From b5d36baa9e2a199c557b4846c120d9f08c5ca273 Mon Sep 17 00:00:00 2001
From: Arik Nemtsov <arik@wizery.com>
Date: Sun, 14 Aug 2011 13:17:34 +0300
Subject: [PATCH] --- yaml --- r: 265816 b: refs/heads/master c:
 bdf91cfae66dd76a093c75cac8f6ada12fd21b83 h: refs/heads/master v: v3

---
 [refs]                                   |  2 +-
 trunk/drivers/net/wireless/wl12xx/main.c | 11 +++++++++--
 2 files changed, 10 insertions(+), 3 deletions(-)

diff --git a/[refs] b/[refs]
index 3b2887ecdd7b..6829dd6e3c38 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 742246f8bc16c3a1a556c68ca2fabca162d14c24
+refs/heads/master: bdf91cfae66dd76a093c75cac8f6ada12fd21b83
diff --git a/trunk/drivers/net/wireless/wl12xx/main.c b/trunk/drivers/net/wireless/wl12xx/main.c
index 027b6742a151..0fa3a2281ddb 100644
--- a/trunk/drivers/net/wireless/wl12xx/main.c
+++ b/trunk/drivers/net/wireless/wl12xx/main.c
@@ -834,8 +834,15 @@ static void wl12xx_fw_status(struct wl1271 *wl,
 		wl->tx_pkts_freed[i] = status->tx_released_pkts[i];
 	}
 
-	freed_blocks = le32_to_cpu(status->total_released_blks) -
-		       wl->tx_blocks_freed;
+	/* prevent wrap-around in total blocks counter */
+	if (likely(wl->tx_blocks_freed <=
+		   le32_to_cpu(status->total_released_blks)))
+		freed_blocks = le32_to_cpu(status->total_released_blks) -
+			       wl->tx_blocks_freed;
+	else
+		freed_blocks = 0x100000000LL - wl->tx_blocks_freed +
+			       le32_to_cpu(status->total_released_blks);
+
 	wl->tx_blocks_freed = le32_to_cpu(status->total_released_blks);
 
 	wl->tx_allocated_blocks -= freed_blocks;