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From: Alistair John Strachan <s0348365@sms.ed.ac.uk>
To: Duncan Sands <duncan.sands@free.fr>
Cc: linux-kernel@vger.kernel.org
Subject: speedtch driver, 2.6.14.2
Date: Wed, 23 Nov 2005 21:25:25 +0000	[thread overview]
Message-ID: <200511232125.25254.s0348365@sms.ed.ac.uk> (raw)

Hi Duncan,

I recently switched from the userspace speedtouch driver to the in-kernel one. 
However, on my rev 4.0 Speedtouch 330, I periodically get the message:

ATM dev 0: error -110 fetching device status

I suspect the source of this "error" is the warning message from speedtch:435:

	ret = speedtch_read_status(instance);
	if (ret < 0) {
		atm_warn(usbatm, "error %d fetching device status\n", ret);
		instance->poll_delay = min(2 * instance->poll_delay, MAX_POLL_DELAY);
		return;
	}

Tell me if I'm wrong, but I suspect speedtch_check_status() is called 
periodically to check line status. It may be the case that my modem does not 
like having its status read when it is sending/receiving data (which it is 
constantly doing).

Unfortunately the message eventually fills the dmesg ring buffer. My current 
workaround is to remove the atm_warn() call; everything works fine, but I'm 
concerned that the modem will not automatically reconnect if the connection 
drops as a result of the failure from speedtch_read_status().

Any suggestions for debugging this further? From a quick google I've noticed a 
recent Fedora bugzilla entry mentioning this same problem.

-- 
Cheers,
Alistair.

'No sense being pessimistic, it probably wouldn't work anyway.'
Third year Computer Science undergraduate.
1F2 55 South Clerk Street, Edinburgh, UK.

             reply	other threads:[~2005-11-23 21:25 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-11-23 21:25 Alistair John Strachan [this message]
2005-11-24  8:22 ` Duncan Sands
2005-11-24 17:01 ` Duncan Sands
2005-11-26 23:48   ` Alistair John Strachan
2005-11-27 22:58 ` Krzysztof Halasa
2005-11-28  8:29   ` Duncan Sands
2005-11-28 10:04     ` Krzysztof Halasa
2005-11-28 11:34       ` Duncan Sands
2005-11-28 17:18         ` Krzysztof Halasa
2005-11-29 11:14           ` Duncan Sands
2005-11-29 12:46             ` Krzysztof Halasa
2005-12-01  7:59               ` Duncan Sands
2005-12-01 15:17                 ` Krzysztof Halasa
2005-12-01 15:19                   ` Duncan Sands
2005-12-01 16:14                     ` Krzysztof Halasa
2005-12-02 16:46                   ` Duncan Sands
2005-11-28 11:44       ` Duncan Sands
2006-01-13 12:15 ` Duncan Sands
2006-01-13 13:33   ` Andrew Walrond
2006-01-13 19:08   ` Alistair John Strachan

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