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

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

backends/testdev.c

@@ -108,7 +108,10 @@ static void testdev_close(struct CharDriverState *chr)
     g_free(testdev);
 }
 
-CharDriverState *chr_testdev_init(void)
+static CharDriverState *chr_testdev_init(const char *id,
+                                         ChardevBackend *backend,
+                                         ChardevReturn *ret,
+                                         Error **errp)
 {
     TestdevCharState *testdev;
     CharDriverState *chr;
@@ -126,7 +129,7 @@ CharDriverState *chr_testdev_init(void)
 static void register_types(void)
 {
     register_char_driver("testdev", CHARDEV_BACKEND_KIND_TESTDEV, NULL,
-                         NULL);
+                         chr_testdev_init);
 }
 
 type_init(register_types);

include/sysemu/char.h

@@ -356,9 +356,6 @@ extern int term_escape_char;
 
 CharDriverState *qemu_char_get_next_serial(void);
 
-/* testdev.c */
-CharDriverState *chr_testdev_init(void);
-
 /* console.c */
 typedef CharDriverState *(VcHandler)(ChardevVC *vc);
 

qemu-char.c

@@ -4318,7 +4318,7 @@ ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend,
             abort();
             break;
         case CHARDEV_BACKEND_KIND_TESTDEV:
-            chr = chr_testdev_init();
+            abort();
             break;
         case CHARDEV_BACKEND_KIND_STDIO:
             chr = qemu_chr_open_stdio(backend->stdio);

stubs/Makefile.objs

@@ -1,6 +1,5 @@
 stub-obj-y += arch-query-cpu-def.o
 stub-obj-y += bdrv-commit-all.o
-stub-obj-y += chr-testdev.o
 stub-obj-y += clock-warp.o
 stub-obj-y += cpu-get-clock.o
 stub-obj-y += cpu-get-icount.o

stubs/chr-testdev.c

@@ -1,7 +0,0 @@
-#include "qemu-common.h"
-#include "sysemu/char.h"
-
-CharDriverState *chr_testdev_init(void)
-{
-    return 0;
-}