From: Johan Hovold <jhovold@gmail.com>
Date: Mon, 26 May 2014 17:23:50 +0000 (+0200)
Subject: USB: cdc-acm: remove redundant usb_mark_last_busy
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=308fee18e0f06215b47b54a2b254bfaf55527bdd;p=deliverable%2Flinux.git

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 <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c
index 3c7cfac48e30..8f654ce52570 100644
--- 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);