diff options
| -rw-r--r-- | drivers/mmc/host/renesas_sdhi_internal_dmac.c | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/drivers/mmc/host/renesas_sdhi_internal_dmac.c b/drivers/mmc/host/renesas_sdhi_internal_dmac.c index 6a86619d3f85..b36e174a4b0c 100644 --- a/drivers/mmc/host/renesas_sdhi_internal_dmac.c +++ b/drivers/mmc/host/renesas_sdhi_internal_dmac.c @@ -157,14 +157,20 @@ renesas_sdhi_internal_dmac_start_dma(struct tmio_mmc_host *host, { struct scatterlist *sg = host->sg_ptr; u32 dtran_mode = DTRAN_MODE_BUS_WID_TH | DTRAN_MODE_ADDR_MODE; - int ret; /* This DMAC cannot handle if sg_len is not 1 */ WARN_ON(host->sg_len > 1); + if (!dma_map_sg(&host->pdev->dev, sg, host->sg_len, + mmc_get_dma_dir(data))) + goto force_pio; + /* This DMAC cannot handle if buffer is not 8-bytes alignment */ - if (!IS_ALIGNED(sg->offset, 8)) + if (!IS_ALIGNED(sg_dma_address(sg), 8)) { + dma_unmap_sg(&host->pdev->dev, sg, host->sg_len, + mmc_get_dma_dir(data)); goto force_pio; + } if (data->flags & MMC_DATA_READ) { dtran_mode |= DTRAN_MODE_CH_NUM_CH1; @@ -175,11 +181,6 @@ renesas_sdhi_internal_dmac_start_dma(struct tmio_mmc_host *host, dtran_mode |= DTRAN_MODE_CH_NUM_CH0; } - ret = dma_map_sg(&host->pdev->dev, sg, host->sg_len, - mmc_get_dma_dir(data)); - if (ret == 0) - goto force_pio; - renesas_sdhi_internal_dmac_enable_dma(host, true); /* set dma parameters */ |