diff options
| author | Thomas Fourier <fourier.thomas@gmail.com> | 2025-07-07 09:39:37 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-08-28 16:28:36 +0200 |
| commit | fcb12d1e4163723e6c9cc6d96778f8fada7e1a25 (patch) | |
| tree | a64f60155b79115ac785c3d21109dae648629293 /drivers/mtd | |
| parent | 9de4819feef92e12e82d43cc1dad374ea848b19f (diff) | |
| download | linux-fcb12d1e4163723e6c9cc6d96778f8fada7e1a25.tar.gz linux-fcb12d1e4163723e6c9cc6d96778f8fada7e1a25.tar.bz2 linux-fcb12d1e4163723e6c9cc6d96778f8fada7e1a25.zip | |
mtd: rawnand: fsmc: Add missing check after DMA map
commit 6c4dab38431fee3d39a841d66ba6f2890b31b005 upstream.
The DMA map functions can fail and should be tested for errors.
Fixes: 4774fb0a48aa ("mtd: nand/fsmc: Add DMA support")
Cc: stable@vger.kernel.org
Signed-off-by: Thomas Fourier <fourier.thomas@gmail.com>
Rule: add
Link: https://lore.kernel.org/stable/20250702065806.20983-2-fourier.thomas%40gmail.com
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/mtd')
| -rw-r--r-- | drivers/mtd/nand/raw/fsmc_nand.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/mtd/nand/raw/fsmc_nand.c b/drivers/mtd/nand/raw/fsmc_nand.c index 811982da3557..fe5912d31bee 100644 --- a/drivers/mtd/nand/raw/fsmc_nand.c +++ b/drivers/mtd/nand/raw/fsmc_nand.c @@ -503,6 +503,8 @@ static int dma_xfer(struct fsmc_nand_data *host, void *buffer, int len, dma_dev = chan->device; dma_addr = dma_map_single(dma_dev->dev, buffer, len, direction); + if (dma_mapping_error(dma_dev->dev, dma_addr)) + return -EINVAL; if (direction == DMA_TO_DEVICE) { dma_src = dma_addr; |