Re: [PATCH v3 06/10] ASoC: sti: uniperif: fix 'defined by not used' warning

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On 7/8/20 4:11 AM, Arnaud POULIQUEN wrote:
Hi Pierre-Louis,

On 7/7/20 9:16 PM, Pierre-Louis Bossart wrote:
Fix W=1 warning. The table uni_tdm_hw is declared in a header included
by multiple C file. This isn't really a good practice but for now
using __maybe_unused makes the following warning go away.

sound/soc/sti/sti_uniperif.c:12:
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 = {
       |                                      ^~~~~~~~~~

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@xxxxxxxxxxxxxxx>

Thanks for the patch,
Seems that the same patch has already been proposed by Lee:
https://www.spinics.net/lists/arm-kernel/msg820327.html

that's right, we both fixed the same things, and this is the merged series.
Do you mind providing a tag if you're ok with the change?

Regards,
Arnaud

---
  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 2dc2da5d458b..a16adeb7c1e9 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 __maybe_unused const struct snd_pcm_hardware 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,




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