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ps2: migrate ledstate 

Make the ps2 device track its ledstate so that we can migrate it.
Otherwise it gets lost across migration, and spice-server gets
confused about the actual keyboard state and sends bogus
caps/scroll/num key events. This fixes RH bug #729294

We only need to migrate the state when it is different of the default
one (0).

Signed-off-by: Christophe Fergeau <cfergeau@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Christophe Fergeau 2011-10-17 13:37:34 +02:00 committed by Anthony Liguori
parent ae878b172e
commit 7f540ab524
1 changed files with 44 additions and 2 deletions
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46
hw/ps2.c
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@ -92,6 +92,7 @@ typedef struct {
not the keyboard controller. */
int translate;
int scancode_set; /* 1=XT, 2=AT, 3=PS/2 */
int ledstate;
} PS2KbdState;
typedef struct {
@ -195,11 +196,17 @@ uint32_t ps2_read_data(void *opaque)
return val;
}
static void ps2_set_ledstate(PS2KbdState *s, int ledstate)
{
s->ledstate = ledstate;
kbd_put_ledstate(ledstate);
}
static void ps2_reset_keyboard(PS2KbdState *s)
{
s->scan_enabled = 1;
s->scancode_set = 2;
kbd_put_ledstate(0);
ps2_set_ledstate(s, 0);
}
void ps2_write_keyboard(void *opaque, int val)
@ -274,7 +281,7 @@ void ps2_write_keyboard(void *opaque, int val)
s->common.write_cmd = -1;
break;
case KBD_CMD_SET_LEDS:
kbd_put_ledstate(val);
ps2_set_ledstate(s, val);
ps2_queue(&s->common, KBD_REPLY_ACK);
s->common.write_cmd = -1;
break;
@ -557,6 +564,33 @@ static const VMStateDescription vmstate_ps2_common = {
}
};
static bool ps2_keyboard_ledstate_needed(void *opaque)
{
PS2KbdState *s = opaque;
return s->ledstate != 0; /* 0 is default state */
}
static int ps2_kbd_ledstate_post_load(void *opaque, int version_id)
{
PS2KbdState *s = opaque;
kbd_put_ledstate(s->ledstate);
return 0;
}
static const VMStateDescription vmstate_ps2_keyboard_ledstate = {
.name = "ps2kbd/ledstate",
.version_id = 3,
.minimum_version_id = 2,
.minimum_version_id_old = 2,
.post_load = ps2_kbd_ledstate_post_load,
.fields = (VMStateField []) {
VMSTATE_INT32(ledstate, PS2KbdState),
VMSTATE_END_OF_LIST()
}
};
static int ps2_kbd_post_load(void* opaque, int version_id)
{
PS2KbdState *s = (PS2KbdState*)opaque;
@ -578,6 +612,14 @@ static const VMStateDescription vmstate_ps2_keyboard = {
VMSTATE_INT32(translate, PS2KbdState),
VMSTATE_INT32_V(scancode_set, PS2KbdState,3),
VMSTATE_END_OF_LIST()
},
.subsections = (VMStateSubsection []) {
{
.vmsd = &vmstate_ps2_keyboard_ledstate,
.needed = ps2_keyboard_ledstate_needed,
}, {
/* empty */
}
}
};