diff options
Diffstat (limited to 'drivers/mtd/nand/raw/lpc32xx_slc.c')
| -rw-r--r-- | drivers/mtd/nand/raw/lpc32xx_slc.c | 26 |
1 files changed, 15 insertions, 11 deletions
diff --git a/drivers/mtd/nand/raw/lpc32xx_slc.c b/drivers/mtd/nand/raw/lpc32xx_slc.c index 1c5fa855b9f2..ade971e4cc3b 100644 --- a/drivers/mtd/nand/raw/lpc32xx_slc.c +++ b/drivers/mtd/nand/raw/lpc32xx_slc.c @@ -721,18 +721,22 @@ static int lpc32xx_nand_dma_setup(struct lpc32xx_nand_host *host) struct mtd_info *mtd = nand_to_mtd(&host->nand_chip); dma_cap_mask_t mask; - if (!host->pdata || !host->pdata->dma_filter) { - dev_err(mtd->dev.parent, "no DMA platform data\n"); - return -ENOENT; - } + host->dma_chan = dma_request_chan(mtd->dev.parent, "rx-tx"); + if (IS_ERR(host->dma_chan)) { + /* fallback to request using platform data */ + if (!host->pdata || !host->pdata->dma_filter) { + dev_err(mtd->dev.parent, "no DMA platform data\n"); + return -ENOENT; + } - dma_cap_zero(mask); - dma_cap_set(DMA_SLAVE, mask); - host->dma_chan = dma_request_channel(mask, host->pdata->dma_filter, - "nand-slc"); - if (!host->dma_chan) { - dev_err(mtd->dev.parent, "Failed to request DMA channel\n"); - return -EBUSY; + dma_cap_zero(mask); + dma_cap_set(DMA_SLAVE, mask); + host->dma_chan = dma_request_channel(mask, host->pdata->dma_filter, "nand-slc"); + + if (!host->dma_chan) { + dev_err(mtd->dev.parent, "Failed to request DMA channel\n"); + return -EBUSY; + } } return 0; |