Hello Koen, On Fri, Mar 09, 2018 at 09:30:28AM +0000, Ian Arkver wrote: > On 09/03/18 08:28, Koen Vandeputte wrote: > > Hopefully I'm on the right list :) > > > > > > Using a Gateworks Ventana board, powered by an i.MX6 soc, [1] > > following errors were notice upon boot: > > > > [ 22.617622] imx-uart 2020000.serial: DMA transaction error. > > [ 22.623228] imx-uart 2020000.serial: DMA transaction error. > > [ 22.628826] imx-uart 2020000.serial: DMA transaction error. > > [ 22.648951] imx-uart 2020000.serial: DMA transaction error. > > [ 22.654558] imx-uart 2020000.serial: DMA transaction error. > > [ 22.660156] imx-uart 2020000.serial: DMA transaction error. There is a patch in next touching this message: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/drivers/tty/serial/imx.c?id=45ca673e81df80f24a575e0a9a4e33c1f865ad08 If this doesn't help, what is the event that makes the driver emit that message? (Send a break? just big volume receiving? ...?) With the above patch applied you might see the error counters increase. (They are exposed in /proc/tty/driver/IMX-uart.) Best regards Uwe -- Pengutronix e.K. | Uwe Kleine-König | Industrial Linux Solutions | http://www.pengutronix.de/ | -- 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
