qemu-char: convert msmouse backend to data-driven creation

Reviewed-by: NEric Blake <eblake@redhat.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

backends/msmouse.c

@@ -63,7 +63,10 @@ static void msmouse_chr_close (struct CharDriverState *chr)
     g_free (chr);
 }
 
-CharDriverState *qemu_chr_open_msmouse(void)
+static CharDriverState *qemu_chr_open_msmouse(const char *id,
+                                              ChardevBackend *backend,
+                                              ChardevReturn *ret,
+                                              Error **errp)
 {
     CharDriverState *chr;
 
@@ -80,7 +83,7 @@ CharDriverState *qemu_chr_open_msmouse(void)
 static void register_types(void)
 {
     register_char_driver("msmouse", CHARDEV_BACKEND_KIND_MSMOUSE, NULL,
-                         NULL);
+                         qemu_chr_open_msmouse);
 }
 
 type_init(register_types);

include/sysemu/char.h

@@ -356,9 +356,6 @@ extern int term_escape_char;
 
 CharDriverState *qemu_char_get_next_serial(void);
 
-/* msmouse */
-CharDriverState *qemu_chr_open_msmouse(void);
-
 /* testdev.c */
 CharDriverState *chr_testdev_init(void);
 

qemu-char.c

@@ -4312,7 +4312,7 @@ ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend,
             abort();
             break;
         case CHARDEV_BACKEND_KIND_MSMOUSE:
-            chr = qemu_chr_open_msmouse();
+            abort();
             break;
 #ifdef CONFIG_BRLAPI
         case CHARDEV_BACKEND_KIND_BRAILLE:

stubs/Makefile.objs

 stub-obj-y += arch-query-cpu-def.o
 stub-obj-y += bdrv-commit-all.o
 stub-obj-y += chr-baum-init.o
-stub-obj-y += chr-msmouse.o
 stub-obj-y += chr-testdev.o
 stub-obj-y += clock-warp.o
 stub-obj-y += cpu-get-clock.o

stubs/chr-msmouse.c

-#include "qemu-common.h"
-#include "sysemu/char.h"
-
-CharDriverState *qemu_chr_open_msmouse(void)
-{
-    return 0;
-}