[ros-diffs] [reactos] 01/01: [ISAPNP] Correctly calculate checksum

[Hervé Poussineau]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=40b2f65f0c8a2836bf958…

commit 40b2f65f0c8a2836bf9589860d23377160eb3946
Author:     Hervé Poussineau <hpoussin(a)reactos.org>
AuthorDate: Fri Feb 7 23:48:22 2020 +0100
Commit:     Hervé Poussineau <hpoussin(a)reactos.org>
CommitDate: Fri Feb 7 23:48:53 2020 +0100

    [ISAPNP] Correctly calculate checksum
    
    See appendix B.2 of "Plug and Play ISA Specification 1.0a"
---
 drivers/bus/isapnp/hardware.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/bus/isapnp/hardware.c b/drivers/bus/isapnp/hardware.c
index c578270379b..0e735f10312 100644
--- a/drivers/bus/isapnp/hardware.c
+++ b/drivers/bus/isapnp/hardware.c
@@ -178,10 +178,10 @@ HwDelay(VOID)
 
 static
 inline
-USHORT
-NextLFSR(USHORT Lfsr, USHORT InputBit)
+UCHAR
+NextLFSR(UCHAR Lfsr, UCHAR InputBit)
 {
-  ULONG NextLfsr = Lfsr >> 1;
+  UCHAR NextLfsr = Lfsr >> 1;
 
   NextLfsr |= (((Lfsr ^ NextLfsr) ^ InputBit)) << 7;
 
@@ -192,7 +192,7 @@ static
 VOID
 SendKey(VOID)
 {
-  USHORT i, Lfsr;
+  UCHAR i, Lfsr;
 
   HwDelay();
   WriteAddress(0x00);
@@ -241,7 +241,7 @@ static
 USHORT
 IsaPnpChecksum(PISAPNP_IDENTIFIER Identifier)
 {
-  USHORT i,j, Lfsr, Byte;
+  UCHAR i, j, Lfsr, Byte;
 
   Lfsr = ISAPNP_LFSR_SEED;
   for (i = 0; i < 8; i++)