[PATCH] usb_wwan: fix build error in play_delayed.

[Tao Ma <tm@tao.ma>]

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From: Tao Ma <boyu.mt@taobao.com>

There is a build error in today's linus tree.
drivers/usb/serial/usb_wwan.c: In function ‘play_delayed’:
drivers/usb/serial/usb_wwan.c:702: error: ‘struct dev_pm_info’ has no member named ‘usage_count’
The reason is that usage_count is wrapped with macro CONFIG_PM_RUNTIME
now in dev_pm_info.

So use the corresponding pm_runtime_get_noresume instead.

Cc: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Tao Ma <boyu.mt@taobao.com>
---
 drivers/usb/serial/usb_wwan.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/usb/serial/usb_wwan.c b/drivers/usb/serial/usb_wwan.c
index a65ddd5..5858ce4 100644
--- a/drivers/usb/serial/usb_wwan.c
+++ b/drivers/usb/serial/usb_wwan.c
@@ -699,7 +699,7 @@ static void play_delayed(struct usb_serial_port *port)
 			do {
 				unbusy_queued_urb(urb, portdata);
 				//extremely dirty
-				atomic_dec(&port->serial->interface->dev.power.usage_count);
+				pm_runtime_get_noresume(&port->serial->interface->dev);
 			} while ((urb = usb_get_from_anchor(&portdata->delayed)));
 			break;
 		}
-- 
1.6.3.GIT