Messages in this thread | | | From | <> | Subject | Re: [PATCH] mtd: rawnand: atmel: Unmap streaming DMA mappings | Date | Wed, 7 Sep 2022 09:06:39 +0000 |
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On 7/28/22 10:40, Tudor Ambarus wrote: > 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; >
Hi, Richard, Miquel,
Would you please consider to include this patch in your queue? If yes, please add the following tag, it solves a regression:
Link: https://lore.kernel.org/lkml/13c6c9a2-6db5-c3bf-349b-4c127ad3496a@axentia.se/
-- Cheers, ta
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