From: Keir Fraser <keir.fraser@citrix.com>
Date: Thu, 8 May 2008 10:53:39 +0000 (+0100)
Subject: minios: clear the event before calling the handler since (especially
X-Git-Tag: archive/raspbian/4.8.0-1+rpi1~1^2~14215^2~47
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=b585b4dfa76737c797d6a981eacc99eb54551331;p=xen.git

minios: clear the event before calling the handler since (especially
in the SMP case) the handler may make another domain send an event
again, and that must not be lost.

Signed-off-by: Samuel Thibault <samuel.thibault@eu.citrix.com>
---

diff --git a/extras/mini-os/events.c b/extras/mini-os/events.c
index 51a3cc24f0..f47fc38822 100644
--- a/extras/mini-os/events.c
+++ b/extras/mini-os/events.c
@@ -58,9 +58,12 @@ void unbind_all_ports(void)
 int do_event(evtchn_port_t port, struct pt_regs *regs)
 {
     ev_action_t  *action;
+
+    clear_evtchn(port);
+
     if (port >= NR_EVS) {
         printk("Port number too large: %d\n", port);
-		goto out;
+        return 1;
     }
 
     action = &ev_actions[port];
@@ -69,9 +72,6 @@ int do_event(evtchn_port_t port, struct pt_regs *regs)
     /* call the handler */
 	action->handler(port, regs, action->data);
 
- out:
-	clear_evtchn(port);
-
     return 1;
 
 }