diff options
| -rw-r--r-- | Kernel/Devices/HID/VMWareMouseDevice.cpp | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/Kernel/Devices/HID/VMWareMouseDevice.cpp b/Kernel/Devices/HID/VMWareMouseDevice.cpp index f2a6908153..05ba5f0d19 100644 --- a/Kernel/Devices/HID/VMWareMouseDevice.cpp +++ b/Kernel/Devices/HID/VMWareMouseDevice.cpp @@ -25,10 +25,11 @@ UNMAP_AFTER_INIT RefPtr<VMWareMouseDevice> VMWareMouseDevice::try_to_initialize( return {}; } -void VMWareMouseDevice::irq_handle_byte_read(u8) +void VMWareMouseDevice::irq_handle_byte_read(u8 byte) { VERIFY(VMWareBackdoor::the()); VERIFY(VMWareBackdoor::the()->vmmouse_is_absolute()); + // We won't receive complete packets with the backdoor enabled, // we will only get one byte for each event, which we'll just // discard. If we were to wait until we *think* that we got a @@ -36,6 +37,12 @@ void VMWareMouseDevice::irq_handle_byte_read(u8) // because we wouldn't read the appropriate number of mouse // packets from VMWareBackdoor. auto mouse_packet = VMWareBackdoor::the()->receive_mouse_packet(); + + // Only process packets with bit 3 set. + // Note that this needs to happen _after_ invoking receive_mouse_packet() above + if (!(byte & 0x8)) + return; + if (mouse_packet.has_value()) { m_entropy_source.add_random_event(mouse_packet.value()); { |