staging: rtl8188eu: Use list iterators and helpers

The rtl8188eu manually re-implements list helper functions
and macros in various ways. Replace with existing list helpers.

The following coccinelle script was used to convert the code.

@@
identifier v1, v2, v3, v4;
symbol next;
expression e;
iterator name list_for_each;
statement S;
@@

<+...
(
- e = v1->next;
|
- e = get_next(v1);
)
  ... when != e
- while ( \( v1 != e \| e != v1 \) )
+ list_for_each (e, v1)
  {
    ...
-   v2 = container_of(e, struct v3, v4);
+   v2 = list_entry(e, struct v3, v4);
?-  if (!v2) S
    ...
(
-   e = e->next;
|
- e = get_next(e);
)
    ... when != e
  }
...+>

@@
identifier v1, v2, v3, v4;
symbol next;
expression e;
iterator name list_for_each;
statement S;
@@

<+...
(
- e = v1->next;
|
- e = get_next(v1);
)
  ... when != e
- while (1)
+ list_for_each (e, v1)
  {
- if ( \( e == v1 \| v1 == e \) )
-   break;
    ...
-   v2 = container_of(e, struct v3, v4);
+   v2 = list_entry(e, struct v3, v4);
?-  if (!v2) S
    ...
(
-   e = e->next;
|
- e = get_next(e);
)
    ... when != e
  }
...+>

Manually fixed up formatting, and added autoremoved comments back in.
Compile tested only.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20210428163522.129189-1-linux@roeck-us.net


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>