Every dma_map_single() call should have its dma_unmap_single() counterpart, because the DMA address space is a shared resource and one could render the machine unusable by consuming all DMA addresses.
Cc: stable@vger.kernel.org Fixes: f88fc122cc34 ("mtd: nand: Cleanup/rework the atmel_nand driver") Signed-off-by: Tudor Ambarus tudor.ambarus@microchip.com --- drivers/mtd/nand/raw/atmel/nand-controller.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/mtd/nand/raw/atmel/nand-controller.c b/drivers/mtd/nand/raw/atmel/nand-controller.c index 6ef14442c71a..330d2dafdd2d 100644 --- a/drivers/mtd/nand/raw/atmel/nand-controller.c +++ b/drivers/mtd/nand/raw/atmel/nand-controller.c @@ -405,6 +405,7 @@ static int atmel_nand_dma_transfer(struct atmel_nand_controller *nc,
dma_async_issue_pending(nc->dmac); wait_for_completion(&finished); + dma_unmap_single(nc->dev, buf_dma, len, dir);
return 0;