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mtd: nand: realtek-ecc: Fix a IS_ERR() vs NULL bug in probe

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The dma_alloc_noncoherent() function doesn't return error pointers, it
returns NULL on error.  Fix the error checking to match.

Fixes: 3148d0e5b1 ("mtd: nand: realtek-ecc: Add Realtek external ECC engine support")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
This commit is contained in:
Dan Carpenter 2025-10-03 12:30:10 +03:00 committed by Miquel Raynal
parent e4185bed73
commit 9225f02ff2
1 changed files with 2 additions and 2 deletions
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4
drivers/mtd/nand/ecc-realtek.c
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@ -418,8 +418,8 @@ static int rtl_ecc_probe(struct platform_device *pdev)
rtlc->buf = dma_alloc_noncoherent(dev, RTL_ECC_DMA_SIZE, &rtlc->buf_dma,
DMA_BIDIRECTIONAL, GFP_KERNEL);
if (IS_ERR(rtlc->buf))
return PTR_ERR(rtlc->buf);
if (!rtlc->buf)
return -ENOMEM;
rtlc->dev = dev;
rtlc->engine.dev = dev;