Send "udev" event with environmental data in order to allow handling
"ENV{}" variables in "udev" rules.
Signed-off-by: Vadim Pasternak <vadimp@xxxxxxxxxxxx>
---
drivers/platform/mellanox/mlxreg-hotplug.c | 27 +++++++++++++++++++++++++--
1 file changed, 25 insertions(+), 2 deletions(-)
diff --git a/drivers/platform/mellanox/mlxreg-hotplug.c b/drivers/platform/mellanox/mlxreg-hotplug.c
index 832fcf282d45..5420d5bb0e6c 100644
--- a/drivers/platform/mellanox/mlxreg-hotplug.c
+++ b/drivers/platform/mellanox/mlxreg-hotplug.c
@@ -97,13 +97,36 @@ 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 };
+ int i;
+
+ mlxreg_hotplug_udev_envp[0] = event_str;
+ for (i = 0; data->label[i]; i++)
+ label[i] = toupper(data->label[i]);
+
+ if (action)
+ snprintf(event_str, MLXREG_CORE_LABEL_MAX_SIZE, "%s=1", label);
+ else
+ snprintf(event_str, MLXREG_CORE_LABEL_MAX_SIZE, "%s=0", label);
+
+ 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)
{
struct mlxreg_core_hotplug_platform_data *pdata;
/* 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
@@ -141,7 +164,7 @@ 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);
--
2.11.0
