linux-kernel - [PATCH 1/3] i2c: stm32: fix the device used for the DMA map

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Message-ID: <20250616-i2c-upstream-v1-1-42d3d5374e65@foss.st.com>
Date: Mon, 16 Jun 2025 10:53:54 +0200
From: Clément Le Goffic <clement.legoffic@...s.st.com>
To: Pierre-Yves MORDRET <pierre-yves.mordret@...s.st.com>,
        Alain Volmat
	<alain.volmat@...s.st.com>,
        Andi Shyti <andi.shyti@...nel.org>,
        "Maxime
 Coquelin" <mcoquelin.stm32@...il.com>,
        Alexandre Torgue
	<alexandre.torgue@...s.st.com>,
        Sumit Semwal <sumit.semwal@...aro.org>,
        Christian König <christian.koenig@....com>,
        "M'boumba Cedric
 Madianga" <cedric.madianga@...il.com>,
        Wolfram Sang <wsa@...nel.org>
CC: Pierre-Yves MORDRET <pierre-yves.mordret@...com>,
        <linux-i2c@...r.kernel.org>,
        <linux-stm32@...md-mailman.stormreply.com>,
        <linux-arm-kernel@...ts.infradead.org>, <linux-kernel@...r.kernel.org>,
        <linux-media@...r.kernel.org>, <dri-devel@...ts.freedesktop.org>,
        <linaro-mm-sig@...ts.linaro.org>,
        Clément Le Goffic
	<clement.legoffic@...s.st.com>
Subject: [PATCH 1/3] i2c: stm32: fix the device used for the DMA map

If the DMA mapping failed, it produced an error log with the wrong
device name:
"stm32-dma3 40400000.dma-controller: rejecting DMA map of vmalloc memory"
Fix this issue by replacing the dev with the I2C dev.

Fixes: bb8822cbbc53 ("i2c: i2c-stm32: Add generic DMA API")
Signed-off-by: Clément Le Goffic <clement.legoffic@...s.st.com>
---
 drivers/i2c/busses/i2c-stm32.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/i2c/busses/i2c-stm32.c b/drivers/i2c/busses/i2c-stm32.c
index 157c64e27d0b..5e0b31aed774 100644
--- a/drivers/i2c/busses/i2c-stm32.c
+++ b/drivers/i2c/busses/i2c-stm32.c
@@ -118,7 +118,7 @@ int stm32_i2c_prep_dma_xfer(struct device *dev, struct stm32_i2c_dma *dma,
 	dma->dma_len = len;
 	chan_dev = dma->chan_using->device->dev;
 
-	dma->dma_buf = dma_map_single(chan_dev, buf, dma->dma_len,
+	dma->dma_buf = dma_map_single(dev, buf, dma->dma_len,
 				      dma->dma_data_dir);
 	if (dma_mapping_error(chan_dev, dma->dma_buf)) {
 		dev_err(dev, "DMA mapping failed\n");

-- 
2.43.0