[PATCH 4.20 029/145] mtd: rawnand: omap2: Pass the parent of pdev to dma_request_chan()

[Greg Kroah-Hartman]

4.20-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Boris Brezillon <boris.brezillon@xxxxxxxxxxx>

commit 9b432630e0150b777c423fdef6a7b8d17dfa70b6 upstream.

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@xxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Boris Brezillon <boris.brezillon@xxxxxxxxxxx>
Tested-by: Alexander Sverdlin <alexander.sverdlin@xxxxxxxxx>
Signed-off-by: Miquel Raynal <miquel.raynal@xxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

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

--- 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
 	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");