[PATCH v2.6.34-rc2] s3c: Fix CONFIG_MTD_NAND_S3C2410_CLKSTOP

[christian pellegrin]

On Tue, May 4, 2010 at 8:57 AM, Ben Dooks <ben-linux at fluff.org> wrote:
>
> please let me know why you feel the need to use test_and_set_bit on
> a variable that is single use.
>

As I mentioned in the description the select function is not called in
a balanced way by upper layers, so there is a need to count it in the
driver (otherwise you end by calling clk_disable too many times if I
remember well). Perhaps the atomic operations are not needed but I'm
not sure about this so I preferred to take the cautionary approach (I
haven't studied if calls to select are serialized in the upper MTD
layer or even the block layer). Feel free to use a simple integer, but
I confirm that something like this patch is needed in 2.6.33 and
2.6.34 if you want clock stopping enabled.

Thanks,

-- 
Christian Pellegrin, see http://www.evolware.org/chri/
"Real Programmers don't play tennis, or any other sport which requires
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