On Sun, Dec 08, 2013 at 01:46:29PM -0300, Ismael Luceno wrote: > Hi. > > I'm using a small script to periodically talk to devices over RS232. > > For simplicity I decided to use "chat". Once in a while, every about > 25000 cycles, the usb converter stops working. > > Removing and re-adding the driver doesn't work, neither does > disconnecting the device, only a reboot fixes the issue. What kernel version are you using? > TCGETA and TCSETA ioctls seem to be failing with ENOTTY, probably the > same with others. > > lsusb output: > Bus 003 Device 003: ID 067b:2303 Prolific Technology, Inc. PL2303 > Serial Port > > The kernel log doesn't show anything useful. That would be quite odd. > Any ideas? Could you try to reproduce this on a recent kernel (e.g. v3.12.5) and post the logs without and, if possible, with debugging enabled when the problem occurs? Thanks, Johan -- 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
