From 84cce644566578ef201b3122c06d8d2cb40a5130 Mon Sep 17 00:00:00 2001
From: Asai Thambi S P <asamymuthupa@micron.com>
Date: Tue, 29 May 2012 18:44:01 -0700
Subject: [PATCH] --- yaml --- r: 309615 b: refs/heads/master c:
 377b8fc6d70aab90ccfc053630c65835defbc3f8 h: refs/heads/master i:   309613:
 f3a9622ef9456626425be811b408b749752f1897   309611:
 bea24159fd58f8f1ff00ccde8690337928be85cf   309607:
 9563dc59809550202301e588c88fcecf91191d3f   309599:
 5f4b9ff7c551cdd735f7164342204d6ca4afc2e3 v: v3

---
 [refs]                                  | 2 +-
 trunk/drivers/block/mtip32xx/mtip32xx.c | 2 ++
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/[refs] b/[refs]
index 42e0c647341e..0adcf70c8f04 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: e602878fd89dab0af2af995a6bef0fbe97b20dc8
+refs/heads/master: 377b8fc6d70aab90ccfc053630c65835defbc3f8
diff --git a/trunk/drivers/block/mtip32xx/mtip32xx.c b/trunk/drivers/block/mtip32xx/mtip32xx.c
index cd271d5e1b73..29735316730a 100644
--- a/trunk/drivers/block/mtip32xx/mtip32xx.c
+++ b/trunk/drivers/block/mtip32xx/mtip32xx.c
@@ -970,6 +970,8 @@ static inline void mtip_process_sdbf(struct driver_data *dd)
 	/* walk all bits in all slot groups */
 	for (group = 0; group < dd->slot_groups; group++) {
 		completed = readl(port->completed[group]);
+		if (!completed)
+			continue;
 
 		/* clear completed status register in the hardware.*/
 		writel(completed, port->completed[group]);