All of lore.kernel.org
 help / color / mirror / Atom feed
From: Alan Stern <stern@rowland.harvard.edu>
To: Oliver Neukum <oneukum@suse.de>
Cc: Naveen Kumar Parna <pnaveenkos@gmail.com>,
	"linux-bluetooth@vger.kernel.org"
	<linux-bluetooth@vger.kernel.org>, <linux-usb@vger.kernel.org>,
	<acho@suse.com>
Subject: Re: btusb_intr_complete returns -EPIPE
Date: Wed, 8 Oct 2014 10:46:32 -0400 (EDT)	[thread overview]
Message-ID: <Pine.LNX.4.44L0.1410081045250.1633-100000@iolanthe.rowland.org> (raw)
In-Reply-To: <1412774247.1629.4.camel@linux-0dmf.site>

On Wed, 8 Oct 2014, Oliver Neukum wrote:

> On Wed, 2014-10-08 at 18:31 +0530, Naveen Kumar Parna wrote:
> > Later connected third device(hci2) and after 2mins observed –EPIPE for
> > hci2(hci2 urb ffff880124f11cc0 status -32 count 0)
> 
> This points to a problem in the USB HC driver.
> Can you enable debugging in that driver.

It could also be a bug in the hub that the BT devices are plugged into.  
I have seen a report of a hub that sends STALL when a bunch of devices 
are plugged in, even though the devices themselves did not send a 
STALL.

Alan Stern


  parent reply	other threads:[~2014-10-08 14:46 UTC|newest]

Thread overview: 45+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-10-06 11:35 btusb_intr_complete returns -EPIPE Naveen Kumar Parna
2014-10-06 12:24 ` Oliver Neukum
     [not found]   ` <CAG0bkv+nKt-TgONDLENNUncz9NScdJGcYR+J2Z6b=wg2grvqhg@mail.gmail.com>
2014-10-06 12:55     ` Oliver Neukum
2014-10-06 13:03       ` Naveen Kumar Parna
2014-10-06 13:29         ` Oliver Neukum
2014-10-06 14:38           ` Naveen Kumar Parna
2014-10-06 14:50             ` Oliver Neukum
     [not found]               ` <CAG0bkvKJZMhurNNpc_2wgaACRzhyEikb0G0YSY7QnxqBe1rnjw@mail.gmail.com>
2014-10-07  6:44                 ` Naveen Kumar Parna
2014-10-07 10:01                   ` Oliver Neukum
2014-10-07 13:34                     ` Naveen Kumar Parna
2014-10-07 14:31                       ` Naveen Kumar Parna
2014-10-08  9:09                         ` Oliver Neukum
2014-10-08 10:21                           ` Naveen Kumar Parna
2014-10-08 10:44                             ` Oliver Neukum
2014-10-08 13:01                               ` Naveen Kumar Parna
2014-10-08 13:17                                 ` Oliver Neukum
2014-10-08 14:10                                   ` Naveen Kumar Parna
2014-10-08 14:46                                   ` Alan Stern [this message]
2014-10-06 12:23 Naveen Kumar Parna
     [not found] <CAG0bkvJDLP2tgnzu7H_ZCRCnZwkw1zUd1uqWwoDkmrU_FLts7w@mail.gmail.com>
2014-10-09 14:31 ` Alan Stern
2014-10-15 10:11   ` Oliver Neukum
2014-10-15 13:09     ` Naveen Kumar Parna
2014-10-15 13:46       ` Naveen Kumar Parna
2014-10-15 16:11         ` Alan Stern
2014-10-16  7:13           ` Naveen Kumar Parna
2014-10-16 14:16             ` Alan Stern
2014-10-16 15:32               ` Naveen Kumar Parna
2014-10-28 12:40                 ` Naveen Kumar Parna
2014-10-28 17:27                   ` Alan Stern
     [not found]                     ` <CAG0bkvL-qy+Wvp7q39TOaQ1dZDd0PKyoXHjO=5TrJvdC8byr8A@mail.gmail.com>
2014-10-31 11:27                       ` Naveen Kumar Parna
2014-10-31 20:51                       ` Alan Stern
2014-10-16  9:15           ` Oliver Neukum
2014-10-16 10:54             ` Naveen Kumar Parna
2014-10-16 14:09               ` Alan Stern
2014-10-16 15:05                 ` Naveen Kumar Parna
2014-10-27  9:19                 ` Naveen Kumar Parna
     [not found] <CAG0bkv+YY90Tq1aTw1Dbg-RSVadoP2U6tyVpW1bZSxBfQ=3Y4g@mail.gmail.com>
2014-11-03 16:19 ` Alan Stern
2014-11-05  6:58   ` Naveen Kumar Parna
2014-11-05 21:09     ` Alan Stern
     [not found] <CAG0bkv+DL0bVs9irE7eUB3rC-J16Ue=b9+_TqeuTHJYMJDkC0g@mail.gmail.com>
2014-11-06 16:44 ` Alan Stern
2014-11-10  6:38   ` Naveen Kumar Parna
2014-11-10 16:56     ` Alan Stern
2014-11-11  9:53       ` Naveen Kumar Parna
2014-11-11 15:56         ` Alan Stern
2014-11-10  9:29   ` Naveen Kumar Parna

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=Pine.LNX.4.44L0.1410081045250.1633-100000@iolanthe.rowland.org \
    --to=stern@rowland.harvard.edu \
    --cc=acho@suse.com \
    --cc=linux-bluetooth@vger.kernel.org \
    --cc=linux-usb@vger.kernel.org \
    --cc=oneukum@suse.de \
    --cc=pnaveenkos@gmail.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.