[PATCH 045/149] USB Core: hub.c: prevent re-enumeration on HNP

From: Vikram Pandita <[email protected]>

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 <[email protected]>
Acked-by: Alan Stern <[email protected]>
Acked-by: David Brownell <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
 drivers/usb/core/hub.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 08f0c22..7946d7b 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -1443,7 +1443,7 @@ int usb_new_device(struct usb_device *udev)
 			if (err < 0)
 				dev_dbg(&udev->dev, "HNP fail, %d\n", err);
 		}
-		err = -ENODEV;
+		err = -ENOTSUPP;
 		goto fail;
 	}
 #endif
@@ -2582,7 +2582,7 @@ loop:
 		ep0_reinit(udev);
 		release_address(udev);
 		usb_put_dev(udev);
-		if (status == -ENOTCONN)
+		if ((status == -ENOTCONN) || (status == -ENOTSUPP))
 			break;
 	}
  
-- 
1.5.2.2


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