From 6d47175f17c01a48f33b0b2737f4b6cdd505b092 Mon Sep 17 00:00:00 2001
From: Stepan Moskovchenko <stepanm@codeaurora.org>
Date: Fri, 12 Nov 2010 19:29:54 -0800
Subject: [PATCH] --- yaml --- r: 225684 b: refs/heads/master c:
 f6f41eb9ccc0e6fad0ccba4c5e0a97de935db734 h: refs/heads/master v: v3

---
 [refs]                          |  2 +-
 trunk/arch/arm/mach-msm/iommu.c | 15 +++++++++------
 2 files changed, 10 insertions(+), 7 deletions(-)

diff --git a/[refs] b/[refs]
index cf1c98df6bf5..71daa2163907 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 516cbc793eb4be5123289d067b54dfcdabeddb25
+refs/heads/master: f6f41eb9ccc0e6fad0ccba4c5e0a97de935db734
diff --git a/trunk/arch/arm/mach-msm/iommu.c b/trunk/arch/arm/mach-msm/iommu.c
index 134add789187..74f2157eba4e 100644
--- a/trunk/arch/arm/mach-msm/iommu.c
+++ b/trunk/arch/arm/mach-msm/iommu.c
@@ -50,13 +50,16 @@ static void __flush_iotlb(struct iommu_domain *domain)
 	unsigned long *fl_table = priv->pgtable;
 	int i;
 
-	dmac_flush_range(fl_table, fl_table + SZ_16K);
+	if (!list_empty(&priv->list_attached)) {
+		dmac_flush_range(fl_table, fl_table + SZ_16K);
 
-	for (i = 0; i < NUM_FL_PTE; i++)
-		if ((fl_table[i] & 0x03) == FL_TYPE_TABLE) {
-			void *sl_table = __va(fl_table[i] & FL_BASE_MASK);
-			dmac_flush_range(sl_table, sl_table + SZ_4K);
-		}
+		for (i = 0; i < NUM_FL_PTE; i++)
+			if ((fl_table[i] & 0x03) == FL_TYPE_TABLE) {
+				void *sl_table = __va(fl_table[i] &
+								FL_BASE_MASK);
+				dmac_flush_range(sl_table, sl_table + SZ_4K);
+			}
+	}
 #endif
 
 	list_for_each_entry(ctx_drvdata, &priv->list_attached, attached_elm) {