usb: chipidea: add runtime power management support

Add runtime power management support.

Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/usb/chipidea/otg.c b/drivers/usb/chipidea/otg.c
index a048b08b9d4d..ad6c87a4653c 100644
--- a/drivers/usb/chipidea/otg.c
+++ b/drivers/usb/chipidea/otg.c
@@ -96,6 +96,7 @@ static void ci_otg_work(struct work_struct *work)
                 return;
         }
 
+        pm_runtime_get_sync(ci->dev);
         if (ci->id_event) {
                 ci->id_event = false;
                 ci_handle_id_switch(ci);
@@ -104,6 +105,7 @@ static void ci_otg_work(struct work_struct *work)
                 ci_handle_vbus_change(ci);
         } else
                 dev_err(ci->dev, "unexpected event occurs at %s\n", __func__);
+        pm_runtime_put_sync(ci->dev);
 
         enable_irq(ci->irq);
 }