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, 7 deletions

diff --git a/hw/ide/macio.c b/hw/ide/macio.c
index c09d2e0..40f60f0 100644
--- a/hw/ide/macio.c
+++ b/hw/ide/macio.c
@@ -84,13 +84,6 @@ static void pmac_ide_atapi_transfer_cb(void *opaque, int ret)
     m->aiocb = dma_bdrv_read(s->bs, &s->sg,
                              (int64_t)(s->lba << 2) + (s->io_buffer_index >> 9),
                              pmac_ide_atapi_transfer_cb, io);
-    if (!m->aiocb) {
-        qemu_sglist_destroy(&s->sg);
-        /* Note: media not present is the most likely case */
-        ide_atapi_cmd_error(s, NOT_READY,
-                            ASC_MEDIUM_NOT_PRESENT);
-        goto done;
-    }
     return;
 
 done: