On Fri, 24 Jul 2009, Ramya Desai wrote: > I am attaching the usbmon log file. This file has been collected after > rebooting the PC( as the PC hangs after making multiple reads/writes > to the gadget). > > I was unable to analyze this file as it contains raw data. The usbmon log shows what the problem is. Something in your system is trying to pass data in high memory to dummy-hcd, which can't handle it. It's probably a bug somewhere in the block layer. You should try using a more recent kernel, such as 2.6.30 or 2.6.31-rc4. Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html