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Commit ffcdc18d authored by Vikram Pandita's avatar Vikram Pandita Committed by Greg Kroah-Hartman
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USB Core: hub.c: prevent re-enumeration on HNP 



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: default avatarVikram Pandita <vikram.pandita@ti.com>
Acked-by: default avatarAlan Stern <stern@rowland.harvard.edu>
Acked-by: default avatarDavid Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent b29dbbd8

drivers/usb/core/hub.c

+2 −2
Original line number Diff line number Diff line
@@ -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 @@ static void hub_port_connect_change(struct usb_hub *hub, int port1, 
		ep0_reinit(udev);

		release_address(udev);

		usb_put_dev(udev);

		if (status == -ENOTCONN)

		if ((status == -ENOTCONN) || (status == -ENOTSUPP))

			break;

	}