diff --git a/drivers/iommu/amd/init.c b/drivers/iommu/amd/init.c
index 6eaefc9e7b3d60f6ef2bb0ab629466cc66c3f3d6..e988f6f198c5c7b9769ef133a001ab297692ea42 100644
--- a/drivers/iommu/amd/init.c
+++ b/drivers/iommu/amd/init.c
@@ -84,7 +84,7 @@
 #define ACPI_DEVFLAG_LINT1              0x80
 #define ACPI_DEVFLAG_ATSDIS             0x10000000
 
-#define LOOP_TIMEOUT	100000
+#define LOOP_TIMEOUT	2000000
 /*
  * ACPI table definitions
  *