From: yangkai <yk@rock-chips.com>
Date: Mon, 5 Dec 2011 08:14:05 +0000 (+0800)
Subject: disable async suspend in usb system
X-Git-Tag: firefly_0821_release~9728
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=9f20bc395757177ae0bcaa240c1b5350a792ce6c;p=firefly-linux-kernel-4.4.55.git

disable async suspend in usb system
---

diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 576bf90ba773..447284884115 100755
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -1898,7 +1898,11 @@ int usb_new_device(struct usb_device *udev)
 	/* Tell the world! */
 	announce_device(udev);
 
-	device_enable_async_suspend(&udev->dev);
+	/* kever@rk 20111205
+	 * We don't use async suspend in rk29 usb
+	 * to make sure usb1.1 host is suspend before usb 2.0 host.
+	 */
+	//device_enable_async_suspend(&udev->dev);
 	/* Register the device.  The device driver is responsible
 	 * for configuring the device and invoking the add-device
 	 * notifier chain (used by usbfs and possibly others).