VIDEO: Correct use of request_region/request_mem_region
authorJulia Lawall <julia@diku.dk>
Sun, 9 Aug 2009 09:42:32 +0000 (11:42 +0200)
committerRalf Baechle <ralf@linux-mips.org>
Thu, 5 Aug 2010 12:25:38 +0000 (13:25 +0100)
commit26692f53ef550f7b8dc43fc5171c6187094632a8
tree88ea9abcb60bc389ec940d413a0f34a9f85eb0b1
parent9fe6206f400646a2322096b56c59891d530e8d51
VIDEO: Correct use of request_region/request_mem_region

request_region should be used with release_region, not request_mem_region.

Geert Uytterhoeven pointed out that in the case of drivers/video/gbefb.c,
the problem is actually the other way around; request_mem_region should be
used instead of request_region.

The semantic patch that finds/fixes this problem is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@r1@
expression start;
@@

request_region(start,...)

@b1@
expression r1.start;
@@

request_mem_region(start,...)

@depends on !b1@
expression r1.start;
expression E;
@@

- release_mem_region
+ release_region
  (start,E)
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
drivers/video/tdfxfb.c