
> Daniel Drake <dsd at laptop.org> seems to be the main contributor, so 'cc' him.
> Dan Williams <dcbw at redhat.com> is listed as the maintainer.
> libertas-dev at lists.infradead.org and linux-wireless at vger.kernel.org 
> seem to be the relevant email lists.
> 
I asked google a bit:

http://www.spinics.net/lists/linux-wireless/msg52355.html

To cite a bit:
> What SDIO host controller?  Does the host controller support interrupts
> and 4-bit mode?  We've always been able to get good performance out of
> laptop host controllers (Ricoh mostly) and the largest source of
> performance issues has always been quirky hardware or non-optimized SDHC
> drivers.  Are there any errata for your SDHC that you're aware of?

Greetings
Andreas Kemnade
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