linux-kernel - Re: [PATCH] ALSA: hda/tegra: avoid build error without CONFIG

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Message-ID: <20190305122052.GG26369@ulmo>
Date:   Tue, 5 Mar 2019 13:20:52 +0100
From:   Thierry Reding <thierry.reding@...il.com>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        Sameer Pujar <spujar@...dia.com>,
        Mohan Kumar D <mkumard@...dia.com>,
        Ravindra Lokhande <rlokhande@...dia.com>,
        Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>,
        alsa-devel@...a-project.org, linux-tegra@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ALSA: hda/tegra: avoid build error without CONFIG_PM

On Mon, Mar 04, 2019 at 09:33:25PM +0100, Arnd Bergmann wrote:
> The #ifdef protection around the PM functions is wrong, leading to
> a failed reference in some configurations:
> 
> sound/pci/hda/hda_tegra.c: In function 'hda_tegra_runtime_suspend':
> sound/pci/hda/hda_tegra.c:273:2: error: implicit declaration of function 'hda_tegra_disable_clocks'; did you mean 'hda_tegra_enable_clocks'? [-Werror=implicit-function-declaration]
> 
> Better remove the #ifdefs entirely and rely on the compiler silently
> dropping unused functions marked __maybe_unused.
> 
> Fixes: 707e0759f2f4 ("ALSA: hda/tegra: implement runtime suspend/resume")
> Signed-off-by: Arnd Bergmann <arnd@...db.de>
> ---
>  sound/pci/hda/hda_tegra.c | 12 ++++--------
>  1 file changed, 4 insertions(+), 8 deletions(-)

Acked-by: Thierry Reding <treding@...dia.com>

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