From: Chen Gang <gang.chen@asianux.com>
Date: Mon, 1 Apr 2013 05:04:08 +0000 (+0800)
Subject: USB: driver.c: processing failure, maching resume condition with suspend condition
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=505bdbc79d20f8f2a56c02498f079bb23b0ef756;p=linux-beck.git

USB: driver.c: processing failure, maching resume condition with suspend condition

  when suspend, it need check 'udev->actconfig'.
  so when process failure, also need check it.

Signed-off-by: Chen Gang <gang.chen@asianux.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c
index 84d2b0585810..6eab440e1542 100644
--- a/drivers/usb/core/driver.c
+++ b/drivers/usb/core/driver.c
@@ -1253,10 +1253,12 @@ static int usb_suspend_both(struct usb_device *udev, pm_message_t msg)
 
 	/* If the suspend failed, resume interfaces that did get suspended */
 	if (status != 0) {
-		msg.event ^= (PM_EVENT_SUSPEND | PM_EVENT_RESUME);
-		while (++i < n) {
-			intf = udev->actconfig->interface[i];
-			usb_resume_interface(udev, intf, msg, 0);
+		if (udev->actconfig) {
+			msg.event ^= (PM_EVENT_SUSPEND | PM_EVENT_RESUME);
+			while (++i < n) {
+				intf = udev->actconfig->interface[i];
+				usb_resume_interface(udev, intf, msg, 0);
+			}
 		}
 
 	/* If the suspend succeeded then prevent any more URB submissions