Hi, On Tue, Aug 11, 2015 at 12:43 PM, Leilk Liu <leilk.liu@xxxxxxxxxxxx> wrote: > This patch fixes endian warnings detected by sparse: > - sparse: incorrect type in argument 1 (different base types) > expected unsigned int [unsigned] val > got restricted __le32 [usertype] <noident> > - sparse: incorrect type in argument 1 (different base types) > expected unsigned int [unsigned] val > got restricted __le32 [usertype] <noident> This doesn't "fix" the warning, it only hides the warning and leaves the actual issue unfixed. > > Signed-off-by: Leilk Liu <leilk.liu@xxxxxxxxxxxx> > --- > drivers/spi/spi-mt65xx.c | 6 ++++-- > 1 file changed, 4 insertions(+), 2 deletions(-) > > diff --git a/drivers/spi/spi-mt65xx.c b/drivers/spi/spi-mt65xx.c > index 4676b01..ae645fa 100644 > --- a/drivers/spi/spi-mt65xx.c > +++ b/drivers/spi/spi-mt65xx.c > @@ -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); The issue here is that writel already does a cpu_to_le32 conversion, so the extra cpu_to_le32 calls are actually bogus and need to be removed. Else it will do a double conversion on big endian systems, resulting in the data being written in big endian. Jonas -- 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
