Hello, this series doesn't solve all my problems but at least some. Now for my remaining problem my machine at least doesn't reset (by watchdog) but disables the serial irq instead which at least allows to debug further. (Still I'm a bit out of ideas.) The last patch doesn't fix a real problem I have, just noticed that while working on the handshaking stuff. It would be great if these patched made it into v4.6-rc1. Best regards Uwe Uwe Kleine-König (4): serial: imx: reorder functions to simplify next patch serial: imx: implement handshaking irq handling for DTE mode serial: imx: let irq handler return IRQ_NONE if no event was handled serial: imx: only count 0->1 transitions for RNG drivers/tty/serial/imx.c | 152 +++++++++++++++++++++++++++++------------------ 1 file changed, 95 insertions(+), 57 deletions(-) -- 2.7.0 -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html