ACPI / LPSS: allow to use specific PM domain during ->probe()

The LPSS DMA controller would like to use the specific PM domain callbacks
during early stage, namely in ->probe(). This patch moves the specific PM
domain assignment early to be accessible during a whole life time of the device
in the system.

Suggested-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Tested-by: Scott Ashcroft <scott.ashcroft@talk21.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

1 files changed, 4 insertions, 6 deletions

diff --git a/drivers/acpi/acpi_lpss.c b/drivers/acpi/acpi_lpss.c
index f6b71afb80ea..4804ae31b057 100644
--- a/drivers/acpi/acpi_lpss.c
+++ b/drivers/acpi/acpi_lpss.c
@@ -659,19 +659,17 @@ static int acpi_lpss_platform_notify(struct notifier_block *nb,
         }
 
         switch (action) {
-        case BUS_NOTIFY_BOUND_DRIVER:
-                pdev->dev.pm_domain = &acpi_lpss_pm_domain;
-                break;
-        case BUS_NOTIFY_UNBOUND_DRIVER:
-                pdev->dev.pm_domain = NULL;
-                break;
         case BUS_NOTIFY_ADD_DEVICE:
+                pdev->dev.pm_domain = &acpi_lpss_pm_domain;
                 if (pdata->dev_desc->flags & LPSS_LTR)
                         return sysfs_create_group(&pdev->dev.kobj,
                                                   &lpss_attr_group);
+                break;
         case BUS_NOTIFY_DEL_DEVICE:
                 if (pdata->dev_desc->flags & LPSS_LTR)
                         sysfs_remove_group(&pdev->dev.kobj, &lpss_attr_group);
+                pdev->dev.pm_domain = NULL;
+                break;
         default:
                 break;
         }