Hi Tudor, On Tue, 2024-01-23 at 15:34 +0000, Tudor Ambarus wrote: > @@ -538,13 +538,8 @@ static int s3c64xx_wait_for_dma(struct s3c64xx_spi_driver_data *sdd, > cpu_relax(); > status = readl(regs + S3C64XX_SPI_STATUS); > } > - > } > > - /* If timed out while checking rx/tx status return error */ > - if (!val) > - return -EIO; > - This change behaviour of this function. The loop just above adjusts val and it is used to determine if there was a timeout or not: if (val && !xfer->rx_buf) { val = msecs_to_loops(10); status = readl(regs + S3C64XX_SPI_STATUS); while ((TX_FIFO_LVL(status, sdd) || !S3C64XX_SPI_ST_TX_DONE(status, sdd)) && --val) { cpu_relax(); status = readl(regs + S3C64XX_SPI_STATUS); } That doesn't work anymore now. Cheers, Andre'