To align the way in MdeModulePkg SerialPortLib and PciSioSerialDxe driver,
Divisor is added by one when the reminder is more than half (16 * BaudRate).
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Liming Gao <liming....@intel.com>
Cc: Ruiyu Ni <ruiyu...@intel.com>
---
IntelFrameworkModulePkg/Bus/Isa/IsaSerialDxe/Serial.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/IntelFrameworkModulePkg/Bus/Isa/IsaSerialDxe/Serial.c
b/IntelFrameworkModulePkg/Bus/Isa/IsaSerialDxe/Serial.c
index 57ee669d14..7824d38a9c 100644
--- a/IntelFrameworkModulePkg/Bus/Isa/IsaSerialDxe/Serial.c
+++ b/IntelFrameworkModulePkg/Bus/Isa/IsaSerialDxe/Serial.c
@@ -1,7 +1,7 @@
/** @file
Serial driver for standard UARTS on an ISA bus.
-Copyright (c) 2006 - 2015, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD
License
which accompanies this distribution. The full text of the license may be
found at
@@ -1397,7 +1397,7 @@ IsaSerialSetAttributes (
((UINT32) BaudRate * 16),
&Remained
);
- if (Remained != 0) {
+ if (Remained >= ((UINT32) BaudRate * 8)) {
Divisor += 1;
}
--
2.16.2.windows.1
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