[BUG] usb_wwan: build error

[Eric Dumazet]

commit 16871dcac74c (usb_wwan: error case of resume) added a build error
if CONFIG_PM_RUNTIME is not defined.

  CC [M]  drivers/usb/serial/usb_wwan.o
drivers/usb/serial/usb_wwan.c: In function âplay_delayedâ:
drivers/usb/serial/usb_wwan.c:702: error: âstruct dev_pm_infoâ has no
member named âusage_countâ

I suspect we should use pm_runtime_put_noidle() instead

Signed-off-by: Eric Dumazet <eric.dumazet@xxxxxxxxx>
---
 drivers/usb/serial/usb_wwan.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/usb/serial/usb_wwan.c b/drivers/usb/serial/usb_wwan.c
index a65ddd5..916405c 100644
--- a/drivers/usb/serial/usb_wwan.c
+++ b/drivers/usb/serial/usb_wwan.c
@@ -698,8 +698,7 @@ static void play_delayed(struct usb_serial_port *port)
 			/* we have to throw away the rest */
 			do {
 				unbusy_queued_urb(urb, portdata);
-				//extremely dirty
-				atomic_dec(&port->serial->interface->dev.power.usage_count);
+				pm_runtime_put_noidle(&port->serial->interface->dev);
 			} while ((urb = usb_get_from_anchor(&portdata->delayed)));
 			break;
 		}


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