langwell_otg: enable runtime pm at probe time

decrement the usage count at probe time and enable runtime pm.
At remove time, prevent runtime pm by incrementing usage count
and forbidding runtime pm.

Signed-off-by: Kristen Carlson Accardi <kristen@linux.intel.com>
Signed-off-by: Dirk Brandewie <dirk.brandewie@gmail.com>

diff --git a/drivers/usb/otg/langwell_otg.c b/drivers/usb/otg/langwell_otg.c
index f08f784..5937dbc 100644 (file)
--- a/drivers/usb/otg/langwell_otg.c
+++ b/drivers/usb/otg/langwell_otg.c
@@ -2110,6 +2110,9 @@ static int langwell_otg_probe(struct pci_dev *pdev,
        if (lnw->iotg.otg.state == OTG_STATE_A_IDLE)
                langwell_update_transceiver();
 
+       pm_runtime_put_noidle(&pdev->dev);
+       pm_runtime_allow(&pdev->dev);
+
        return 0;
 
 err:
@@ -2123,6 +2126,9 @@ static void langwell_otg_remove(struct pci_dev *pdev)
 {
        struct langwell_otg *lnw = the_transceiver;
 
+       pm_runtime_get_noresume(&pdev->dev);
+       pm_runtime_forbid(&pdev->dev);
+
        if (lnw->qwork) {
                flush_workqueue(lnw->qwork);
                destroy_workqueue(lnw->qwork);