linux-kernel - [PATCH 20/28] ASoC: sti: uniperif: Mark 'uni_tdm_hw' as __maybe

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Date:   Tue,  7 Jul 2020 11:16:34 +0100
From:   Lee Jones <lee.jones@...aro.org>
To:     broonie@...nel.org, lgirdwood@...il.com, perex@...ex.cz,
        tiwai@...e.com
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        alsa-devel@...a-project.org, Lee Jones <lee.jones@...aro.org>,
        Arnaud Pouliquen <arnaud.pouliquen@...com>
Subject: [PATCH 20/28] ASoC: sti: uniperif: Mark 'uni_tdm_hw' as __maybe_unused

Only 2 of the 3 source files which include this headerfile actually
reference 'uni_tdm_hw'.  The other source file 'sti_uniperif.c' sees
as it as being unused.  Mark it as __maybe_unused to show that this
behaviour is not only known, it's intentional.

Fixes the following W=1 kernel build warning(s):

 sound/soc/sti/uniperif.h:1351:38: warning: ‘uni_tdm_hw’ defined but not used [-Wunused-const-variable=]
 1351 | static const struct snd_pcm_hardware uni_tdm_hw = {
 | ^~~~~~~~~~

Cc: Arnaud Pouliquen <arnaud.pouliquen@...com>
Signed-off-by: Lee Jones <lee.jones@...aro.org>
---
 sound/soc/sti/uniperif.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/soc/sti/uniperif.h b/sound/soc/sti/uniperif.h
index 2dc2da5d458bd..e22d045d5cd99 100644
--- a/sound/soc/sti/uniperif.h
+++ b/sound/soc/sti/uniperif.h
@@ -1348,7 +1348,7 @@ struct sti_uniperiph_data {
 	struct sti_uniperiph_dai dai_data;
 };
 
-static const struct snd_pcm_hardware uni_tdm_hw = {
+static const struct snd_pcm_hardware __maybe_unused uni_tdm_hw = {
 	.info = SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO_BLOCK_TRANSFER |
 		SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_MMAP |
 		SNDRV_PCM_INFO_MMAP_VALID,
-- 
2.25.1