FAILED: patch "[PATCH] mtd: rawnand: atmel: Unmap streaming DMA mappings" failed to apply to 4.14-stable tree

The patch below does not apply to the 4.14-stable tree.
If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <[email protected]>.

Possible dependencies:

1161703c9bd6 ("mtd: rawnand: atmel: Unmap streaming DMA mappings")

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From 1161703c9bd664da5e3b2eb1a3bb40c210e026ea Mon Sep 17 00:00:00 2001
From: Tudor Ambarus <[email protected]>
Date: Thu, 28 Jul 2022 10:40:14 +0300
Subject: [PATCH] mtd: rawnand: atmel: Unmap streaming DMA mappings

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.

index c9ac3baf68c0..41c6bd6e2d72 100644
@@ -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;