On Tue, Jan 8, 2013 at 9:17 AM, Jeff Chua <jeff.chua.li...@gmail.com> wrote:
>
> Interesting, but there are 54 lines under the kernel directories that
> use "dma_alloc_coherent(NULL," followed by "dma_free_coherent(NULL,"
As mentioned, it works on some platforms. That doesn't make it right.
> So, shouldn't they be fixed as well? ... unless they are so old that
> nobody cares anymore ...
Some of the ones I saw are in MIPS or blackfin. Others probably *are*
so old that nobody cares, and happen to work because there's iommu's
or other things that simply don't care about the device.
> # find . -exec grep -H "dma_alloc_coherent(NULL" {} \; | wc -l
> 54
>
> #find . -exec grep -H "dma_free_coherent(NULL" {} \; | wc -l
> 72
Let me tell you about "git grep", so that you never need to do that
disgusting "find -exec grep" ever again.
It does threading, it's fast, and it just works.
Linus
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