Re: Re: another must-fix: major PS/2 mouse problem
Donald Becker <[email protected]>
| Newsgroups | gmane.linux.drivers.vortex.devel |
|---|---|
| Message-ID | <Pine.LNX.4.44.0308101901230.10446-100000@beohost> |
On Tue, 29 Jul 2003, Chris Friesen wrote: > Andrew Morton wrote: > > > Last time I checked (which was about 18 months ago) the maximum > > interrupts-off time on a 500MHz desktop-class machine was 80 microseconds. > > You might want to bump that up a little bit. Querying carrier signal on > a tulip chip is 100usecs with interrupts off. [[ Yup, this is a late reply. I'm behind due to OLS and LinuxWorld. ]] My drivers, include the Tulip, don't read serial MII registers in the interrupt service during noraml operation. That would be a Very Bad Thing. (Exception: for a few chips there is a check in the rare case that the link changes during active operation.) Serial MII management operations should only be done during timer ticks and user-level ioctl() operations. -- Donald Becker [email protected] Scyld Computing Corporation http://www.scyld.com 914 Bay Ridge Road, Suite 220 Scyld Beowulf cluster system Annapolis MD 21403 410-990-9993 _______________________________________________ vortex mailing list [email protected] http://www.scyld.com/mailman/listinfo/vortex