1 files changed, 4 insertions, 4 deletions

diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index 1457f931218e..78188bf7e90d 100644
--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c
@@ -363,7 +363,7 @@ static int dmar_map_gfx = 1;
 static int dmar_forcedac;
 static int intel_iommu_strict;
 static int intel_iommu_superpage = 1;
-static int intel_iommu_sm = 1;
+static int intel_iommu_sm;
 static int iommu_identity_mapping;
 
 #define IDENTMAP_ALL            1
@@ -456,9 +456,9 @@ static int __init intel_iommu_setup(char *str)
                 } else if (!strncmp(str, "sp_off", 6)) {
                         pr_info("Disable supported super page\n");
                         intel_iommu_superpage = 0;
-                } else if (!strncmp(str, "sm_off", 6)) {
-                        pr_info("Intel-IOMMU: disable scalable mode support\n");
-                        intel_iommu_sm = 0;
+                } else if (!strncmp(str, "sm_on", 5)) {
+                        pr_info("Intel-IOMMU: scalable mode supported\n");
+                        intel_iommu_sm = 1;
                 } else if (!strncmp(str, "tboot_noforce", 13)) {
                         printk(KERN_INFO
                                 "Intel-IOMMU: not forcing on after tboot. This could expose security risk for tboot\n");