QUP_ERROR_OUTPUT_UNDER_RUN 611 drivers/spi/spi-qup.c if (qup_err & QUP_ERROR_OUTPUT_UNDER_RUN) QUP_ERROR_OUTPUT_UNDER_RUN 1139 drivers/spi/spi-qup.c QUP_ERROR_INPUT_UNDER_RUN | QUP_ERROR_OUTPUT_UNDER_RUN,