From: "Maróy Ákos" <akos@maroy.hu>
To: Oliver Neukum <oliver@neukum.org>
Cc: linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: cdc-acm driver hangs on poll() call - 2.6.27, works on 2.6.24
Date: Wed, 22 Apr 2009 15:25:00 +0200 [thread overview]
Message-ID: <49EF1AAC.3080802@maroy.hu> (raw)
In-Reply-To: <200904221514.34892.oliver@neukum.org>
Oliver,
> That's odd. I can't tell from the log. Can you make a usbmon trace?
sure:
cat /sys/kernel/debug/usbmon/1u
ffff880088545300 2462700154 S Ii:1:006:1 -115:8 8 <
ffff8800884b2600 2462700171 S Co:1:006:0 s 21 22 0003 0000 0000 0
ffff8800884b2600 2462701898 C Co:1:006:0 0 0
ffff880088545240 2462702064 S Bo:1:006:7 -115 6 = 060a0000 0000
ffff880088545900 2462702133 S Bi:1:006:2 -115 128 <
ffff880088545cc0 2462702142 S Bi:1:006:2 -115 128 <
ffff880088545600 2462702146 S Bi:1:006:2 -115 128 <
ffff8800885450c0 2462702150 S Bi:1:006:2 -115 128 <
ffff8800885453c0 2462702154 S Bi:1:006:2 -115 128 <
ffff880088545480 2462702158 S Bi:1:006:2 -115 128 <
ffff880088545180 2462702162 S Bi:1:006:2 -115 128 <
ffff8800885456c0 2462702166 S Bi:1:006:2 -115 128 <
ffff880088545540 2462702170 S Bi:1:006:2 -115 128 <
ffff880088545000 2462702174 S Bi:1:006:2 -115 128 <
ffff8800885459c0 2462702179 S Bi:1:006:2 -115 128 <
ffff880088545840 2462702183 S Bi:1:006:2 -115 128 <
ffff880088545f00 2462702187 S Bi:1:006:2 -115 128 <
ffff880088545c00 2462702191 S Bi:1:006:2 -115 128 <
ffff880088545b40 2462702199 S Bi:1:006:2 -115 128 <
ffff880088545a80 2462702202 S Bi:1:006:2 -115 128 <
this is where it hangs on poll(). then I press CTRL-C for the
application, then I get:
ffff88007c8e2b40 2502550672 S Co:1:006:0 s 21 22 0000 0000 0000 0
ffff88007c8e2b40 2502552140 C Co:1:006:0 0 0
ffff880088545300 2502553133 C Ii:1:006:1 -2:8 0
ffff880088545240 2502554132 C Bo:1:006:7 -2 0
ffff880088545a80 2502555132 C Bi:1:006:2 -2 0
ffff880088545b40 2502556132 C Bi:1:006:2 -2 0
ffff880088545c00 2502557132 C Bi:1:006:2 -2 0
ffff880088545f00 2502558132 C Bi:1:006:2 -2 0
ffff880088545840 2502559132 C Bi:1:006:2 -2 0
ffff8800885459c0 2502560131 C Bi:1:006:2 -2 0
ffff880088545000 2502561130 C Bi:1:006:2 -2 0
ffff880088545540 2502562126 C Bi:1:006:2 -2 0
ffff8800885456c0 2502563132 C Bi:1:006:2 -2 0
ffff880088545180 2502564131 C Bi:1:006:2 -2 0
ffff880088545480 2502565130 C Bi:1:006:2 -2 0
ffff8800885453c0 2502566125 C Bi:1:006:2 -2 0
ffff8800885450c0 2502567134 C Bi:1:006:2 -2 0
ffff880088545600 2502568134 C Bi:1:006:2 -2 0
ffff880088545cc0 2502569134 C Bi:1:006:2 -2 0
ffff880088545900 2502570134 C Bi:1:006:2 -2 0
Akos
next prev parent reply other threads:[~2009-04-22 13:25 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-04-21 13:04 cdc-acm driver hangs on poll() call - 2.6.27, works on 2.6.24 Maróy Ákos
2009-04-21 13:26 ` Oliver Neukum
2009-04-21 13:33 ` Maróy Ákos
2009-04-21 13:39 ` Oliver Neukum
2009-04-21 15:21 ` Maróy Ákos
2009-04-21 16:55 ` Maróy Ákos
2009-04-21 17:52 ` Oliver Neukum
2009-04-22 12:34 ` Maróy Ákos
2009-04-22 13:14 ` Oliver Neukum
2009-04-22 13:25 ` Maróy Ákos [this message]
2009-04-23 13:11 ` Oliver Neukum
2009-04-24 10:14 ` Maróy Ákos
2009-04-22 12:51 ` Maróy Ákos
2009-04-22 10:06 ` Maróy Ákos
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=49EF1AAC.3080802@maroy.hu \
--to=akos@maroy.hu \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-usb@vger.kernel.org \
--cc=oliver@neukum.org \
/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.