diff options
| author | Tudor Ambarus <tudor.ambarus@microchip.com> | 2022-07-28 10:40:14 +0300 |
|---|---|---|
| committer | Miquel Raynal <miquel.raynal@bootlin.com> | 2022-09-21 11:38:46 +0300 |
| commit | 1161703c9bd664da5e3b2eb1a3bb40c210e026ea (patch) | |
| tree | f6a2599d990da5f9228380230a4f52c21454873c /drivers/mtd | |
| parent | 3e4ad3212cf22687410b1e8f4e68feec50646113 (diff) | |
| download | linux-1161703c9bd664da5e3b2eb1a3bb40c210e026ea.tar.xz | |
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.
Link: https://lore.kernel.org/lkml/13c6c9a2-6db5-c3bf-349b-4c127ad3496a@axentia.se/
Cc: stable@vger.kernel.org
Fixes: f88fc122cc34 ("mtd: nand: Cleanup/rework the atmel_nand driver")
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Acked-by: Alexander Dahl <ada@thorsis.com>
Reported-by: Peter Rosin <peda@axentia.se>
Tested-by: Alexander Dahl <ada@thorsis.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Tested-by: Peter Rosin <peda@axentia.se>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20220728074014.145406-1-tudor.ambarus@microchip.com
Diffstat (limited to 'drivers/mtd')
| -rw-r--r-- | drivers/mtd/nand/raw/atmel/nand-controller.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/mtd/nand/raw/atmel/nand-controller.c b/drivers/mtd/nand/raw/atmel/nand-controller.c index c9ac3baf68c0..41c6bd6e2d72 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; |