On Tuesday 11 August 2015 18:43:09 Leilk Liu wrote: > @@ -359,9 +359,11 @@ static void mtk_spi_setup_dma_addr(struct spi_master *master, > struct mtk_spi *mdata = spi_master_get_devdata(master); > > if (mdata->tx_sgl) > - writel(cpu_to_le32(xfer->tx_dma), mdata->base + SPI_TX_SRC_REG); > + writel((__force u32)cpu_to_le32(xfer->tx_dma), > + mdata->base + SPI_TX_SRC_REG); > if (mdata->rx_sgl) > - writel(cpu_to_le32(xfer->rx_dma), mdata->base + SPI_RX_DST_REG); > + writel((__force u32)cpu_to_le32(xfer->rx_dma), > + mdata->base + SPI_RX_DST_REG); > } > This looks wrong: writel takes a CPU-endian argument, so the value returned from cpu_to_le32() is not appropriate. The warning is correct, and you have to remove the cpu_to_le32() conversion in order to get the driver to behave correctly when the kernel is built as big-endian. Arnd -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
