Re: [PATCH v9] iopoll: Introduce memory-mapped IO polling macros

[Mitchel Humpherys]

On Mon, Dec 15 2014 at 03:31:20 PM, Mitchel Humpherys <mitchelh@xxxxxxxxxxxxxx> wrote:
> From: Matt Wagantall <mattw@xxxxxxxxxxxxxx>
>
> It is sometimes necessary to poll a memory-mapped register until its value
> satisfies some condition. Introduce a family of convenience macros that do
> this. Tight-looping, sleeping, and timing out can all be accomplished using
> these macros.
>
> Cc: Thierry Reding <thierry.reding@xxxxxxxxx>
> Cc: Will Deacon <will.deacon@xxxxxxx>
> Cc: Arnd Bergmann <arnd@xxxxxxxx>
> Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
> Cc: Robert Elliott <elliott@xxxxxx>
> Signed-off-by: Matt Wagantall <mattw@xxxxxxxxxxxxxx>
> Signed-off-by: Mitchel Humpherys <mitchelh@xxxxxxxxxxxxxx>
> ---
> v8..v9:
>   - Added note in comments about max sleep time (Rob Elliott)

Sorry, just noticed that I somehow dropped these additional comments
that Rob requested...  Let me send a v10 that actually includes them.
Please ignore this version.


-Mitch

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