From: Pavel Roskin <proski@gnu.org>
To: ath9k-devel@lists.ath9k.org
Subject: [ath9k-devel] Disconnect problem (DMA failed to stop in 10 ms)
Date: Thu, 13 Aug 2009 01:40:42 -0400 [thread overview]
Message-ID: <1250142042.2352.26.camel@ct> (raw)
In-Reply-To: <19075.41714.450997.244874@gargle.gargle.HOWL>
On Thu, 2009-08-13 at 10:51 +0530, Sujith wrote:
> Pavel Roskin wrote:
> > sync_cause is always 0x2000 when that message is printed, so there are
> > no other causes.
>
> SYNC_LOCAL_TIMEOUT is generated when the PCIe core hangs, unable to complete
> a DMA transfer. I am able to see this with 9280, 9281 and 9287.
> So this seems to be a fundamental issue.
Such issues are notoriously hard :-(
If any ath9k version in the past didn't have that problem, I suggest
bisection.
Note that Michael noticed the performance degradation. That's another
target for bisection, whether it's related or not.
--
Regards,
Pavel Roskin
next prev parent reply other threads:[~2009-08-13 5:40 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-08-13 1:16 [ath9k-devel] Disconnect problem (DMA failed to stop in 10 ms) Michael Gruber
2009-08-13 3:45 ` Pavel Roskin
2009-08-13 3:54 ` Sujith
2009-08-13 4:22 ` Pavel Roskin
2009-08-13 5:21 ` Sujith
2009-08-13 5:40 ` Pavel Roskin [this message]
2009-08-18 18:16 ` Kunal Gangakhedkar
2009-08-18 21:04 ` Pavel Roskin
2009-08-18 21:07 ` Luis R. Rodriguez
2009-08-18 21:15 ` Pavel Roskin
2009-08-18 21:24 ` Luis R. Rodriguez
2009-08-18 21:45 ` Pavel Roskin
2009-08-18 21:57 ` Luis R. Rodriguez
2009-08-19 17:58 ` John W. Linville
2009-08-19 18:34 ` [ath9k-devel] bisecting with wireless-testing Luis R. Rodriguez
2009-08-19 18:34 ` Luis R. Rodriguez
2009-08-19 18:44 ` [ath9k-devel] " John W. Linville
2009-08-19 18:44 ` John W. Linville
2009-08-20 7:13 ` [ath9k-devel] Disconnect problem (DMA failed to stop in 10 ms) Kunal Gangakhedkar
2009-08-19 3:51 ` Sujith
2009-08-20 7:14 ` Kunal Gangakhedkar
2009-08-24 20:58 ` Kunal Gangakhedkar
2009-09-11 15:42 ` Kunal Gangakhedkar
2009-08-13 7:59 ` Kunal Gangakhedkar
[not found] <1253068000.2813.11.camel@localhost.localdomain>
2009-09-16 7:35 ` Kunal Gangakhedkar
2009-09-16 7:35 ` Kunal Gangakhedkar
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