I have tried, but it doesn't works.The g_serial even can't be connected. I dont't know why, I'm not familiar with tty layer. PS: Should we write a console for g_serial? I think it may be as useful as real serial on code debug in handheld device. 2010/1/21 Alan Cox <alan@xxxxxxxxxxxxxxxxxxx>: > On Thu, 21 Jan 2010 14:03:40 +0800 > River Wang <coredump007@xxxxxxxxx> wrote: > >> Hi All: >> When tty->low_latency = 1, tty_flip_buffer_push() may sleep in >> tasklet context which will lead to a kernel crash.We use >> workqueue instead of tasklet. > > Surely it would be simpler to not set tty->low_latency, and call the > tty_flip_buffer_push directly from the received URB handler. The tty > layer will then handle the workqueue stuff itself. > -- 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