BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=2266
Independently of how we decide to address other aspects of the regression
introduced with commit 2de1f611be06ded3a59726a4052a9039be7d459b, it doesn't
make much sense to call for a progress update if PcdPlatformBootTimeOut is
zero.
PcdPlatformBootTimeOut 0, which is the cause of the bug (division by zero)
should be considered to indicate that a platform is not interested in
displaying a progress report, so we alter PlatformBootManagerWaitCallback
to behave that way.
We also change one variable name to make the code more explicit.
Signed-off-by: Pete Batard <p...@akeo.ie>
Reviewed-by: Laszlo Ersek <ler...@redhat.com>
---
OvmfPkg/Library/PlatformBootManagerLib/BdsPlatform.c | 15 ++++++++++++---
1 file changed, 12 insertions(+), 3 deletions(-)
diff --git a/OvmfPkg/Library/PlatformBootManagerLib/BdsPlatform.c
b/OvmfPkg/Library/PlatformBootManagerLib/BdsPlatform.c
index 70df6b841acc..8af9b71f18a3 100644
--- a/OvmfPkg/Library/PlatformBootManagerLib/BdsPlatform.c
+++ b/OvmfPkg/Library/PlatformBootManagerLib/BdsPlatform.c
@@ -1631,9 +1631,18 @@ 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 (since we'd only
+ // ever display a one-shot progress of either 0% or 100%).
+ //
+ if (TimeoutInitial == 0) {
+ return;
+ }
Black.Raw = 0x00000000;
White.Raw = 0x00FFFFFF;
@@ -1643,7 +1652,7 @@ PlatformBootManagerWaitCallback (
Black.Pixel,
L"Start boot option",
White.Pixel,
- (Timeout - TimeoutRemain) * 100 / Timeout,
+ (TimeoutInitial - TimeoutRemain) * 100 / TimeoutInitial,
0
);
}
--
2.21.0.windows.1
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