On Thu, Aug 31, 2006 at 03:36:42AM -0700, David Brownell wrote: > > USB on many system-on-chip processors also has less aggressive sleep > states, where for example USB port power might be maintained, and > the root hub clocked enough to detect simple events like "remote > wakeup", "connect new device", and "disconnect device" ... and then > use those as system wakeup events.
Not my case since the CPU goes in a power-off mode and can be resumed only throught few pins. > That's correct for the "power fully off" mode, yes. Maybe you can So, no way to have a rootfs on a USBkey and the suspend/resume support. > do better than that; see how ohci-at91.c will keep USB active during > "standby" sleep, that's the best in-tree example today. It disables only the clocks... it seems a "poor" suspend/resume support... > But in general, userspace should be assuming that all removable > media will have been removed by the time the system comes back up, > and have prepared for it. Unmounting would be a nice safe policy, > but if userspace knows the system will sleep and is _not_ ready for > the media to be removed, that's a userspace bug. Mmm... it doesn't seem so flexible. What happens if umount fails? I can't suspend the system? :-o Thanks, Rodolfo -- GNU/Linux Solutions e-mail: [EMAIL PROTECTED] Linux Device Driver [EMAIL PROTECTED] Embedded Systems [EMAIL PROTECTED] UNIX programming phone: +39 349 2432127 ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ linux-usb-devel@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
