From 2b30a321fe0175288a5f00e17fc8cad764279224 Mon Sep 17 00:00:00 2001 From: Marcus Overhagen Date: Wed, 25 Apr 2007 21:28:45 +0000 Subject: [PATCH] Workaround for bug report #1175. This is hardware bug. git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20828 a95241bf-73f2-0310-859d-f6bbb57e9c96 --- src/add-ons/kernel/bus_managers/ps2/ps2_common.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/src/add-ons/kernel/bus_managers/ps2/ps2_common.c b/src/add-ons/kernel/bus_managers/ps2/ps2_common.c index ddd8dee782..5e349d3f7c 100644 --- a/src/add-ons/kernel/bus_managers/ps2/ps2_common.c +++ b/src/add-ons/kernel/bus_managers/ps2/ps2_common.c @@ -176,6 +176,13 @@ ps2_setup_active_multiplexing(bool *enabled) no_support: TRACE("ps2: active multiplexing not supported\n"); *enabled = false; + // some controllers get upset by the d3 command and will continue data + // loopback, thus send a harmless command (enable keybaord interface) + // see bug report #1175 + res = ps2_command(0xae, NULL, 0, NULL, 0); + if (res != B_OK) { + INFO("ps2: active multiplexing d3 workaround failed, status 0x%08lx\n", res); + } return B_OK; fail: