[PATCH v4 05/11] block-coroutine-wrapper.py: default to main loop aiocontext if function does not have a BlockDriverState parameter

[Emanuele Giuseppe Esposito]

Basically BdrvPollCo->bs is only used by bdrv_poll_co(), and the
functions that it uses are both using bdrv_get_aio_context, that
defaults to qemu_get_aio_context() if bs is NULL.

Therefore pass NULL to BdrvPollCo to automatically generate a function
that create and runs a coroutine in the main loop.

Signed-off-by: Emanuele Giuseppe Esposito <eespo...@redhat.com>
---
 scripts/block-coroutine-wrapper.py | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/scripts/block-coroutine-wrapper.py 
b/scripts/block-coroutine-wrapper.py
index f88ef53964..0f842386d4 100644
--- a/scripts/block-coroutine-wrapper.py
+++ b/scripts/block-coroutine-wrapper.py
@@ -152,8 +152,6 @@ def create_coroutine_only(func: FuncDecl) -> str:
 def gen_wrapper(func: FuncDecl) -> str:
     assert not '_co_' in func.name
     assert func.return_type == 'int'
-    assert func.args[0].type in ['BlockDriverState *', 'BdrvChild *',
-                                 'BlockBackend *']
 
     subsystem, subname = func.name.split('_', 1)
 
@@ -165,8 +163,10 @@ def gen_wrapper(func: FuncDecl) -> str:
         bs = 'bs'
     elif t == 'BdrvChild *':
         bs = 'child->bs'
-    else:
+    elif t == 'BlockBackend *':
         bs = 'blk_bs(blk)'
+    else:
+        bs = 'NULL'
     func.bs = bs
     func.struct_name = snake_to_camel(func.name)
     struct_name = func.struct_name
-- 
2.31.1