Kernel: Fix scrolling up in VMware

The mouse wheel delta is provided as a signed 8 bit value.
lanmonster · Mar 1, 2021 · b4c1b96 · b4c1b96
1 parent 152af3a
commit b4c1b96
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/Kernel/Devices/VMWareBackdoor.cpp b/Kernel/Devices/VMWareBackdoor.cpp
@@ -231,7 +231,7 @@ Optional<MousePacket> VMWareBackdoor::receive_mouse_packet()
  int buttons = (command.ax & 0xFFFF);
  int x = (command.bx);
  int y = (command.cx);
- int z = (command.dx);
+ int z = (i8)(command.dx); // signed 8 bit value only!
 
  if constexpr (PS2MOUSE_DEBUG) {
  dbgln("Absolute Mouse: Buttons {:x}", buttons);