[PATCH v2 2/2] ArmVirtPkg/PlatformBootManagerLib: Don't update progress if Pcd is 0

["Pete Batard" <pete@akeo.ie>]

Similar to what we now do for OVMF, we need to consider the possibility
that PlatformBootManagerWaitCallback () may be called with a
PcdPlatformBootTimeOut that was set to zero, in which case the call should
simply return.

We also change the initial timeout variable name to make the code explicit.

Signed-off-by: Pete Batard <pete@akeo.ie>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
---
 ArmVirtPkg/Library/PlatformBootManagerLib/PlatformBm.c | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/ArmVirtPkg/Library/PlatformBootManagerLib/PlatformBm.c b/ArmVirtPkg/Library/PlatformBootManagerLib/PlatformBm.c
index 30c015eec5b0..5f6cfe64daca 100644
--- a/ArmVirtPkg/Library/PlatformBootManagerLib/PlatformBm.c
+++ b/ArmVirtPkg/Library/PlatformBootManagerLib/PlatformBm.c
@@ -842,9 +842,17 @@ PlatformBootManagerWaitCallback (
 {
   EFI_GRAPHICS_OUTPUT_BLT_PIXEL_UNION Black;
   EFI_GRAPHICS_OUTPUT_BLT_PIXEL_UNION White;
-  UINT16                              Timeout;
+  UINT16                              TimeoutInitial;
 
-  Timeout = PcdGet16 (PcdPlatformBootTimeOut);
+  TimeoutInitial = PcdGet16 (PcdPlatformBootTimeOut);
+
+  //
+  // If PcdPlatformBootTimeOut is set to zero, then we consider
+  // that no progress update should be enacted.
+  //
+  if (TimeoutInitial == 0) {
+    return;
+  }
 
   Black.Raw = 0x00000000;
   White.Raw = 0x00FFFFFF;
@@ -854,7 +862,7 @@ PlatformBootManagerWaitCallback (
     Black.Pixel,
     L"Start boot option",
     White.Pixel,
-    (Timeout - TimeoutRemain) * 100 / Timeout,
+    (TimeoutInitial - TimeoutRemain) * 100 / TimeoutInitial,
     0
     );
 }
-- 
2.21.0.windows.1