linux-kernel - Question about error from xhci-hcd

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <4EAC3C5C.5000209@lwfinger.net>
Date:	Sat, 29 Oct 2011 12:48:12 -0500
From:	Larry Finger <Larry.Finger@...inger.net>
To:	Sarah Sharp <sarah.a.sharp@...ux.intel.com>
CC:	USB list <linux-usb@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>, v4mp <gaigo88@...mail.it>
Subject: Question about error from xhci-hcd

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

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/