修改led为gpio

hc

2024-10-12 a5969cabbb4660eab42b6ef0412cbbd1200cf14d

 kernel/drivers/i2c/busses/i2c-stm32.c
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@@ -1,10 +1,9 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * i2c-stm32.c
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  *
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  * Copyright (C) M'boumba Cedric Madianga 2017
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  * Author: M'boumba Cedric Madianga <cedric.madianga@gmail.com>
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- *
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- * License terms:  GNU General Public License (GPL), version 2
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  */
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 #include "i2c-stm32.h"
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@@ -26,8 +25,10 @@
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 	/* Request and configure I2C TX dma channel */
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 	dma->chan_tx = dma_request_chan(dev, "tx");
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 	if (IS_ERR(dma->chan_tx)) {
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-		dev_dbg(dev, "can't request DMA tx channel\n");
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 		ret = PTR_ERR(dma->chan_tx);
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+		if (ret != -ENODEV)
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+			ret = dev_err_probe(dev, ret,
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+					    "can't request DMA tx channel\n");
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 		goto fail_al;
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 	}
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@@ -45,8 +46,11 @@
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 	/* Request and configure I2C RX dma channel */
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 	dma->chan_rx = dma_request_chan(dev, "rx");
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 	if (IS_ERR(dma->chan_rx)) {
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-		dev_err(dev, "can't request DMA rx channel\n");
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 		ret = PTR_ERR(dma->chan_rx);
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+		if (ret != -ENODEV)
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+			ret = dev_err_probe(dev, ret,
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+					    "can't request DMA rx channel\n");
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+
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 		goto fail_tx;
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 	}
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@@ -74,7 +78,6 @@
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 	dma_release_channel(dma->chan_tx);
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 fail_al:
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 	devm_kfree(dev, dma);
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-	dev_info(dev, "can't use DMA\n");
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 	return ERR_PTR(ret);
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 }