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serial: sh-sci: convert not to use dma_request_slave_channel()

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dma_request_slave_channel() is deprecated. dma_request_chan() should
be used directly instead.

Switch to the preferred function and update the error handling accordingly.

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/d6773b9bd88dbbbea06bc6d5cd59aa117b1ee2ee.1700416841.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Christophe JAILLET
2023-11-19 19:00:58 +01:00
committed by Greg Kroah-Hartman
parent b49c36e4b2
commit f1c7f92ee9
1 changed files with 3 additions and 4 deletions
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drivers/tty/serial/sh-sci.c
+3 -4
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@@ -1558,10 +1558,9 @@ static struct dma_chan *sci_request_dma_chan(struct uart_port *port,
struct dma_slave_config cfg;
int ret;
chan = dma_request_slave_channel(port->dev,
dir == DMA_MEM_TO_DEV ? "tx" : "rx");
if (!chan) {
dev_dbg(port->dev, "dma_request_slave_channel failed\n");
chan = dma_request_chan(port->dev, dir == DMA_MEM_TO_DEV ? "tx" : "rx");
if (IS_ERR(chan)) {
dev_dbg(port->dev, "dma_request_chan failed\n");
return NULL;
}