[PATCH v7] introduce macro spin_event_timeout()

[Sean MacLennan]

On Tue,  5 May 2009 16:53:05 -0500
"Timur Tabi" <timur at freescale.com> wrote:

> The macro spin_event_timeout() takes a condition and timeout value
> (in microseconds) as parameters.  It spins until either the condition
> is true or the timeout expires.  It returns the result of the
> condition when the loop was terminated.
> 
> This primary purpose of this macro is to poll on a hardware register
> until a status bit changes.  The timeout ensures that the loop still
> terminates if the bit doesn't change as expected.  This macro makes
> it easier for driver developers to perform this kind of operation
> properly.
> 
> Signed-off-by: Timur Tabi <timur at freescale.com>

Nice. I could have used a routine like this in a couple of our drivers.
So, for what it is worth:

Acked-by: Sean MacLennan <smaclennan at pikatech.com>

Cheers,
   Sean