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vmmouse: adapt to mouse handler changes. 

This patch updates the vmmouse handler registration and activation.

Old behavior:
  vmmouse_read_id, vmmouse_request_relative and vmmouse_request_absolute
  unregister the handler and re-register it.

New behavior:
  vmmouse_request_relative and vmmouse_request_absolute will unregister
  the handler in case the mode did change.  Then register and active the
  handler with current mode if needed.

Note that the old code never ever *activates* the handler, so the
vmmouse doesn't receive events.  This trips up Fedora 14 for example:
Boot a default install without usb tablet, watch the X-Server activating
the vmmouse then, enjoy a non-functional mouse.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Gerd Hoffmann 2010-10-08 12:30:13 +02:00 committed by Anthony Liguori
parent 45b23ff8f0
commit cd49692615
1 changed files with 21 additions and 10 deletions
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31
hw/vmmouse.c
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@ -100,16 +100,29 @@ static void vmmouse_mouse_event(void *opaque, int x, int y, int dz, int buttons_
i8042_isa_mouse_fake_event(s->ps2_mouse);
}
static void vmmouse_update_handler(VMMouseState *s)
static void vmmouse_remove_handler(VMMouseState *s)
{
if (s->entry) {
qemu_remove_mouse_event_handler(s->entry);
s->entry = NULL;
}
if (s->status == 0)
}
static void vmmouse_update_handler(VMMouseState *s, int absolute)
{
if (s->status != 0) {
return;
}
if (s->absolute != absolute) {
s->absolute = absolute;
vmmouse_remove_handler(s);
}
if (s->entry == NULL) {
s->entry = qemu_add_mouse_event_handler(vmmouse_mouse_event,
s, s->absolute,
"vmmouse");
qemu_activate_mouse_event_handler(s->entry);
}
}
static void vmmouse_read_id(VMMouseState *s)
@ -121,28 +134,25 @@ static void vmmouse_read_id(VMMouseState *s)
s->queue[s->nb_queue++] = VMMOUSE_VERSION;
s->status = 0;
vmmouse_update_handler(s);
}
static void vmmouse_request_relative(VMMouseState *s)
{
DPRINTF("vmmouse_request_relative()\n");
s->absolute = 0;
vmmouse_update_handler(s);
vmmouse_update_handler(s, 0);
}
static void vmmouse_request_absolute(VMMouseState *s)
{
DPRINTF("vmmouse_request_absolute()\n");
s->absolute = 1;
vmmouse_update_handler(s);
vmmouse_update_handler(s, 1);
}
static void vmmouse_disable(VMMouseState *s)
{
DPRINTF("vmmouse_disable()\n");
s->status = 0xffff;
vmmouse_update_handler(s);
vmmouse_remove_handler(s);
}
static void vmmouse_data(VMMouseState *s, uint32_t *data, uint32_t size)
@ -154,7 +164,7 @@ static void vmmouse_data(VMMouseState *s, uint32_t *data, uint32_t size)
if (size == 0 || size > 6 || size > s->nb_queue) {
printf("vmmouse: driver requested too much data %d\n", size);
s->status = 0xffff;
vmmouse_update_handler(s);
vmmouse_remove_handler(s);
return;
}
@ -239,7 +249,8 @@ static int vmmouse_post_load(void *opaque, int version_id)
{
VMMouseState *s = opaque;
vmmouse_update_handler(s);
vmmouse_remove_handler(s);
vmmouse_update_handler(s, s->absolute);
return 0;
}