linux-kernel - [PATCH] ASoC: sh: convert not to use dma_request_slave

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Message-Id: <1a837f96f056fa3dcb02a77afa5892d40b354cb1.1700417934.git.christophe.jaillet@wanadoo.fr>
Date:   Sun, 19 Nov 2023 19:19:14 +0100
From:   Christophe JAILLET <christophe.jaillet@...adoo.fr>
To:     Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>
Cc:     linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>,
        linux-sound@...r.kernel.org
Subject: [PATCH] ASoC: sh: convert not to use dma_request_slave_channel()

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@...adoo.fr>
---
This patch is NOT compile tested. I've not been able to find a correct
setting so that CONFIG_SERIAL_SH_SCI_DMA is set.
---
 sound/soc/sh/fsi.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/sound/soc/sh/fsi.c b/sound/soc/sh/fsi.c
index 2ef47aa2c778..84601ba43b7d 100644
--- a/sound/soc/sh/fsi.c
+++ b/sound/soc/sh/fsi.c
@@ -1379,7 +1379,9 @@ static int fsi_dma_probe(struct fsi_priv *fsi, struct fsi_stream *io, struct dev
 	io->chan = dma_request_channel(mask, shdma_chan_filter,
 				       (void *)io->dma_id);
 #else
-	io->chan = dma_request_slave_channel(dev, is_play ? "tx" : "rx");
+	io->chan = dma_request_chan(dev, is_play ? "tx" : "rx");
+	if (IS_ERR(io->chan))
+		io->chan = NULL;
 #endif
 	if (io->chan) {
 		struct dma_slave_config cfg = {};
-- 
2.34.1