From: slash.tmp@free•fr (Mason)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH v3] thermal: tango: add resume support
Date: Wed, 24 Aug 2016 17:12:22 +0200 [thread overview]
Message-ID: <57BDB956.8020709@free.fr> (raw)
In-Reply-To: <2198269.vtL6N6bMEV@wuerfel>
On 24/08/2016 10:32, Arnd Bergmann wrote:
> I think the ideal is to have only one set of conditionals in each
> driver, so at least you don't get a mismatch between them.
>
> SIMPLE_DEV_PM_OPS uses conditional evaluation (but does not
> show the reference to the compiler). Annotating the functions as
> __maybe_unused lets the compiler decide for itself if they should
> be dropped or not, which means we use only the conditional inside
> of SIMPLE_DEV_PM_OPS.
>
> Ideally, SIMPLE_DEV_PM_OPS itself should have used an IS_ENABLED()
> check instead of the #ifdef, that would have made it possible to
> just leave the function always defined with no __maybe_unused, but
> still have it dropped from the object code without a warning
> when there is no runtime reference.
I'm not sure my trivial issue deserves this much discussion. I just
want the patch to be upstream in some form.
I'll submit one more patch, with SIMPLE_DEV_PM_OPS used unconditionally,
and annotate the resume function with __maybe_unused.
This will waste the space of the struct on systems where S3 is disabled,
but it seems to be the preferred solution, IIUC.
Regards.
next prev parent reply other threads:[~2016-08-24 15:12 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-28 11:37 [RESEND PATCH v2] thermal: tango: add resume support Mason
2016-07-18 9:33 ` Thierry Reding
2016-07-18 10:09 ` Arnd Bergmann
2016-07-18 10:13 ` Thierry Reding
2016-07-18 11:10 ` Arnd Bergmann
2016-07-18 11:28 ` Thierry Reding
2016-07-18 12:21 ` [PATCH v3] " Mason
2016-07-20 10:50 ` Thierry Reding
2016-07-22 22:00 ` Kevin Hilman
2016-07-25 8:18 ` Mason
2016-07-25 8:52 ` Arnd Bergmann
2016-07-25 9:48 ` Mason
2016-07-26 12:13 ` Arnd Bergmann
2016-08-19 11:29 ` Zhang Rui
2016-08-22 21:00 ` Arnd Bergmann
2016-08-24 8:25 ` Zhang Rui
2016-08-24 8:32 ` Arnd Bergmann
2016-08-24 15:12 ` Mason [this message]
2016-09-02 13:17 ` [PATCH v4] " Marc Gonzalez
2016-09-02 20:54 ` Kevin Hilman
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