From: Dan Carpenter <dan.carpenter@linaro.org>
Date: Fri, 2 May 2025 08:39:29 +0000 (+0300)
Subject: mtd: rawnand: loongson1: Fix error code in ls1x_nand_dma_transfer()
X-Git-Tag: v6.16-rc1~81^2^2~7
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0d470c72bea4d9f4c24b304fefdc857979cb5ca0;p=thirdparty%2Fkernel%2Flinux.git

mtd: rawnand: loongson1: Fix error code in ls1x_nand_dma_transfer()

The "desc" variable is NULL and PTR_ERR(NULL) is zero/success.  Return
a negative error code instead.

Fixes: d2d10ede04b1 ("mtd: rawnand: Add Loongson-1 NAND Controller Driver")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
---

diff --git a/drivers/mtd/nand/raw/loongson1-nand-controller.c b/drivers/mtd/nand/raw/loongson1-nand-controller.c
index 6a369b1c7d864..8754bb4f8b568 100644
--- a/drivers/mtd/nand/raw/loongson1-nand-controller.c
+++ b/drivers/mtd/nand/raw/loongson1-nand-controller.c
@@ -371,7 +371,7 @@ static int ls1x_nand_dma_transfer(struct ls1x_nand_host *host, struct ls1x_nand_
 	desc = dmaengine_prep_slave_single(chan, dma_addr, op->len, xfer_dir, DMA_PREP_INTERRUPT);
 	if (!desc) {
 		dev_err(dev, "failed to prepare DMA descriptor\n");
-		ret = PTR_ERR(desc);
+		ret = -ENOMEM;
 		goto err;
 	}
 	desc->callback = ls1x_nand_dma_callback;