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

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Message-ID: <vnkw1to0h40z.fsf@mitchelh-linux.qualcomm.com>
Date:	Mon, 15 Dec 2014 15:44:28 -0800
From:	Mitchel Humpherys <mitchelh@...eaurora.org>
To:	linux-kernel@...r.kernel.org
Cc:	linux-arm-kernel@...ts.infradead.org,
	iommu@...ts.linux-foundation.org,
	Thierry Reding <thierry.reding@...il.com>,
	Will Deacon <will.deacon@....com>,
	Arnd Bergmann <arnd@...db.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Robert Elliott <elliott@...com>,
	Matt Wagantall <mattw@...eaurora.org>
Subject: Re: [PATCH v9] iopoll: Introduce memory-mapped IO polling macros

On Mon, Dec 15 2014 at 03:31:20 PM, Mitchel Humpherys <mitchelh@...eaurora.org> wrote:
> From: Matt Wagantall <mattw@...eaurora.org>
>
> 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@...il.com>
> Cc: Will Deacon <will.deacon@....com>
> Cc: Arnd Bergmann <arnd@...db.de>
> Cc: Andrew Morton <akpm@...ux-foundation.org>
> Cc: Robert Elliott <elliott@...com>
> Signed-off-by: Matt Wagantall <mattw@...eaurora.org>
> Signed-off-by: Mitchel Humpherys <mitchelh@...eaurora.org>
> ---
> 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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