On Wed, Dec 09, 2015 at 02:45:37PM -0600, SaRaVanAn wrote: > Our device went for reset. So it starts loading and unloading the > serial USB port. Not good. > Here the serious concern is kernel lock. Once it happens the system > is unusable and hard reboot is the only way of recovering it. > > Kernel version is 3.12.0 3.12.0 is very old and unsupported, can you try to see if 4.3 solves this issue? Lots of tty and USB changes have gone into the kernel in the years since 3.12 was released. thanks, greg k-h -- 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