Commit 92d020f9 authored by Vadim Pasternak's avatar Vadim Pasternak Committed by Andy Shevchenko
Browse files

platform/mellanox: mlxreg-hotplug: Add environmental data to uevent 



Send "udev" event with environmental data in order to allow handling
"ENV{}" variables in "udev" rules.

Signed-off-by: default avatarVadim Pasternak <vadimp@mellanox.com>
Signed-off-by: default avatarAndy Shevchenko <andriy.shevchenko@linux.intel.com>
parent 0a43f7be

drivers/platform/mellanox/mlxreg-hotplug.c

+20 −2
Original line number Diff line number Diff line
@@ -16,6 +16,7 @@ 
#include <linux/platform_data/mlxreg.h>

#include <linux/platform_device.h>

#include <linux/spinlock.h>

#include <linux/string_helpers.h>

#include <linux/regmap.h>

#include <linux/workqueue.h>
@@ -71,6 +72,23 @@ struct mlxreg_hotplug_priv_data { 
	u8 not_asserted;

};



/* Environment variables array for udev. */

static char *mlxreg_hotplug_udev_envp[] = { NULL, NULL };



static int

mlxreg_hotplug_udev_event_send(struct kobject *kobj,

			       struct mlxreg_core_data *data, bool action)

{

	char event_str[MLXREG_CORE_LABEL_MAX_SIZE + 2];

	char label[MLXREG_CORE_LABEL_MAX_SIZE] = { 0 };



	mlxreg_hotplug_udev_envp[0] = event_str;

	string_upper(label, data->label);

	snprintf(event_str, MLXREG_CORE_LABEL_MAX_SIZE, "%s=%d", label, !!action);



	return kobject_uevent_env(kobj, KOBJ_CHANGE, mlxreg_hotplug_udev_envp);

}



static int mlxreg_hotplug_device_create(struct mlxreg_hotplug_priv_data *priv,

					struct mlxreg_core_data *data)

{
@@ -78,7 +96,7 @@ static int mlxreg_hotplug_device_create(struct mlxreg_hotplug_priv_data *priv, 
	struct i2c_client *client;



	/* Notify user by sending hwmon uevent. */

	kobject_uevent(&priv->hwmon->kobj, KOBJ_CHANGE);

	mlxreg_hotplug_udev_event_send(&priv->hwmon->kobj, data, true);



	/*

	 * Return if adapter number is negative. It could be in case hotplug
@@ -118,7 +136,7 @@ mlxreg_hotplug_device_destroy(struct mlxreg_hotplug_priv_data *priv, 
			      struct mlxreg_core_data *data)

{

	/* Notify user by sending hwmon uevent. */

	kobject_uevent(&priv->hwmon->kobj, KOBJ_CHANGE);

	mlxreg_hotplug_udev_event_send(&priv->hwmon->kobj, data, false);



	if (data->hpdev.client) {

		i2c_unregister_device(data->hpdev.client);