ipmi: disable IRQ and ATN on an external disconnect

Otherwise there's no way to clear them without an external command,
and it could lock the OS in the VM if they were stuck.

Signed-off-by: Corey Minyard <cminyard@mvista.com>

diff --git a/hw/ipmi/ipmi_bmc_extern.c b/hw/ipmi/ipmi_bmc_extern.c
index 8c0535d3dd7333d0f561f82d304609ded53aae31..bf0b7ee0f599cac2734c2a964478293f9f65509a 100644 (file)
--- a/hw/ipmi/ipmi_bmc_extern.c
+++ b/hw/ipmi/ipmi_bmc_extern.c
@@ -425,6 +425,11 @@ static void chr_event(void *opaque, int event)
             return;
         }
         ibe->connected = false;
+        /*
+         * Don't hang the OS trying to handle the ATN bit, other end will
+         * resend on a reconnect.
+         */
+        k->set_atn(s, 0, 0);
         if (ibe->waiting_rsp) {
             ibe->waiting_rsp = false;
             ibe->inbuf[1] = ibe->outbuf[1] | 0x04;