[PATCH linux dev-4.10 1/2] hwmon: (pmbus): Export pmbus device debugfs directory entry

[Matt Spinler]

Reviewed-by: Matt Spinler mspinler at linux.vnet.ibm.com


On 11/2/2017 3:59 PM, Eddie James wrote:
> From: "Edward A. James" <eajames at us.ibm.com>
>
> Pmbus client drivers, if they want to use debugfs, should use the same
> root directory as the pmbus debugfs entries are using. Therefore, export
> the device dentry for the pmbus client.
>
> Signed-off-by: Edward A. James <eajames at us.ibm.com>
> ---
>   drivers/hwmon/pmbus/pmbus.h      | 1 +
>   drivers/hwmon/pmbus/pmbus_core.c | 7 +++++++
>   2 files changed, 8 insertions(+)
>
> diff --git a/drivers/hwmon/pmbus/pmbus.h b/drivers/hwmon/pmbus/pmbus.h
> index fd422cd..153d3f6 100644
> --- a/drivers/hwmon/pmbus/pmbus.h
> +++ b/drivers/hwmon/pmbus/pmbus.h
> @@ -452,5 +452,6 @@ int pmbus_do_probe(struct i2c_client *client, const struct i2c_device_id *id,
>   int pmbus_do_remove(struct i2c_client *client);
>   const struct pmbus_driver_info *pmbus_get_driver_info(struct i2c_client
>   						      *client);
> +struct dentry *pmbus_get_debugfs_dir(struct i2c_client *client);
>
>   #endif /* PMBUS_H */
> diff --git a/drivers/hwmon/pmbus/pmbus_core.c b/drivers/hwmon/pmbus/pmbus_core.c
> index c4b551b..b943f99 100644
> --- a/drivers/hwmon/pmbus/pmbus_core.c
> +++ b/drivers/hwmon/pmbus/pmbus_core.c
> @@ -2371,6 +2371,13 @@ int pmbus_do_remove(struct i2c_client *client)
>   }
>   EXPORT_SYMBOL_GPL(pmbus_do_remove);
>
> +struct dentry *pmbus_get_debugfs_dir(struct i2c_client *client)
> +{
> +	struct pmbus_data *data = i2c_get_clientdata(client);
> +
> +	return data->debugfs;
> +}
> +
>   static int __init pmbus_core_init(void)
>   {
>   	pmbus_debugfs_dir = debugfs_create_dir("pmbus", NULL);

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