Oops, sorry, wrong prefix. I'll send a v2.

On Thu, 13 Dec 2018 20:19:44 +0100 Boris Brezillon boris.brezillon@bootlin.com wrote:

Commit e1e6255c311b ("mtd: rawnand: omap2: convert driver to nand_scan()") moved part of the init code in the ->attach_chip hook and at the same time changed the struct device object passed to dma_request_chan() (&pdev->dev instead of pdev->dev.parent).

Fixes: e1e6255c311b ("mtd: rawnand: omap2: convert driver to nand_scan()") Reported-by: Alexander Sverdlin alexander.sverdlin@gmail.com Cc: stable@vger.kernel.org Signed-off-by: Boris Brezillon boris.brezillon@bootlin.com

---

drivers/mtd/nand/raw/omap2.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mtd/nand/raw/omap2.c b/drivers/mtd/nand/raw/omap2.c index 886d05c391ef..68e8b9f7f372 100644 --- a/drivers/mtd/nand/raw/omap2.c +++ b/drivers/mtd/nand/raw/omap2.c @@ -1944,7 +1944,7 @@ static int omap_nand_attach_chip(struct nand_chip *chip) case NAND_OMAP_PREFETCH_DMA: dma_cap_zero(mask); dma_cap_set(DMA_SLAVE, mask);

• info->dma = dma_request_chan(dev, "rxtx");
  

• info->dma = dma_request_chan(dev->parent, "rxtx");
  

if (IS_ERR(info->dma)) { dev_err(dev, "DMA engine request failed\n");