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

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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
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26
drivers/platform/mellanox/mlxreg-hotplug.c
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@ -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;
}