From david-b@pacbell.net  Sun May 27 11:14:44 2007
From: Vikram Pandita <vikram.pandita@ti.com>
To: Greg KH <greg@kroah.com>
Subject: USB Core: hub.c: prevent re-enumeration on HNP
Date: Fri, 25 May 2007 21:31:07 -0700
Cc: Alan Stern <stern@rowland.harvard.edu>, "Pandita, Vikram" <vikram.pandita@ti.com>
Content-Disposition: inline
Message-Id: <200705252131.10380.david-b@pacbell.net>

From: Vikram Pandita <vikram.pandita@ti.com>

Patch is to prevent the OTG host of doing 3 times enumeration of
device when the Host suspends for HNP.  The error code used in
this case is ENOTSUPP.

Signed-off-by: Vikram Pandita <vikram.pandita@ti.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Acked-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
 drivers/usb/core/hub.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -1449,7 +1449,7 @@ int usb_new_device(struct usb_device *ud
 			if (err < 0)
 				dev_dbg(&udev->dev, "HNP fail, %d\n", err);
 		}
-		err = -ENODEV;
+		err = -ENOTSUPP;
 		goto fail;
 	}
 #endif
@@ -2588,7 +2588,7 @@ loop:
 		ep0_reinit(udev);
 		release_address(udev);
 		usb_put_dev(udev);
-		if (status == -ENOTCONN)
+		if ((status == -ENOTCONN) || (status == -ENOTSUPP))
 			break;
 	}