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xen/evtchn: ports start enabled 

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
This commit is contained in:
Jeremy Fitzhardinge 2009-09-18 16:55:29 -07:00
parent 93afe0b75e
commit 0edce91dcd
1 changed files with 4 additions and 5 deletions
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9
drivers/xen/evtchn.c
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@ -108,10 +108,9 @@ irqreturn_t evtchn_interrupt(int irq, void *data)
u = get_port_user(port);
if (WARN(!get_port_enabled(port),
"Interrupt for port %d, but apparently not enabled; per-user %p\n",
port, u))
goto out;
WARN(!get_port_enabled(port),
"Interrupt for port %d, but apparently not enabled; per-user %p\n",
port, u);
disable_irq_nosync(irq);
set_port_enabled(port, false);
@ -127,7 +126,6 @@ irqreturn_t evtchn_interrupt(int irq, void *data)
} else
u->ring_overflow = 1;
out:
spin_unlock(&port_user_lock);
return IRQ_HANDLED;
@ -265,6 +263,7 @@ static int evtchn_bind_to_user(struct per_user_data *u, int port)
*/
BUG_ON(get_port_user(port) != NULL);
set_port_user(port, u);
set_port_enabled(port, true); /* start enabled */
rc = bind_evtchn_to_irqhandler(port, evtchn_interrupt, IRQF_DISABLED,
u->name, (void *)(unsigned long)port);