[PATCH] spice: simplify chardev setup

[Gerd Hoffmann <kraxel@redhat.com>]

Initialize spice before chardevs.  That allows to register the spice
chardevs directly in the init function and removes the need to maintain
a linked list of chardevs just for registration.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
 include/chardev/spice.h |  1 -
 include/ui/qemu-spice.h |  1 -
 chardev/spice.c         | 29 ++++++-----------------------
 softmmu/vl.c            |  9 +++++----
 ui/spice-core.c         |  2 --
 5 files changed, 11 insertions(+), 31 deletions(-)

diff --git a/include/chardev/spice.h b/include/chardev/spice.h
index 1f7339b649dc..2013255f34fd 100644
--- a/include/chardev/spice.h
+++ b/include/chardev/spice.h
@@ -12,7 +12,6 @@ typedef struct SpiceChardev {
     bool                  blocked;
     const uint8_t         *datapos;
     int                   datalen;
-    QLIST_ENTRY(SpiceChardev) next;
 } SpiceChardev;
 
 #define TYPE_CHARDEV_SPICE "chardev-spice"
diff --git a/include/ui/qemu-spice.h b/include/ui/qemu-spice.h
index 8c23dfe71797..d34cea2e0fcd 100644
--- a/include/ui/qemu-spice.h
+++ b/include/ui/qemu-spice.h
@@ -46,7 +46,6 @@ int qemu_spice_migrate_info(const char *hostname, int port, int tls_port,
 #else
 #define SPICE_NEEDS_SET_MM_TIME 0
 #endif
-void qemu_spice_register_ports(void);
 
 #else  /* CONFIG_SPICE */
 
diff --git a/chardev/spice.c b/chardev/spice.c
index bf7ea1e2940d..9733f0671699 100644
--- a/chardev/spice.c
+++ b/chardev/spice.c
@@ -14,9 +14,6 @@ typedef struct SpiceCharSource {
     SpiceChardev       *scd;
 } SpiceCharSource;
 
-static QLIST_HEAD(, SpiceChardev) spice_chars =
-    QLIST_HEAD_INITIALIZER(spice_chars);
-
 static int vmc_write(SpiceCharDeviceInstance *sin, const uint8_t *buf, int len)
 {
     SpiceChardev *scd = container_of(sin, SpiceChardev, sin);
@@ -216,8 +213,6 @@ static void char_spice_finalize(Object *obj)
 
     vmc_unregister_interface(s);
 
-    QLIST_SAFE_REMOVE(s, next);
-
     g_free((char *)s->sin.subtype);
     g_free((char *)s->sin.portname);
 }
@@ -256,8 +251,6 @@ static void chr_open(Chardev *chr, const char *subtype)
 
     s->active = false;
     s->sin.subtype = g_strdup(subtype);
-
-    QLIST_INSERT_HEAD(&spice_chars, s, next);
 }
 
 static void qemu_chr_open_spice_vmc(Chardev *chr,
@@ -310,28 +303,18 @@ void qemu_chr_open_spice_port(Chardev *chr,
         return;
     }
 
+    if (!using_spice) {
+        error_setg(errp, "spice not enabled");
+        return;
+    }
+
     chr_open(chr, "port");
 
     *be_opened = false;
     s = SPICE_CHARDEV(chr);
     s->sin.portname = g_strdup(name);
 
-    if (using_spice) {
-        /* spice server already created */
-        vmc_register_interface(s);
-    }
-}
-
-void qemu_spice_register_ports(void)
-{
-    SpiceChardev *s;
-
-    QLIST_FOREACH(s, &spice_chars, next) {
-        if (s->sin.portname == NULL) {
-            continue;
-        }
-        vmc_register_interface(s);
-    }
+    vmc_register_interface(s);
 }
 
 static void qemu_chr_parse_spice_vmc(QemuOpts *opts, ChardevBackend *backend,
diff --git a/softmmu/vl.c b/softmmu/vl.c
index f476ef89edb7..bc0dcc4f58bd 100644
--- a/softmmu/vl.c
+++ b/softmmu/vl.c
@@ -4125,6 +4125,11 @@ void qemu_init(int argc, char **argv, char **envp)
     page_size_init();
     socket_init();
 
+    /* spice needs the timers to be initialized by this point */
+    /* spice must initialize before audio as it changes the default auiodev */
+    /* spice must initialize before chardevs (for spicevmc and spiceport) */
+    qemu_spice_init();
+
     qemu_opts_foreach(qemu_find_opts("object"),
                       user_creatable_add_opts_foreach,
                       object_create_initial, &error_fatal);
@@ -4139,10 +4144,6 @@ void qemu_init(int argc, char **argv, char **envp)
                       fsdev_init_func, NULL, &error_fatal);
 #endif
 
-    /* spice needs the timers to be initialized by this point */
-    /* spice must initialize before audio as it changes the default auiodev */
-    qemu_spice_init();
-
     /*
      * Note: we need to create audio and block backends before
      * machine_set_property(), so machine properties can refer to
diff --git a/ui/spice-core.c b/ui/spice-core.c
index ecc2ec2c55c2..37dd68f2aba2 100644
--- a/ui/spice-core.c
+++ b/ui/spice-core.c
@@ -813,8 +813,6 @@ void qemu_spice_init(void)
     g_free(x509_cert_file);
     g_free(x509_cacert_file);
 
-    qemu_spice_register_ports();
-
 #ifdef HAVE_SPICE_GL
     if (qemu_opt_get_bool(opts, "gl", 0)) {
         if ((port != 0) || (tls_port != 0)) {
-- 
2.18.4