block: bdrv_aio_* do not return NULL

Initially done with the following semantic patch:

@ rule1 @
expression E;
statement S;
@@
  E =
(
   bdrv_aio_readv
|  bdrv_aio_writev
|  bdrv_aio_flush
|  bdrv_aio_discard
|  bdrv_aio_ioctl
)
     (...);
(
- if (E == NULL) { ... }
|
- if (E)
    { <... S ...> }
)

which however missed the occurrence in block/blkverify.c
(as it should have done), and left behind some unused
variables.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

1 files changed, 0 insertions, 4 deletions

diff --git a/hw/scsi-generic.c b/hw/scsi-generic.c
index e62044f..6f7d3db 100644
--- a/hw/scsi-generic.c
+++ b/hw/scsi-generic.c
@@ -152,10 +152,6 @@ static int execute_command(BlockDriverState *bdrv,
     r->io_header.flags |= SG_FLAG_DIRECT_IO;
 
     r->req.aiocb = bdrv_aio_ioctl(bdrv, SG_IO, &r->io_header, complete, r);
-    if (r->req.aiocb == NULL) {
-        BADF("execute_command: read failed !\n");
-        return -ENOMEM;
-    }
 
     return 0;
 }