qdev: Replace cannot_instantiate_with_device_add_yet with !user_creatable

cannot_instantiate_with_device_add_yet was introduced by commit
efec3dd631d94160288392721a5f9c39e50fb2bc to replace no_user. It was
supposed to be a temporary measure.

When it was introduced, we had 54
cannot_instantiate_with_device_add_yet=true lines in the code.
Today (3 years later) this number has not shrunk: we now have
57 cannot_instantiate_with_device_add_yet=true lines. I think it
is safe to say it is not a temporary measure, and we won't see
the flag go away soon.

Instead of a long field name that misleads people to believe it
is temporary, replace it a shorter and less misleading field:
user_creatable.

Except for code comments, changes were generated using the
following Coccinelle patch:

  @@
  expression DC;
  @@
  (
  -DC->cannot_instantiate_with_device_add_yet = false;
  +DC->user_creatable = true;
  |
  -DC->cannot_instantiate_with_device_add_yet = true;
  +DC->user_creatable = false;
  )

  @@
  typedef ObjectClass;
  expression dc;
  identifier class, data;
  @@
   static void device_class_init(ObjectClass *class, void *data)
   {
   ...
   dc->hotpluggable = true;
  +dc->user_creatable = true;
   ...
   }

  @@
  @@
   struct DeviceClass {
   ...
  -bool cannot_instantiate_with_device_add_yet;
  +bool user_creatable;
   ...
  }

  @@
  expression DC;
  @@
  (
  -!DC->cannot_instantiate_with_device_add_yet
  +DC->user_creatable
  |
  -DC->cannot_instantiate_with_device_add_yet
  +!DC->user_creatable
  )

Cc: Alistair Francis <alistair.francis@xilinx.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Marcel Apfelbaum <marcel@redhat.com>
Cc: Markus Armbruster <armbru@redhat.com>
Cc: Peter Maydell <peter.maydell@linaro.org>
Cc: Thomas Huth <thuth@redhat.com>
Acked-by: Alistair Francis <alistair.francis@xilinx.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Marcel Apfelbaum <marcel@redhat.com>
Acked-by: Marcel Apfelbaum <marcel@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Message-Id: <20170503203604.31462-2-ehabkost@redhat.com>
[ehabkost: kept "TODO remove once we're there" comment]
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>

3 files changed, 3 insertions, 3 deletions

diff --git a/hw/net/dp8393x.c b/hw/net/dp8393x.c
index efa33ad..b53fcaa 100644
--- a/hw/net/dp8393x.c
+++ b/hw/net/dp8393x.c
@@ -934,7 +934,7 @@ static void dp8393x_class_init(ObjectClass *klass, void *data)
     dc->vmsd = &vmstate_dp8393x;
     dc->props = dp8393x_properties;
     /* Reason: dma_mr property can't be set */
-    dc->cannot_instantiate_with_device_add_yet = true;
+    dc->user_creatable = false;
 }
 
 static const TypeInfo dp8393x_info = {
diff --git a/hw/net/etraxfs_eth.c b/hw/net/etraxfs_eth.c
index efaa49f..013c8d0 100644
--- a/hw/net/etraxfs_eth.c
+++ b/hw/net/etraxfs_eth.c
@@ -630,7 +630,7 @@ static void etraxfs_eth_class_init(ObjectClass *klass, void *data)
     k->init = fs_eth_init;
     dc->props = etraxfs_eth_properties;
     /* Reason: pointer properties "dma_out", "dma_in" */
-    dc->cannot_instantiate_with_device_add_yet = true;
+    dc->user_creatable = false;
 }
 
 static const TypeInfo etraxfs_eth_info = {
diff --git a/hw/net/lance.c b/hw/net/lance.c
index 573d724..92b0c68 100644
--- a/hw/net/lance.c
+++ b/hw/net/lance.c
@@ -165,7 +165,7 @@ static void lance_class_init(ObjectClass *klass, void *data)
     dc->vmsd = &vmstate_lance;
     dc->props = lance_properties;
     /* Reason: pointer property "dma" */
-    dc->cannot_instantiate_with_device_add_yet = true;
+    dc->user_creatable = false;
 }
 
 static const TypeInfo lance_info = {