ACPI: run ACPI device hot removal in kacpi_hotplug_wq
Now that new interface is available,
convert to using it rather than creating a new kernel thread.
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index 8ff510b..9c6e42e 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -95,7 +95,7 @@
}
static DEVICE_ATTR(modalias, 0444, acpi_device_modalias_show, NULL);
-static int acpi_bus_hot_remove_device(void *context)
+static void acpi_bus_hot_remove_device(void *context)
{
struct acpi_device *device;
acpi_handle handle = context;
@@ -104,10 +104,10 @@
acpi_status status = AE_OK;
if (acpi_bus_get_device(handle, &device))
- return 0;
+ return;
if (!device)
- return 0;
+ return;
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Hot-removing device %s...\n", dev_name(&device->dev)));
@@ -115,7 +115,7 @@
if (acpi_bus_trim(device, 1)) {
printk(KERN_ERR PREFIX
"Removing device failed\n");
- return -1;
+ return;
}
/* power off device */
@@ -142,9 +142,10 @@
*/
status = acpi_evaluate_object(handle, "_EJ0", &arg_list, NULL);
if (ACPI_FAILURE(status))
- return -ENODEV;
+ printk(KERN_WARNING PREFIX
+ "Eject device failed\n");
- return 0;
+ return;
}
static ssize_t
@@ -155,7 +156,6 @@
acpi_status status;
acpi_object_type type = 0;
struct acpi_device *acpi_device = to_acpi_device(d);
- struct task_struct *task;
if ((!count) || (buf[0] != '1')) {
return -EINVAL;
@@ -172,11 +172,7 @@
goto err;
}
- /* remove the device in another thread to fix the deadlock issue */
- task = kthread_run(acpi_bus_hot_remove_device,
- acpi_device->handle, "acpi_hot_remove_device");
- if (IS_ERR(task))
- ret = PTR_ERR(task);
+ acpi_os_hotplug_execute(acpi_bus_hot_remove_device, acpi_device->handle);
err:
return ret;
}