netdev - Re: [PATCH iwl-next v1 2/2] net: intel: implement modern PM ops declarations

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Date: Mon, 19 Feb 2024 09:22:16 +0000
From: Simon Horman <horms@...nel.org>
To: Jesse Brandeburg <jesse.brandeburg@...el.com>
Cc: intel-wired-lan@...ts.osuosl.org, netdev@...r.kernel.org,
	Alan Brady <alan.brady@...el.com>,
	Tony Nguyen <anthony.l.nguyen@...el.com>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>
Subject: Re: [PATCH iwl-next v1 2/2] net: intel: implement modern PM ops
 declarations

On Sat, Feb 10, 2024 at 02:01:09PM -0800, Jesse Brandeburg wrote:
> Switch the Intel networking drivers to use the new power management ops
> declaration formats and macros, which allows us to drop __maybe_unused,
> as well as a bunch of ifdef checking CONFIG_PM.
> 
> This is safe to do because the compiler drops the unused functions,
> verified by checking for any of the power management function symbols
> being present in System.map for a build without CONFIG_PM.
> 
> If a driver has runtime PM, define the ops with pm_ptr(), and if the
> driver has Simple PM, use pm_sleep_ptr(), as well as the new versions of
> the macros for declaring the members of the pm_ops structs.
> 
> Checked with network-enabled allnoconfig, allyesconfig, allmodconfig on
> x64_64.
> 
> Reviewed-by: Alan Brady <alan.brady@...el.com>
> Signed-off-by: Jesse Brandeburg <jesse.brandeburg@...el.com>

Reviewed-by: Simon Horman <horms@...nel.org>