linux-kernel - [PATCH 1/5] soundwire: sysfs: move sdw_slave_dev_attr

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Message-Id: <20220729135041.2285908-1-gregkh@linuxfoundation.org>
Date:   Fri, 29 Jul 2022 15:50:37 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     alsa-devel@...a-project.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Vinod Koul <vkoul@...nel.org>,
        Bard Liao <yung-chuan.liao@...ux.intel.com>,
        Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>,
        Sanyog Kale <sanyog.r.kale@...el.com>,
        linux-kernel@...r.kernel.org
Subject: [PATCH 1/5] soundwire: sysfs: move sdw_slave_dev_attr_group into the existing list of groups

The sysfs logic already creates a list of groups for the device, so add
the sdw_slave_dev_attr_group group to that list instead of having to do
a two-step process of adding a group list and then an individual group.

This is a step on the way to moving all of the sysfs attribute handling
into the default driver core attribute group logic so that the soundwire
core does not have to do any of it manually.

Cc: Vinod Koul <vkoul@...nel.org>
Cc: Bard Liao <yung-chuan.liao@...ux.intel.com>
Cc: Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
Cc: Sanyog Kale <sanyog.r.kale@...el.com>
Cc: alsa-devel@...a-project.org
Cc: linux-kernel@...r.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/soundwire/sysfs_slave.c | 15 ++++++++++-----
 1 file changed, 10 insertions(+), 5 deletions(-)

diff --git a/drivers/soundwire/sysfs_slave.c b/drivers/soundwire/sysfs_slave.c
index 3210359cd944..83e3f6cc3250 100644
--- a/drivers/soundwire/sysfs_slave.c
+++ b/drivers/soundwire/sysfs_slave.c
@@ -105,7 +105,10 @@ static struct attribute *slave_attrs[] = {
 	&dev_attr_modalias.attr,
 	NULL,
 };
-ATTRIBUTE_GROUPS(slave);
+
+static const struct attribute_group slave_attr_group = {
+	.attrs = slave_attrs,
+};
 
 static struct attribute *slave_dev_attrs[] = {
 	&dev_attr_mipi_revision.attr,
@@ -190,6 +193,12 @@ static const struct attribute_group dp0_group = {
 	.name = "dp0",
 };
 
+static const struct attribute_group *slave_groups[] = {
+	&slave_attr_group,
+	&sdw_slave_dev_attr_group,
+	NULL,
+};
+
 int sdw_slave_sysfs_init(struct sdw_slave *slave)
 {
 	int ret;
@@ -198,10 +207,6 @@ int sdw_slave_sysfs_init(struct sdw_slave *slave)
 	if (ret < 0)
 		return ret;
 
-	ret = devm_device_add_group(&slave->dev, &sdw_slave_dev_attr_group);
-	if (ret < 0)
-		return ret;
-
 	if (slave->prop.dp0_prop) {
 		ret = devm_device_add_group(&slave->dev, &dp0_group);
 		if (ret < 0)
-- 
2.37.1