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Kernel: Fix scrolling up in VMware

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The mouse wheel delta is provided as a signed 8 bit value.
This commit is contained in:
Tom 2021-02-28 13:58:21 -07:00 committed by Andreas Kling
parent 152af3a297
commit b4c1b96d96
Notes: sideshowbarker 2024-07-18 21:50:12 +09:00 
Author: https://github.com/tomuta
Commit: https://github.com/SerenityOS/serenity/commit/b4c1b96d96d
Pull-request: https://github.com/SerenityOS/serenity/pull/5576
1 changed files with 1 additions and 1 deletions
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Kernel/Devices/VMWareBackdoor.cpp
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@ -231,7 +231,7 @@ Optional<MousePacket> VMWareBackdoor::receive_mouse_packet()
int buttons = (command.ax & 0xFFFF); int buttons = (command.ax & 0xFFFF);
int x = (command.bx); int x = (command.bx);
int y = (command.cx); int y = (command.cx);
int z = (command.dx); int z = (i8)(command.dx); // signed 8 bit value only!
if constexpr (PS2MOUSE_DEBUG) { if constexpr (PS2MOUSE_DEBUG) {
dbgln("Absolute Mouse: Buttons {:x}", buttons); dbgln("Absolute Mouse: Buttons {:x}", buttons);