Sometimes memory-to-memory test is failed, that's why we need to choose minimum data portion between source and destination limits together.
Signed-off-by: Andy Shevchenko <[email protected]> --- drivers/dma/dw_dmac.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/drivers/dma/dw_dmac.c b/drivers/dma/dw_dmac.c index 9ca9ca4..c4b0eb3 100644 --- a/drivers/dma/dw_dmac.c +++ b/drivers/dma/dw_dmac.c @@ -716,6 +716,7 @@ dwc_prep_dma_memcpy(struct dma_chan *chan, dma_addr_t dest, dma_addr_t src, size_t offset; unsigned int src_width; unsigned int dst_width; + unsigned int data_width; u32 ctllo; dev_vdbg(chan2dev(chan), @@ -728,11 +729,11 @@ dwc_prep_dma_memcpy(struct dma_chan *chan, dma_addr_t dest, dma_addr_t src, return NULL; } - src_width = min_t(unsigned int, dwc->dw->data_width[dwc_get_sms(dws)], - dwc_fast_fls(src | len)); + data_width = min_t(unsigned int, dwc->dw->data_width[dwc_get_sms(dws)], + dwc->dw->data_width[dwc_get_dms(dws)]); - dst_width = min_t(unsigned int, dwc->dw->data_width[dwc_get_dms(dws)], - dwc_fast_fls(dest | len)); + src_width = dst_width = min_t(unsigned int, data_width, + dwc_fast_fls(src | dest | len)); ctllo = DWC_DEFAULT_CTLLO(chan) | DWC_CTLL_DST_WIDTH(dst_width) -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
