linux-kernel - Re: [PATCH 1/2] rtc: mt2712: fix build without PM

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Date:   Tue, 17 Mar 2020 14:14:45 +0100
From:   Alexandre Belloni <alexandre.belloni@...tlin.com>
To:     Geert Uytterhoeven <geert@...ux-m68k.org>
Cc:     Eddie Huang <eddie.huang@...iatek.com>,
        Sean Wang <sean.wang@...iatek.com>,
        Alessandro Zummo <a.zummo@...ertech.it>,
        linux-rtc@...r.kernel.org, linux-mediatek@...ts.infradead.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH 1/2] rtc: mt2712: fix build without PM_SLEEP

On 17/03/2020 13:30:10+0100, Geert Uytterhoeven wrote:
> >  static SIMPLE_DEV_PM_OPS(mt2712_pm_ops, mt2712_rtc_suspend,
> >                          mt2712_rtc_resume);
> 
> That's 23 more unused pointers in your kernel image.
> 

This is true but, of the about 900 drivers setting pm callbacks, there
are only 39 doing that conditionally depending on CONFIG_PM or
CONFIG_PM_SLEEP. Interestingly, 9 of them are mediatek related.


-- 
Alexandre Belloni, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com