USB: cdc-acm: remove redundant usb_mark_last_busy

There's no need to call usb_mark_last_busy after having increased the PM counter in write(). The device will be marked busy by USB core when the PM counter is balanced in the completion handler. Signed-off-by: Johan Hovold <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
Baughn · May 27, 2014 · 308fee1 · 308fee1
1 parent 4a8ee50
commit 308fee1
Showing 1 changed file with 0 additions and 1 deletion.
diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c
@@ -690,7 +690,6 @@ static int acm_tty_write(struct tty_struct *tty,
 		spin_unlock_irqrestore(&acm->write_lock, flags);
 		return count;
 	}
-	usb_mark_last_busy(acm->dev);
 
 	stat = acm_start_wb(acm, wb);
 	spin_unlock_irqrestore(&acm->write_lock, flags);