From: Dan Carpenter dan.carpenter@oracle.com
[ Upstream commit e7a97528e3c787802d8c643d6ab2f428511bb047 ]
If dma_request_channel() fails then the probe fails and it should return a negative error code, but currently it returns success.
fixes: 4774fb0a48aa ("mtd: nand/fsmc: Add DMA support") Signed-off-by: Dan Carpenter dan.carpenter@oracle.com Signed-off-by: Miquel Raynal miquel.raynal@bootlin.com Link: https://lore.kernel.org/linux-mtd/YCqaOZ83OvPOzLwh@mwanda Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/mtd/nand/raw/fsmc_nand.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/mtd/nand/raw/fsmc_nand.c b/drivers/mtd/nand/raw/fsmc_nand.c index 25d354e9448e..a31bb1da44ec 100644 --- a/drivers/mtd/nand/raw/fsmc_nand.c +++ b/drivers/mtd/nand/raw/fsmc_nand.c @@ -1099,11 +1099,13 @@ static int __init fsmc_nand_probe(struct platform_device *pdev) host->read_dma_chan = dma_request_channel(mask, filter, NULL); if (!host->read_dma_chan) { dev_err(&pdev->dev, "Unable to get read dma channel\n"); + ret = -ENODEV; goto disable_clk; } host->write_dma_chan = dma_request_channel(mask, filter, NULL); if (!host->write_dma_chan) { dev_err(&pdev->dev, "Unable to get write dma channel\n"); + ret = -ENODEV; goto release_dma_read_chan; } }