UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

platform/mellanox: mlxreg-hotplug: Add hotplug hwmon uevent notification 

Notify user when hotplug device signal is received in order to allow user
to handle such case, if it wishes to take some action on this matter.

Signed-off-by: Vadim Pasternak <vadimp@mellanox.com>
Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
This commit is contained in:
Vadim Pasternak 2018-07-26 22:40:59 +00:00 committed by Darren Hart (VMware)
parent 66342d1c9c
commit 9272d2d1d3
1 changed files with 17 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

26
drivers/platform/mellanox/mlxreg-hotplug.c
View File

@ -102,6 +102,9 @@ static int mlxreg_hotplug_device_create(struct mlxreg_hotplug_priv_data *priv,
{
struct mlxreg_core_hotplug_platform_data *pdata;
/* Notify user by sending hwmon uevent. */
kobject_uevent(&priv->hwmon->kobj, KOBJ_CHANGE);
/*
* Return if adapter number is negative. It could be in case hotplug
* event is not associated with hotplug device.
@ -133,8 +136,13 @@ static int mlxreg_hotplug_device_create(struct mlxreg_hotplug_priv_data *priv,
return 0;
}
static void mlxreg_hotplug_device_destroy(struct mlxreg_core_data *data)
static void
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);
if (data->hpdev.client) {
i2c_unregister_device(data->hpdev.client);
data->hpdev.client = NULL;
@ -277,14 +285,14 @@ mlxreg_hotplug_work_helper(struct mlxreg_hotplug_priv_data *priv,
data = item->data + bit;
if (regval & BIT(bit)) {
if (item->inversed)
mlxreg_hotplug_device_destroy(data);
mlxreg_hotplug_device_destroy(priv, data);
else
mlxreg_hotplug_device_create(priv, data);
} else {
if (item->inversed)
mlxreg_hotplug_device_create(priv, data);
else
mlxreg_hotplug_device_destroy(data);
mlxreg_hotplug_device_destroy(priv, data);
}
}
@ -351,7 +359,7 @@ mlxreg_hotplug_health_work_helper(struct mlxreg_hotplug_priv_data *priv,
* in steady state. Disconnect associated
* device, if it has been connected.
*/
mlxreg_hotplug_device_destroy(data);
mlxreg_hotplug_device_destroy(priv, data);
data->attached = false;
data->health_cntr = 0;
}
@ -569,7 +577,7 @@ static void mlxreg_hotplug_unset_irq(struct mlxreg_hotplug_priv_data *priv)
/* Remove all the attached devices in group. */
count = item->count;
for (j = 0; j < count; j++, data++)
mlxreg_hotplug_device_destroy(data);
mlxreg_hotplug_device_destroy(priv, data);
}
}
@ -634,10 +642,6 @@ static int mlxreg_hotplug_probe(struct platform_device *pdev)
disable_irq(priv->irq);
spin_lock_init(&priv->lock);
INIT_DELAYED_WORK(&priv->dwork_irq, mlxreg_hotplug_work_handler);
/* Perform initial interrupts setup. */
mlxreg_hotplug_set_irq(priv);
priv->after_probe = true;
dev_set_drvdata(&pdev->dev, priv);
err = mlxreg_hotplug_attr_init(priv);
@ -655,6 +659,10 @@ static int mlxreg_hotplug_probe(struct platform_device *pdev)
return PTR_ERR(priv->hwmon);
}
/* Perform initial interrupts setup. */
mlxreg_hotplug_set_irq(priv);
priv->after_probe = true;
return 0;
}