On Wed, 17 May 2006, Edward Averill wrote: > Ok, this is a weird one so please bear with me. > > I have a device that has two endpoints active - a USB Mass Storage > endpoint, and a vendor-specific endpoint that is used for debugging.
There's no such thing as a Mass Storage endpoint. Maybe you mean a Mass Storage interface. > When the device crashes, it electrically disconnects the USB and then > reconnects - gets re-enumerated, this time with ONLY the debug endpoint > - but my CATC bus analyzer shows FC4 still sending commands to the (now > nonexistent) mass storage endpoint! How can you be sure that the Mass Storage interface doesn't get enumerated? What shows up in /proc/bus/usb/devices? What does dmesg say? > Stranger still, disconnecting the crashed device, rebooting the FC4 box, > and plugging the device back in produces the same results - as if > somehow there's been some state set somewhere and the Linux box refuses > to believe that the mass storage portion of the device is gone even > though it's not returning it in the configuration when it's enumerated.. > > Windows handles this fine, which is a source of irritation to me (lol). > > All suggestions appreciated, this is causing some heartburn here. If you want the kernel's-eye-view of what happens during enumeration, use the usbmon facility. Instructions are in the kernel source, Documentation/usb/usbmon.txt. Alan Stern ------------------------------------------------------- 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 _______________________________________________ [email protected] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-users
