diff options
| author |   Vadim Pasternak <vadimp@mellanox.com> | 2020-07-14 15:01:57 +0300 |
|---|---|---|
| committer |   Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2020-07-15 12:45:07 +0300 |
| commit | 92d020f97966b1724cfcac93e89176d0eb3aca61 (patch) | |
| tree | 207be943030f401034786221784aaf1e7ddc2dee /drivers/platform/mellanox | |
| parent | platform/mellanox: mlxreg-hotplug: Use capability register for attribute creation (diff) | |
| download | linux-dev-92d020f97966b1724cfcac93e89176d0eb3aca61.tar.xz linux-dev-92d020f97966b1724cfcac93e89176d0eb3aca61.zip | |
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: Vadim Pasternak <vadimp@mellanox.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Diffstat (limited to 'drivers/platform/mellanox')
| -rw-r--r-- | drivers/platform/mellanox/mlxreg-hotplug.c | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/drivers/platform/mellanox/mlxreg-hotplug.c b/drivers/platform/mellanox/mlxreg-hotplug.c index d9863e7fd491..b013445147dd 100644 --- a/drivers/platform/mellanox/mlxreg-hotplug.c +++ b/drivers/platform/mellanox/mlxreg-hotplug.c @@ -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); |