linux-kernel - [PATCH 2/3] ASoC: amd: acp: fix for cpu dai index logic

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Message-ID: <20241007085321.3991149-3-Vijendar.Mukunda@amd.com>
Date: Mon, 7 Oct 2024 14:23:20 +0530
From: Vijendar Mukunda <Vijendar.Mukunda@....com>
To: <broonie@...nel.org>
CC: <alsa-devel@...a-project.org>, <pierre-louis.bossart@...ux.dev>,
	<lgirdwood@...il.com>, <perex@...ex.cz>, <tiwai@...e.com>,
	<dan.carpenter@...aro.org>, <Basavaraj.Hiregoudar@....com>,
	<Sunil-kumar.Dommati@....com>, <venkataprasad.potturu@....com>,
	<linux-sound@...r.kernel.org>, <linux-kernel@...r.kernel.org>, "Vijendar
 Mukunda" <Vijendar.Mukunda@....com>
Subject: [PATCH 2/3] ASoC: amd: acp: fix for cpu dai index logic

Multi link aggregation is not supported for acp6.3 platform.
Below combinations are supported.
- one sdw BE DAI <---> one-cpu DAI <---> one-codec DAI
- one sdw BE DAI  <---> one-cpu DAI <---> multi-codec DAIs
As Single cpu dai is going to be created, In create_sdw_dailink() function
cpu dai index won't be incremented.
Refactor cpu dai index logic to fix below smatch static checker warning.
sound/soc/amd/acp/acp-sdw-sof-mach.c:157 create_sdw_dailink()
warn: iterator 'i' not incremented.

Reported-by: Dan Carpenter <dan.carpenter@...aro.org>
Closes: https://lore.kernel.org/all/a201e871-375e-43eb-960d-5c048956c2ff@amd.com/T/
Fixes: 6d8348ddc56e ("ASoC: amd: acp: refactor SoundWire machine driver code")
Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@....com>
---
 sound/soc/amd/acp/acp-sdw-sof-mach.c | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/sound/soc/amd/acp/acp-sdw-sof-mach.c b/sound/soc/amd/acp/acp-sdw-sof-mach.c
index acab2675d1f5..3be401c72270 100644
--- a/sound/soc/amd/acp/acp-sdw-sof-mach.c
+++ b/sound/soc/amd/acp/acp-sdw-sof-mach.c
@@ -154,7 +154,7 @@ static int create_sdw_dailink(struct snd_soc_card *card,
 		int num_cpus = hweight32(sof_dai->link_mask[stream]);
 		int num_codecs = sof_dai->num_devs[stream];
 		int playback, capture;
-		int i = 0, j = 0;
+		int j = 0;
 		char *name;
 
 		if (!sof_dai->num_devs[stream])
@@ -213,14 +213,14 @@ static int create_sdw_dailink(struct snd_soc_card *card,
 
 			int link_num = ffs(sof_end->link_mask) - 1;
 
-			cpus[i].dai_name = devm_kasprintf(dev, GFP_KERNEL,
-							  "SDW%d Pin%d",
-							  link_num, cpu_pin_id);
-			dev_dbg(dev, "cpu[%d].dai_name:%s\n", i, cpus[i].dai_name);
-			if (!cpus[i].dai_name)
+			cpus->dai_name = devm_kasprintf(dev, GFP_KERNEL,
+							"SDW%d Pin%d",
+							link_num, cpu_pin_id);
+			dev_dbg(dev, "cpu->dai_name:%s\n", cpus->dai_name);
+			if (!cpus->dai_name)
 				return -ENOMEM;
 
-			codec_maps[j].cpu = i;
+			codec_maps[j].cpu = 0;
 			codec_maps[j].codec = j;
 
 			codecs[j].name = sof_end->codec_name;
-- 
2.34.1