linux-kernel - Re: ath10k: fix build errors with !CONFIG

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Date:   Fri, 27 Oct 2017 15:44:46 +0200
From:   Kalle Valo <kvalo@....qualcomm.com>
To:     Brian Norris <briannorris@...omium.org>
CC:     Ryan Hsu <ryanhsu@....qualcomm.com>,
        Grant Grundler <grundler@...omium.org>,
        "linux-wireless@...r.kernel.org" <linux-wireless@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "ath10k@...ts.infradead.org" <ath10k@...ts.infradead.org>,
        Arnd Bergmann <arnd@...db.de>
Subject: Re: ath10k: fix build errors with !CONFIG_PM

Brian Norris <briannorris@...omium.org> wrote:

> Build errors have been reported with CONFIG_PM=n:
> 
> drivers/net/wireless/ath/ath10k/pci.c:3416:8: error: implicit
> declaration of function 'ath10k_pci_suspend'
> [-Werror=implicit-function-declaration]
> 
> drivers/net/wireless/ath/ath10k/pci.c:3428:8: error: implicit
> declaration of function 'ath10k_pci_resume'
> [-Werror=implicit-function-declaration]
> 
> These are caused by the combination of the following two commits:
> 
> 6af1de2e4ec4 ("ath10k: mark PM functions as __maybe_unused")
> 96378bd2c6cd ("ath10k: fix core PCI suspend when WoWLAN is supported but
> disabled")
> 
> Both build fine on their own.
> 
> But now that ath10k_pci_pm_{suspend,resume}() is compiled
> unconditionally, we should also compile ath10k_pci_{suspend,resume}()
> unconditionally.
> 
> And drop the #ifdef around ath10k_pci_hif_{suspend,resume}() too; they
> are trivial (empty), so we're not saving much space by compiling them
> out. And the alternatives would be to sprinkle more __maybe_unused, or
> spread the #ifdef's further.
> 
> Build tested with the following combinations:
> CONFIG_PM=y && CONFIG_PM_SLEEP=y
> CONFIG_PM=y && CONFIG_PM_SLEEP=n
> CONFIG_PM=n
> 
> Fixes: 96378bd2c6cd ("ath10k: fix core PCI suspend when WoWLAN is supported but disabled")
> Fixes: 096ad2a15fd8 ("Merge branch 'ath-next'")
> Signed-off-by: Brian Norris <briannorris@...omium.org>
> Signed-off-by: Kalle Valo <kvalo@....qualcomm.com>

Patch applied to ath-next branch of ath.git, thanks.

20665a9076d4 ath10k: fix build errors with !CONFIG_PM

-- 
https://patchwork.kernel.org/patch/10018169/

https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches