---

yaml --- r: 265816 b: refs/heads/master c: bdf91cf h: refs/heads/master v: v3
git-mirror · Aug 22, 2011 · b5d36ba · b5d36ba
1 parent 52d2b02
commit b5d36ba
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Showing 2 changed files with 10 additions and 3 deletions.
diff --git 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
@@ -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;