blockdev: Drop deprecated bogus -drive interface type

Drop the crap deprecated in commit a1b40bd "blockdev: Deprecate
-drive with bogus interface type" (v5.1.0).

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Message-id: 20210309161214.1402527-5-armbru@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>

blockdev.c

@@ -239,19 +239,10 @@ DriveInfo *drive_get(BlockInterfaceType type, int bus, int unit)
     return NULL;
 }
 
-void drive_mark_claimed_by_board(void)
-{
-    BlockBackend *blk;
-    DriveInfo *dinfo;
-
-    for (blk = blk_next(NULL); blk; blk = blk_next(blk)) {
-        dinfo = blk_legacy_dinfo(blk);
-        if (dinfo && blk_get_attached_dev(blk)) {
-            dinfo->claimed_by_board = true;
-        }
-    }
-}
-
+/*
+ * Check board claimed all -drive that are meant to be claimed.
+ * Fatal error if any remain unclaimed.
+ */
 void drive_check_orphaned(void)
 {
     BlockBackend *blk;
@@ -261,7 +252,17 @@ void drive_check_orphaned(void)
 
     for (blk = blk_next(NULL); blk; blk = blk_next(blk)) {
         dinfo = blk_legacy_dinfo(blk);
-        if (dinfo->is_default || dinfo->type == IF_NONE) {
+        /*
+         * Ignore default drives, because we create certain default
+         * drives unconditionally, then leave them unclaimed.  Not the
+         * users fault.
+         * Ignore IF_VIRTIO, because it gets desugared into -device,
+         * so we can leave failing to -device.
+         * Ignore IF_NONE, because leaving unclaimed IF_NONE remains
+         * available for device_add is a feature.
+         */
+        if (dinfo->is_default || dinfo->type == IF_VIRTIO
+            || dinfo->type == IF_NONE) {
             continue;
         }
         if (!blk_get_attached_dev(blk)) {
@@ -272,14 +273,6 @@ void drive_check_orphaned(void)
                          if_name[dinfo->type], dinfo->bus, dinfo->unit);
             loc_pop(&loc);
             orphans = true;
-            continue;
-        }
-        if (!dinfo->claimed_by_board && dinfo->type != IF_VIRTIO) {
-            loc_push_none(&loc);
-            qemu_opts_loc_restore(dinfo->opts);
-            warn_report("bogus if=%s is deprecated, use if=none",
-                        if_name[dinfo->type]);
-            loc_pop(&loc);
         }
     }
 

docs/system/deprecated.rst

@@ -71,13 +71,6 @@ QEMU 5.1 has three options:
       to the user to load all the images they need.
  3. ``-bios <file>`` - Tells QEMU to load the specified file as the firmwrae.
 
-``-drive`` with bogus interface type (since 5.1)
-''''''''''''''''''''''''''''''''''''''''''''''''
-
-Drives with interface types other than ``if=none`` are for onboard
-devices.  It is possible to use drives the board doesn't pick up with
--device.  This usage is now deprecated.  Use ``if=none`` instead.
-
 Short-form boolean options (since 6.0)
 ''''''''''''''''''''''''''''''''''''''
 

docs/system/removed-features.rst

@@ -113,6 +113,13 @@ becomes
     -device isa-fdc,...
     -device floppy,unit=1,drive=...
 
+``-drive`` with bogus interface type (removed in 6.0)
+'''''''''''''''''''''''''''''''''''''''''''''''''''''
+
+Drives with interface types other than ``if=none`` are for onboard
+devices.  Drives the board doesn't pick up can no longer be used with
+-device.  Use ``if=none`` instead.
+
 
 QEMU Machine Protocol (QMP) commands
 ------------------------------------

include/sysemu/blockdev.h

@@ -35,7 +35,6 @@ struct DriveInfo {
     bool is_default;            /* Added by default_drive() ?  */
     int media_cd;
     QemuOpts *opts;
-    bool claimed_by_board;
     QTAILQ_ENTRY(DriveInfo) next;
 };
 

softmmu/vl.c

@@ -2511,13 +2511,7 @@ static void qemu_init_board(void)
     /* From here on we enter MACHINE_PHASE_INITIALIZED.  */
     machine_run_board_init(current_machine);
 
-    /*
-     * TODO To drop support for deprecated bogus if=..., move
-     * drive_check_orphaned() here, replacing this call.  Also drop
-     * its deprecation warning, along with DriveInfo member
-     * @claimed_by_board.
-     */
-    drive_mark_claimed_by_board();
+    drive_check_orphaned();
 
     realtime_init();