linux-kernel - [001/115] staging: usbip: remove double giveback of URB

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Date:	Tue, 15 Feb 2011 17:44:27 -0800
From:	Greg KH <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org, stable@...nel.org
Cc:	stable-review@...nel.org, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	Márton Németh <nm127@...email.hu>
Subject: [001/115] staging: usbip: remove double giveback of URB

2.6.32-longterm review patch.  If anyone has any objections, please let us know.

------------------

From: =?UTF-8?q?M=C3=A1rton=20N=C3=A9meth?= <nm127@...email.hu>

commit 7571f089d7522a95c103558faf313c7af8856ceb upstream.

In the vhci_urb_dequeue() function the TCP connection is checked twice.
Each time when the TCP connection is closed the URB is unlinked and given
back. Remove the second attempt of unlinking and giving back of the URB completely.

This patch fixes the bug described at https://bugzilla.kernel.org/show_bug.cgi?id=24872 .

Signed-off-by: Márton Németh <nm127@...email.hu>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>

---
 drivers/staging/usbip/vhci_hcd.c |   14 --------------
 1 file changed, 14 deletions(-)

--- a/drivers/staging/usbip/vhci_hcd.c
+++ b/drivers/staging/usbip/vhci_hcd.c
@@ -798,20 +798,6 @@ static int vhci_urb_dequeue(struct usb_h
 		spin_unlock_irqrestore(&vdev->priv_lock, flags2);
 	}
 
-
-	if (!vdev->ud.tcp_socket) {
-		/* tcp connection is closed */
-		usbip_uinfo("vhci_hcd: vhci_urb_dequeue() gives back urb %p\n",
-									urb);
-
-		usb_hcd_unlink_urb_from_ep(hcd, urb);
-
-		spin_unlock_irqrestore(&the_controller->lock, flags);
-		usb_hcd_giveback_urb(vhci_to_hcd(the_controller), urb,
-								urb->status);
-		spin_lock_irqsave(&the_controller->lock, flags);
-	}
-
 	spin_unlock_irqrestore(&the_controller->lock, flags);
 
 	usbip_dbg_vhci_hc("leave\n");


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