Andrew Morton wrote: > On Fri, 27 Jul 2007 13:37:08 -0700 > Nick Pasich <[EMAIL PROTECTED]> wrote: > >> >> Greg/Peter/Al, > > added linux-usb-devel. > >> I've been using the edgeport 4 port USB to Serial Converter >> to monitor APC Smart UPS's via apcupsd for quite awhile on >> various Linux boxes. >> >> I just upgraded to Kernel Version 2.6.22.1 from 2.6.20.6 on a >> couple of systems and both the edgeports stopped communicating. >> >> I tried applying various patches, "PATCH 026/149" and "PATCH 082/149" >> and one by Alan Cox.. but they didn't fix the problem. >> >> I copied the 2.6.20.6 edgeport module sources to the new >> 2.6.22.1 tree and everything works again. >> >> linux/drivers/usb/serial/io_edgeport.c >> linux/drivers/usb/serial/io_edgeport.h >> linux/drivers/usb/serial/io_edgeport.mod.c >> linux/drivers/usb/serial/io_tables.h > > Straightforward regression, most serious. Thanks for reporting it.
I don't know much of anything about usb-serial, but I'll take a whack at it. Could you enable debug for that driver, launch apcupsd, and report any intersting messages that show up in dmesg? I'd be especially interested in any "Not setting..." or "Not writing..." messages, because some critical-looking code for baud rate setting and similar became conditional in 2.6.22.1 whereas it was always executed before. Apcupsd is going to be rather unhappy if the baud rate doesn't change when it asks. The debug should show if the these operations are being ignored on your hw. --Adam ------------------------------------------------------------------------- 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/ _______________________________________________ linux-usb-devel@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
