[staging/FmpDevicePkg-master][PATCH] FmpDevicePkg FmpDxe: Return 0 when LSV check is not required

[Star Zeng <star.zeng@intel.com>]

Current code return 1 when LSV check is not required,
but 1 LSV will make 0 Version capsule image update failed.

0 LSV is valid, this patch updates the code to return 0 when
LSV check is not required
We can see even the DEFAULT_LOWESTSUPPORTEDVERSION is 0.

Cc: Michael D Kinney <michael.d.kinney@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Star Zeng <star.zeng@intel.com>
---
 FmpDevicePkg/FmpDxe/FmpDxe.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/FmpDevicePkg/FmpDxe/FmpDxe.c b/FmpDevicePkg/FmpDxe/FmpDxe.c
index c0c1383723fb..d6b599ee1a56 100644
--- a/FmpDevicePkg/FmpDxe/FmpDxe.c
+++ b/FmpDevicePkg/FmpDxe/FmpDxe.c
@@ -210,12 +210,15 @@ GetLowestSupportedVersion (
   // Get the LowestSupportedVersion.
   //
 
-  DeviceLibLowestSupportedVersion = DEFAULT_LOWESTSUPPORTEDVERSION;
-  ReturnLsv = PcdGet32 (PcdFmpDeviceBuildTimeLowestSupportedVersion);
   if (!IsLowestSupportedVersionCheckRequired ()) {
-    return 1;
+    //
+    // Any Versioon can pass the 0 LowestSupportedVersion check.
+    //
+    return 0;
   }
 
+  ReturnLsv = PcdGet32 (PcdFmpDeviceBuildTimeLowestSupportedVersion);
+
   //
   // Check the FmpDeviceLib
   //
-- 
2.7.0.windows.1