blockdev: Drop unused drive_get_next()

drive_get_next() is basically a bad idea.  It returns the "next" block
backend of a certain interface type.  "Next" means bus=0,unit=N, where
subsequent calls count N up from zero, per interface type.

This lets you define unit numbers implicitly by execution order.  If the
order changes, or new calls appear "in the middle", unit numbers change.
ABI break.  Hard to spot in review.

The previous commits eliminated all uses.  Drop the function.

Cc: Kevin Wolf <kwolf@redhat.com>
Cc: Hanna Reitz <hreitz@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20211117163409.3587705-14-armbru@redhat.com>
Reviewed-by: Hanna Reitz <hreitz@redhat.com>

diff --git a/blockdev.c b/blockdev.c
index b35072644eba92fa1291d1c270afcfd52240030e..0eb2823b1b5ab692039fa8be06c524fae111fb81 100644 (file)
--- a/blockdev.c
+++ b/blockdev.c
@@ -303,16 +303,6 @@ int drive_get_max_bus(BlockInterfaceType type)
     return max_bus;
 }
 
-/* Get a block device.  This should only be used for single-drive devices
-   (e.g. SD/Floppy/MTD).  Multi-disk devices (scsi/ide) should use the
-   appropriate bus.  */
-DriveInfo *drive_get_next(BlockInterfaceType type)
-{
-    static int next_block_unit[IF_COUNT];
-
-    return drive_get(type, 0, next_block_unit[type]++);
-}
-
 static void bdrv_format_print(void *opaque, const char *name)
 {
     qemu_printf(" %s", name);

diff --git a/include/sysemu/blockdev.h b/include/sysemu/blockdev.h
index 32c2d6023c6441eb5b7c3065b3c980914c0cafab..a750f99b79f04c64ae05917739badc9387a9f03a 100644 (file)
--- a/include/sysemu/blockdev.h
+++ b/include/sysemu/blockdev.h
@@ -50,7 +50,6 @@ void drive_check_orphaned(void);
 DriveInfo *drive_get_by_index(BlockInterfaceType type, int index);
 int drive_get_max_bus(BlockInterfaceType type);
 int drive_get_max_devs(BlockInterfaceType type);
-DriveInfo *drive_get_next(BlockInterfaceType type);
 
 QemuOpts *drive_def(const char *optstr);
 QemuOpts *drive_add(BlockInterfaceType type, int index, const char *file,