Problem with new bwn driver on -CURRENT
Weongyo Jeong
weongyo.jeong at gmail.com
Sat Mar 6 00:16:54 UTC 2010
On Fri, Mar 05, 2010 at 04:44:34PM -0500, Joe Marcus Clarke wrote:
> On 3/5/10 3:53 PM, Weongyo Jeong wrote:
> > On Thu, Mar 04, 2010 at 12:12:02AM -0500, Joe Marcus Clarke wrote:
> >> On Wed, 2010-03-03 at 15:14 -0800, Weongyo Jeong wrote:
> >>>> When it occurs again, I will get you the details and the full dmesg. Do
> >>>> you want a verbose dmesg, or a standard one?
> >>>
> >>> I think a standard one is enough. Thank you.
> >>
> >> Here you go. This is on -CURRENT from about 30 minutes ago. Thanks for
> >> looking into this.
> >>
> >> http://www.marcuscom.com/downloads/salami.dmesg
> >
> > Thank you for dmesg. It looks using PIO mode is only a way to avoid
> > this problem.
> >
> > I looked sources and problems of other Broadcom wireless driver for LP
> > PHY users. They also encounters this issue and are trying to solve
> > this but no luck and no perfect patch until now.
> >
> > Recently AFAIK wireless-test git of linux adopted a patch `gracefully
> > convert DMA to PIO mode' to solve it.
> >
> > Additionally some guys tolds some success story when they disabled ACPI
> > but it looks it's not a perfect solution.
> >
> > IIRC you said PIO worked for association with your AP but no further
> > traffic. However I wonder that this is weird for me because paths of
> > sending management frames and sending data frames are same. Could you
> > please recheck whether PIO mode worked? I'll try to test PIO mode on my
> > environment again.
>
> I can absolutely confirm PIO mode does NOT work with my card. I tested
> on a clean power-up. The card associates, but does not pass any
> traffic. I do not see the same decryption messages that I do with DMA mode.
OK. I'd like to see some verbose message from bwn(4) after applying
attached patch with email. Could you please test with it and show me
dmesg?
I tested 3 broadcom card whose revisions are 5 and 9 and it looks it's
working.
I have one LP PHY device, half MiniPCI-E for laptop, but could not test
with this patch because I could not turn on RF; it's connected with
desktop using converter MiniPCI-E to PCI-E though normally it looks
MiniPCI-E devices are turned on using H/W RF switch.
regards,
Weongyo Jeong
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