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drivers/dma: Correct use after free 

Move the kfree after the iounmap that refers to the same structure.

A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
@@
expression x,e;
identifier f;
iterator I;
statement S;
@@

*kfree(x);
... when != &x
    when != x = e
    when != I(x,...) S
*x->f
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Julia Lawall 2009-12-22 21:30:59 +01:00 committed by Dan Williams
parent 1e9d1b13ef
commit 0794ec8ce3
1 changed files with 1 additions and 1 deletions
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2
drivers/dma/coh901318.c
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@ -1294,8 +1294,8 @@ static int __exit coh901318_remove(struct platform_device *pdev)
dma_async_device_unregister(&base->dma_slave);
coh901318_pool_destroy(&base->pool);
free_irq(platform_get_irq(pdev, 0), base);
kfree(base);
iounmap(base->virtbase);
kfree(base);
release_mem_region(pdev->resource->start,
resource_size(pdev->resource));
return 0;