discard_granularity was missing from this, which means that SCSI disks
created with -drive if=scsi would default to 0 (i.e. disabling discards)
instead of -1, which makes scsi-hd automatically pick a granularity and
is the default of the corresponding qdev property for -device scsi-hd.

This was broken in QEMU 9.0 with commit 3089637.

Also set other fields whose default isn't an obvious 0. These are not
actual bug fixes because ON_OFF_AUTO_AUTO in fact happens to be 0, but
it's better not to rely on the order of enums.

Cc: qemu-stable@nongnu.org
Fixes: 308963746169 ('scsi: Don't ignore most usb-storage properties')
Reported-by: Lexi Winter <ivy@FreeBSD.org>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
 include/hw/block/block.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/include/hw/block/block.h b/include/hw/block/block.h
index e0a427039ee..df941df19f2 100644
--- a/include/hw/block/block.h
+++ b/include/hw/block/block.h
@@ -53,7 +53,12 @@ static inline unsigned int get_physical_block_exp(BlockConf *conf)
 
 #define DEFAULT_BLOCK_CONF (BlockConf) {                                \
     .bootindex = -1,                                                    \
+    .backend_defaults = ON_OFF_AUTO_AUTO,                               \
+    .discard_granularity = -1,                                          \
+    .wce = ON_OFF_AUTO_AUTO,                                            \
     .share_rw = false,                                                  \
+    .account_invalid = ON_OFF_AUTO_AUTO,                                \
+    .account_failed = ON_OFF_AUTO_AUTO,                                 \
     .rerror = BLOCKDEV_ON_ERROR_AUTO,                                   \
     .werror = BLOCKDEV_ON_ERROR_AUTO,                                   \
 }
-- 
2.53.0