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2024-02-20 ea08eeccae9297f7aabd2ef7f0c2517ac4549acc

 kernel/arch/powerpc/platforms/512x/mpc512x_lpbfifo.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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  * The driver for Freescale MPC512x LocalPlus Bus FIFO
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  * (called SCLPC in the Reference Manual).
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  *
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  * Copyright (C) 2013-2015 Alexander Popov <alex.popov@linux.com>.
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- *
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- * This file is released under the GPLv2.
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  */
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 #include <linux/interrupt.h>
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@@ -435,9 +434,9 @@
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 	memset(&lpbfifo, 0, sizeof(struct lpbfifo_data));
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 	spin_lock_init(&lpbfifo.lock);
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-	lpbfifo.chan = dma_request_slave_channel(&pdev->dev, "rx-tx");
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-	if (lpbfifo.chan == NULL)
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-		return -EPROBE_DEFER;
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+	lpbfifo.chan = dma_request_chan(&pdev->dev, "rx-tx");
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+	if (IS_ERR(lpbfifo.chan))
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+		return PTR_ERR(lpbfifo.chan);
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 	if (of_address_to_resource(pdev->dev.of_node, 0, &r) != 0) {
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 		dev_err(&pdev->dev, "bad 'reg' in 'sclpc' device tree node\n");