linux-kernel - [PATCH AUTOSEL 5.15 28/42] ASoC: ti: omap-mcbsp: duplicate sysfs error

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Message-Id: <20220720011350.1024134-28-sashal@kernel.org>
Date:   Tue, 19 Jul 2022 21:13:36 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     David Owens <daowens01@...il.com>,
        David Owens <dowens@...cisionplanting.com>,
        Mark Brown <broonie@...nel.org>,
        Sasha Levin <sashal@...nel.org>, peter.ujfalusi@...il.com,
        jarkko.nikula@...mer.com, lgirdwood@...il.com, perex@...ex.cz,
        tiwai@...e.com, alsa-devel@...a-project.org,
        linux-omap@...r.kernel.org
Subject: [PATCH AUTOSEL 5.15 28/42] ASoC: ti: omap-mcbsp: duplicate sysfs error

From: David Owens <daowens01@...il.com>

[ Upstream commit f0d96937d31c4615a6418e4bed5cee50a952040e ]

Convert to managed versions of sysfs and clk allocation to simplify
unbinding and error handling in probe.  Managed sysfs node
creation specifically addresses the following error seen the second time
probe is attempted after sdma_pcm_platform_register() previously requsted
probe deferral:

sysfs: cannot create duplicate filename '/devices/platform/68000000.ocp/49022000.mcbsp/max_tx_thres'

Signed-off-by: David Owens <dowens@...cisionplanting.com>
Link: https://lore.kernel.org/r/20220620183744.3176557-1-dowens@precisionplanting.com
Signed-off-by: Mark Brown <broonie@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 sound/soc/ti/omap-mcbsp-priv.h |  2 --
 sound/soc/ti/omap-mcbsp-st.c   | 14 ++------------
 sound/soc/ti/omap-mcbsp.c      | 19 ++-----------------
 3 files changed, 4 insertions(+), 31 deletions(-)

diff --git a/sound/soc/ti/omap-mcbsp-priv.h b/sound/soc/ti/omap-mcbsp-priv.h
index 7865cda4bf0a..da519ea1f303 100644
--- a/sound/soc/ti/omap-mcbsp-priv.h
+++ b/sound/soc/ti/omap-mcbsp-priv.h
@@ -316,8 +316,6 @@ static inline int omap_mcbsp_read(struct omap_mcbsp *mcbsp, u16 reg,
 
 /* Sidetone specific API */
 int omap_mcbsp_st_init(struct platform_device *pdev);
-void omap_mcbsp_st_cleanup(struct platform_device *pdev);
-
 int omap_mcbsp_st_start(struct omap_mcbsp *mcbsp);
 int omap_mcbsp_st_stop(struct omap_mcbsp *mcbsp);
 
diff --git a/sound/soc/ti/omap-mcbsp-st.c b/sound/soc/ti/omap-mcbsp-st.c
index 0bc7d26c660a..7e8179cae92e 100644
--- a/sound/soc/ti/omap-mcbsp-st.c
+++ b/sound/soc/ti/omap-mcbsp-st.c
@@ -347,7 +347,7 @@ int omap_mcbsp_st_init(struct platform_device *pdev)
 	if (!st_data)
 		return -ENOMEM;
 
-	st_data->mcbsp_iclk = clk_get(mcbsp->dev, "ick");
+	st_data->mcbsp_iclk = devm_clk_get(mcbsp->dev, "ick");
 	if (IS_ERR(st_data->mcbsp_iclk)) {
 		dev_warn(mcbsp->dev,
 			 "Failed to get ick, sidetone might be broken\n");
@@ -359,7 +359,7 @@ int omap_mcbsp_st_init(struct platform_device *pdev)
 	if (!st_data->io_base_st)
 		return -ENOMEM;
 
-	ret = sysfs_create_group(&mcbsp->dev->kobj, &sidetone_attr_group);
+	ret = devm_device_add_group(mcbsp->dev, &sidetone_attr_group);
 	if (ret)
 		return ret;
 
@@ -368,16 +368,6 @@ int omap_mcbsp_st_init(struct platform_device *pdev)
 	return 0;
 }
 
-void omap_mcbsp_st_cleanup(struct platform_device *pdev)
-{
-	struct omap_mcbsp *mcbsp = platform_get_drvdata(pdev);
-
-	if (mcbsp->st_data) {
-		sysfs_remove_group(&mcbsp->dev->kobj, &sidetone_attr_group);
-		clk_put(mcbsp->st_data->mcbsp_iclk);
-	}
-}
-
 static int omap_mcbsp_st_info_volsw(struct snd_kcontrol *kcontrol,
 				    struct snd_ctl_elem_info *uinfo)
 {
diff --git a/sound/soc/ti/omap-mcbsp.c b/sound/soc/ti/omap-mcbsp.c
index 4479d74f0a45..9933b33c80ca 100644
--- a/sound/soc/ti/omap-mcbsp.c
+++ b/sound/soc/ti/omap-mcbsp.c
@@ -702,8 +702,7 @@ static int omap_mcbsp_init(struct platform_device *pdev)
 		mcbsp->max_tx_thres = max_thres(mcbsp) - 0x10;
 		mcbsp->max_rx_thres = max_thres(mcbsp) - 0x10;
 
-		ret = sysfs_create_group(&mcbsp->dev->kobj,
-					 &additional_attr_group);
+		ret = devm_device_add_group(mcbsp->dev, &additional_attr_group);
 		if (ret) {
 			dev_err(mcbsp->dev,
 				"Unable to create additional controls\n");
@@ -711,16 +710,7 @@ static int omap_mcbsp_init(struct platform_device *pdev)
 		}
 	}
 
-	ret = omap_mcbsp_st_init(pdev);
-	if (ret)
-		goto err_st;
-
-	return 0;
-
-err_st:
-	if (mcbsp->pdata->buffer_size)
-		sysfs_remove_group(&mcbsp->dev->kobj, &additional_attr_group);
-	return ret;
+	return omap_mcbsp_st_init(pdev);
 }
 
 /*
@@ -1431,11 +1421,6 @@ static int asoc_mcbsp_remove(struct platform_device *pdev)
 	if (cpu_latency_qos_request_active(&mcbsp->pm_qos_req))
 		cpu_latency_qos_remove_request(&mcbsp->pm_qos_req);
 
-	if (mcbsp->pdata->buffer_size)
-		sysfs_remove_group(&mcbsp->dev->kobj, &additional_attr_group);
-
-	omap_mcbsp_st_cleanup(pdev);
-
 	return 0;
 }
 
-- 
2.35.1