[ 3.5.y.z extended stable ] Patch "xen-netback: remove redundent parameter in" has been added to staging queue

[Luis Henriques]

This is a note to let you know that I have just added a patch titled

    xen-netback: remove redundent parameter in

to the linux-3.5.y-queue branch of the 3.5.y.z extended stable tree 
which can be found at:

 http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.5.y-queue

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.5.y.z tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Luis

------

>From f580eb91e797d5923f212ca4d8de50cdf9308139 Mon Sep 17 00:00:00 2001
From: Wei Liu <wei.liu2 at citrix.com>
Date: Thu, 2 May 2013 00:43:57 +0000
Subject: [PATCH] xen-netback: remove redundent parameter in
 netbk_count_requests

commit ac69c26e7accb04ae2cb9ab0872068983a42b3c8 upstream.

Tracking down from the caller, first_idx is always equal to vif->tx.req_cons.
Remove it to avoid confusion.

Suggested-by: Jan Beulich <jbeulich at suse.com>
Signed-off-by: Wei Liu <wei.liu2 at citrix.com>
Acked-by: Ian Campbell <ian.campbell at citrix.com>
Signed-off-by: David S. Miller <davem at davemloft.net>
Signed-off-by: Luis Henriques <luis.henriques at canonical.com>
---
 drivers/net/xen-netback/netback.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/net/xen-netback/netback.c b/drivers/net/xen-netback/netback.c
index 9990bd8..bc812b7 100644
--- a/drivers/net/xen-netback/netback.c
+++ b/drivers/net/xen-netback/netback.c
@@ -899,7 +899,6 @@ static void netbk_fatal_tx_err(struct xenvif *vif)

 static int netbk_count_requests(struct xenvif *vif,
 				struct xen_netif_tx_request *first,
-				RING_IDX first_idx,
 				struct xen_netif_tx_request *txp,
 				int work_to_do)
 {
@@ -976,7 +975,7 @@ static int netbk_count_requests(struct xenvif *vif,
 	} while ((txp++)->flags & XEN_NETTXF_more_data);

 	if (drop_err) {
-		netbk_tx_err(vif, first, first_idx + slots);
+		netbk_tx_err(vif, first, cons + slots);
 		return drop_err;
 	}

@@ -1446,8 +1445,7 @@ static unsigned xen_netbk_tx_build_gops(struct xen_netbk *netbk)
 				continue;
 		}

-		ret = netbk_count_requests(vif, &txreq, idx,
-					   txfrags, work_to_do);
+		ret = netbk_count_requests(vif, &txreq, txfrags, work_to_do);
 		if (unlikely(ret < 0))
 			continue;

--
1.8.1.2