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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>
This commit is contained in:
Julia Lawall 2009-08-09 11:42:32 +02:00 committed by Ralf Baechle
parent 9fe6206f40
commit 26692f53ef
1 changed files with 2 additions and 2 deletions
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4
drivers/video/tdfxfb.c
View File

@ -1571,8 +1571,8 @@ static int __devinit tdfxfb_probe(struct pci_dev *pdev,
if (default_par->mtrr_handle >= 0)
mtrr_del(default_par->mtrr_handle, info->fix.smem_start,
info->fix.smem_len);
release_mem_region(pci_resource_start(pdev, 2),
pci_resource_len(pdev, 2));
release_region(pci_resource_start(pdev, 2),
pci_resource_len(pdev, 2));
out_err_screenbase:
if (info->screen_base)
iounmap(info->screen_base);