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Disable PS/2 port testing.

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This is reportedly a problem with some emulated PS/2 controllers.
glauxosdever reported his computer responds 0x50 0x00 instead of just 0x00.
OpenBSD has commented out this check in sys/dev/ic/pckbc.c, claiming it's a
problem with some controllers and that some might even hang.

I doubt not testing ports is going to be a problem, as the identitication
code runs next and verifies devices and all relevant modern hardware
probably has this working well enough.
This commit is contained in:
Jonas 'Sortie' Termansen 2016-02-18 22:03:06 +01:00
parent 2ab9139f35
commit ebdb2a844f
1 changed files with 2 additions and 0 deletions
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2
kernel/x86-family/ps2.cpp
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@ -284,6 +284,7 @@ void Init(PS2Device* keyboard, PS2Device* mouse)
}
bool port_1 = true;
bool port_2 = dual;
#if 0 // Disabled due to some emulated PS/2 controllers not handling this well.
if ( port_1 )
{
if ( !TryWriteCommand(REG_COMMAND_TEST_FIRST_PORT) ||
@ -298,6 +299,7 @@ void Init(PS2Device* keyboard, PS2Device* mouse)
return;
port_2 = byte == 0x00;
}
#endif
size_t port_1_resp_size = 0;
uint8_t port_1_resp[2];
if ( port_1 && !DetectDevice(1, port_1_resp, &port_1_resp_size) )