block: qemu_aio_get does not return NULL

Initially done with the following semantic patch:

@ rule1 @
expression E;
statement S;
@@
  E = qemu_aio_get (...);
(
- if (E == NULL) { ... }
|
- if (E)
    { <... S ...> }
)

which however missed occurrences in linux-aio.c and posix-aio-compat.c.
Those were done by hand.

The change in vdi_aio_setup's caller was also done by hand.

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/block/curl.c b/block/curl.c
index 4209ac88ce..e9102e3e20 100644
--- a/block/curl.c
+++ b/block/curl.c
@@ -509,10 +509,6 @@ static BlockDriverAIOCB *curl_aio_readv(BlockDriverState *bs,
 
     acb = qemu_aio_get(&curl_aio_pool, bs, cb, opaque);
 
-    if (!acb) {
-        return NULL;
-    }
-
     acb->qiov = qiov;
     acb->sector_num = sector_num;
     acb->nb_sectors = nb_sectors;