linux-kernel - [20/83] xen-netback: remove redundent parameter in netbk_count

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Date:	Sun, 16 Jun 2013 23:01:37 +0100
From:	Ben Hutchings <ben@...adent.org.uk>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:	akpm@...ux-foundation.org, "Wei Liu" <wei.liu2@...rix.com>,
	"Ian Campbell" <ian.campbell@...rix.com>,
	"Jan Beulich" <jbeulich@...e.com>,
	"David S. Miller" <davem@...emloft.net>
Subject: [20/83] xen-netback: remove redundent parameter in
 netbk_count_requests

3.2.47-rc1 review patch.  If anyone has any objections, please let me know.

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

From: Wei Liu <wei.liu2@...rix.com>

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@...e.com>
Signed-off-by: Wei Liu <wei.liu2@...rix.com>
Acked-by: Ian Campbell <ian.campbell@...rix.com>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 drivers/net/xen-netback/netback.c |    6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

--- a/drivers/net/xen-netback/netback.c
+++ b/drivers/net/xen-netback/netback.c
@@ -900,7 +900,6 @@ static void netbk_fatal_tx_err(struct xe
 
 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)
 {
@@ -977,7 +976,7 @@ static int netbk_count_requests(struct x
 	} 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;
 	}
 
@@ -1447,8 +1446,7 @@ static unsigned xen_netbk_tx_build_gops(
 				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;
 

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