From: Larry Finger <Larry.Finger@lwfinger.net>
To: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Cc: USB list <linux-usb@vger.kernel.org>,
LKML <linux-kernel@vger.kernel.org>, v4mp <gaigo88@hotmail.it>
Subject: Question about error from xhci-hcd
Date: Sat, 29 Oct 2011 12:48:12 -0500 [thread overview]
Message-ID: <4EAC3C5C.5000209@lwfinger.net> (raw)
Sarah,
Pardon the intrusion, but I'm trying to fix a problem for v4mp, a user of the
rtl8192cu driver on an Alfa AWUS036NHR. I have one of the devices, and it works
on a USB 2.0 hub, but fails with 3.0 hardware with lots of
xhci_hcd 0000:05:00.0: ERROR no room on ep ring
messages logged.
The device works with an out-of-kernel driver available from the Alfa or Realtek
web sites, but I want to fix rtl8192cu.
What condition leads to the above message? The user's dmesg buffer has wrapped,
thus I don't see the beginning of the failure. He is using a canned distro
kernel, thus he cannot include any extra debugging info such as a stack dump
when the errors occur. As he uses the compat-wireless package, I think I can
incorporate a new copy of xhci-hcd with it, but I have not done so yet.
Thanks for any help you can give,
Larry
next reply other threads:[~2011-10-29 17:47 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-10-29 17:48 Larry Finger [this message]
2011-10-30 5:04 ` Question about error from xhci-hcd Sarah Sharp
2011-10-30 15:30 ` Larry Finger
2011-11-01 16:06 ` Larry Finger
2011-11-14 9:18 ` Andiry Xu
2011-11-28 18:14 ` Sarah Sharp
2011-11-28 21:53 ` Larry Finger
2011-12-28 16:30 ` Larry Finger
2011-12-29 3:32 ` Andiry Xu
2011-12-29 3:55 ` Larry Finger
2011-12-29 4:30 ` Andiry Xu
2011-12-29 16:49 ` Larry Finger
-- strict thread matches above, loose matches on Subject: below --
2012-02-07 5:47 Richard Farina
2012-02-07 9:52 ` Andiry Xu
2012-02-07 13:30 ` Larry Finger
2012-02-07 14:55 ` Sarah Sharp
2012-02-07 19:28 ` Larry Finger
2012-02-07 14:59 ` Richard Farina
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