linux-kernel - [PATCH v2 2/3] hwmon: (pmbus): Replace - with

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Date:   Wed, 17 Mar 2021 09:30:35 +1300
From:   Chris Packham <chris.packham@...iedtelesis.co.nz>
To:     robh+dt@...nel.org, jdelvare@...e.com, linux@...ck-us.net
Cc:     devicetree@...r.kernel.org, linux-hwmon@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Chris Packham <chris.packham@...iedtelesis.co.nz>
Subject: [PATCH v2 2/3] hwmon: (pmbus): Replace - with _ in device names before registration

The hwmon sysfs ABI requires that the `name` property doesn't include
any dashes. But when the pmbus code picks the name up from the device
tree it quite often does. Replace '-' with '_' before registering the
device.

Signed-off-by: Chris Packham <chris.packham@...iedtelesis.co.nz>
---

Notes:
    Changes in v2:
    - New

 drivers/hwmon/pmbus/pmbus_core.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/hwmon/pmbus/pmbus_core.c b/drivers/hwmon/pmbus/pmbus_core.c
index aadea85fe630..7d2f8f032314 100644
--- a/drivers/hwmon/pmbus/pmbus_core.c
+++ b/drivers/hwmon/pmbus/pmbus_core.c
@@ -2557,6 +2557,7 @@ int pmbus_do_probe(struct i2c_client *client, struct pmbus_driver_info *info)
 	struct pmbus_data *data;
 	size_t groups_num = 0;
 	int ret;
+	char *name;
 
 	if (!info)
 		return -ENODEV;
@@ -2606,10 +2607,15 @@ int pmbus_do_probe(struct i2c_client *client, struct pmbus_driver_info *info)
 		return -ENODEV;
 	}
 
+	name = devm_kstrdup(dev, client->name, GFP_KERNEL);
+	if (!name)
+		return -ENOMEM;
+	strreplace(name, '-', '_');
+
 	data->groups[0] = &data->group;
 	memcpy(data->groups + 1, info->groups, sizeof(void *) * groups_num);
 	data->hwmon_dev = devm_hwmon_device_register_with_groups(dev,
-					client->name, data, data->groups);
+					name, data, data->groups);
 	if (IS_ERR(data->hwmon_dev)) {
 		dev_err(dev, "Failed to register hwmon device\n");
 		return PTR_ERR(data->hwmon_dev);
-- 
2.30.2