[v6,2/4] block: remove unused bdrv_media_changed

Commit Message

Manos Pitsidianakis July 13, 2017, 3:30 p.m. UTC

This function is not used anywhere, so remove it.

Markus Armbruster adds:
The i82078 floppy device model used to call bdrv_media_changed() to
implement its media change bit when backed by a host floppy.  This
went away in 21fcf36 "fdc: simplify media change handling".
Probably broke host floppy media change.  Host floppy pass-through
was dropped in commit f709623.  bdrv_media_changed() has never been
used for anything else.  Remove it.
(Source is Message-ID: <[e-mail]>)

Reviewed-by: Eric Blake <[e-mail]>
Reviewed-by: Stefan Hajnoczi <[e-mail]>
Signed-off-by: Manos Pitsidianakis <[e-mail]>
---
 block.c                   | 14 --------------
 block/raw-format.c        |  6 ------
 include/block/block.h     |  1 -
 include/block/block_int.h |  1 -
 4 files changed, 22 deletions(-)

Patch

diff --git a/block.c b/block.c
index dd409bfb5b..77d0fcade0 100644
--- a/block.c
+++ b/block.c
@@ -4200,20 +4200,6 @@  bool bdrv_is_inserted(BlockDriverState *bs)
 }
 
 /**
- * Return whether the media changed since the last call to this
- * function, or -ENOTSUP if we don't know.  Most drivers don't know.
- */
-int bdrv_media_changed(BlockDriverState *bs)
-{
-    BlockDriver *drv = bs->drv;
-
-    if (drv && drv->bdrv_media_changed) {
-        return drv->bdrv_media_changed(bs);
-    }
-    return -ENOTSUP;
-}
-
-/**
  * If eject_flag is TRUE, eject the media. Otherwise, close the tray
  */
 void bdrv_eject(BlockDriverState *bs, bool eject_flag)
diff --git a/block/raw-format.c b/block/raw-format.c
index 142649ed56..ab552c0954 100644
--- a/block/raw-format.c
+++ b/block/raw-format.c
@@ -372,11 +372,6 @@  static int raw_truncate(BlockDriverState *bs, int64_t offset,
     return bdrv_truncate(bs->file, offset, prealloc, errp);
 }
 
-static int raw_media_changed(BlockDriverState *bs)
-{
-    return bdrv_media_changed(bs->file->bs);
-}
-
 static void raw_eject(BlockDriverState *bs, bool eject_flag)
 {
     bdrv_eject(bs->file->bs, eject_flag);
@@ -510,7 +505,6 @@  BlockDriver bdrv_raw = {
     .bdrv_refresh_limits  = &raw_refresh_limits,
     .bdrv_probe_blocksizes = &raw_probe_blocksizes,
     .bdrv_probe_geometry  = &raw_probe_geometry,
-    .bdrv_media_changed   = &raw_media_changed,
     .bdrv_eject           = &raw_eject,
     .bdrv_lock_medium     = &raw_lock_medium,
     .bdrv_co_ioctl        = &raw_co_ioctl,
diff --git a/include/block/block.h b/include/block/block.h
index b3e2674845..7e0cec5242 100644
--- a/include/block/block.h
+++ b/include/block/block.h
@@ -441,7 +441,6 @@  int bdrv_can_set_read_only(BlockDriverState *bs, bool read_only, Error **errp);
 int bdrv_set_read_only(BlockDriverState *bs, bool read_only, Error **errp);
 bool bdrv_is_sg(BlockDriverState *bs);
 bool bdrv_is_inserted(BlockDriverState *bs);
-int bdrv_media_changed(BlockDriverState *bs);
 void bdrv_lock_medium(BlockDriverState *bs, bool locked);
 void bdrv_eject(BlockDriverState *bs, bool eject_flag);
 const char *bdrv_get_format_name(BlockDriverState *bs);
diff --git a/include/block/block_int.h b/include/block/block_int.h
index 37388ccb18..afdebe7c52 100644
--- a/include/block/block_int.h
+++ b/include/block/block_int.h
@@ -249,7 +249,6 @@  struct BlockDriver {
 
     /* removable device specific */
     bool (*bdrv_is_inserted)(BlockDriverState *bs);
-    int (*bdrv_media_changed)(BlockDriverState *bs);
     void (*bdrv_eject)(BlockDriverState *bs, bool eject_flag);
     void (*bdrv_lock_medium)(BlockDriverState *bs, bool locked);