From: Thomas Fourier <fourier.thomas@gmail.com>
Cc: "Thomas Fourier" <fourier.thomas@gmail.com>,
stable@vger.kernel.org,
"Miquel Raynal" <miquel.raynal@bootlin.com>,
"Richard Weinberger" <richard@nod.at>,
"Vignesh Raghavendra" <vigneshr@ti.com>,
"Uwe Kleine-König" <u.kleine-koenig@baylibre.com>,
"Vipin Kumar" <vipin.kumar@st.com>,
"Artem Bityutskiy" <artem.bityutskiy@linux.intel.com>,
"Viresh Kumar" <vireshk@kernel.org>,
"David Woodhouse" <David.Woodhouse@intel.com>,
linux-mtd@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: [PATCH v2] mtd: rawnand: atmel: Add missing check after DMA map
Date: Wed, 2 Jul 2025 08:58:02 +0200 [thread overview]
Message-ID: <20250702065806.20983-2-fourier.thomas@gmail.com> (raw)
The DMA map functions can fail and should be tested for errors.
Fixes: 4774fb0a48aa ("mtd: nand/fsmc: Add DMA support")
Signed-off-by: Thomas Fourier <fourier.thomas@gmail.com>
---
v1 -> v2:
- Add stable@vger.kernel.org
- Fix subject prefix
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 d579d5dd60d6..df61db8ce466 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;
--
2.43.0
next reply other threads:[~2025-07-02 6:59 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-07-02 6:58 Thomas Fourier [this message]
2025-07-02 7:00 ` [PATCH v2] mtd: rawnand: atmel: Add missing check after DMA map kernel test robot
2025-07-02 10:48 ` Balamanikandan.Gunasundar
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