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rbd: avoid Wreturn-type warnings

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In some configurations gcc cannot see that rbd_assert(0) leads to an
unreachable code path:

  drivers/block/rbd.c: In function 'rbd_img_is_write':
  drivers/block/rbd.c:1397:1: error: control reaches end of non-void function [-Werror=return-type]
  drivers/block/rbd.c: In function '__rbd_obj_handle_request':
  drivers/block/rbd.c:2499:1: error: control reaches end of non-void function [-Werror=return-type]
  drivers/block/rbd.c: In function 'rbd_obj_handle_write':
  drivers/block/rbd.c:2471:1: error: control reaches end of non-void function [-Werror=return-type]

As the rbd_assert() here shows has no extra information beyond the verbose
BUG(), we can simply use BUG() directly in its place.  This is reliably
detected as not returning on any architecture, since it doesn't depend
on the unlikely() comparison that confused gcc.

Fixes: 3da691bf43 ("rbd: new request handling code")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
This commit is contained in:
Arnd Bergmann 2018-04-04 14:53:39 +02:00 committed by Ilya Dryomov
parent ffdeec7aa4
commit c6244b3b23
1 changed files with 3 additions and 3 deletions
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6
drivers/block/rbd.c
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@ -1404,7 +1404,7 @@ static bool rbd_img_is_write(struct rbd_img_request *img_req)
case OBJ_OP_DISCARD:
return true;
default:
rbd_assert(0);
BUG();
}
}
@ -2478,7 +2478,7 @@ again:
}
return false;
default:
rbd_assert(0);
BUG();
}
}
@ -2506,7 +2506,7 @@ static bool __rbd_obj_handle_request(struct rbd_obj_request *obj_req)
}
return false;
default:
rbd_assert(0);
BUG();
}
}