Re: disconnect on one usb2.0 port corrupts the communication on the other
Oliver Neukum <[email protected]>
| Newsgroups | gmane.linux.usb.devel |
|---|---|
| Message-ID | <[email protected]> |
Am Donnerstag 18 Oktober 2007 schrieb Oliver Neukum: > Am Mittwoch 17 Oktober 2007 schrieb Alan Stern: > > > switching the ports to USB 1.1 (through bios or /sys/class/usb_hub/usb_hub/companion) > > > avoids the error, but is not satisfying solution. > > > > > > Does anyone know of this error and/or of an available fix /patch /workarounds? > > > > No idea what the problem is. Suggestions are welcome. > > Introduce a guard time after unplugs for which reset is delayed? OK, I should elaborate. 1. It seems like the original fault is caused by hardware. Therefore we can do nothing about it and must concentrate on error recovery. 2. Later on, reset must work, or we'd have bug reports about that long ago. Therefore there should be a time window during which the hardware is dealing with its internal troubles due to device removal, during which we should not mess around with other devices. Regards Oliver ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ [email protected] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel