This patch fixes at_xdmac_prep_dma_memcpy(). Indeed the data width field of the Channel Configuration register was not updated properly in the loop: the bits of the dwidth field were not cleared before adding their new value. Signed-off-by: Cyrille Pitchen <cyrille.pitchen@xxxxxxxxx> --- drivers/dma/at_xdmac.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/dma/at_xdmac.c b/drivers/dma/at_xdmac.c index 90040e99f5f3..39f59666f93f 100644 --- a/drivers/dma/at_xdmac.c +++ b/drivers/dma/at_xdmac.c @@ -1096,6 +1096,7 @@ at_xdmac_prep_dma_memcpy(struct dma_chan *chan, dma_addr_t dest, dma_addr_t src, /* Check remaining length and change data width if needed. */ dwidth = at_xdmac_align_width(chan, src_addr | dst_addr | xfer_size); + chan_cc &= ~AT_XDMAC_CC_DWIDTH_MASK; chan_cc |= AT_XDMAC_CC_DWIDTH(dwidth); ublen = xfer_size >> dwidth; -- 1.8.2.2 -- To unsubscribe from this list: send the line "unsubscribe dmaengine" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
