On 2016-09-22 16:16:19 [+0200], Claudius Heine wrote: > Thanks for your help, but I am sorry to disappoint: I am surprised. You have UART and SPI sharing the interrupt and from output it is SPI that does not cooperate. Disable SPI and the warning/error should go. Maybe RT hits a condition the SPI driver return IRQ_NONE instead of doing something. > > Claudius Sebastian -- To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html