[RFC PATCH 06/23] ALSA: pci/echoaudio: remove 'set but not used' warning

[Pierre-Louis Bossart]

Fix W=1 warning. One variable is only used in a conditionally-compiled
block, mark as __maybe_unused

sound/pci/echoaudio/echoaudio.c: In function ‘snd_echo_probe’:
sound/pci/echoaudio/echoaudio.c:1958:6: warning: variable ‘i’ set but
not used [-Wunused-but-set-variable]
 1958 |  int i, err;
      |      ^

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart at linux.intel.com>
---
 sound/pci/echoaudio/echoaudio.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/sound/pci/echoaudio/echoaudio.c b/sound/pci/echoaudio/echoaudio.c
index 0941a7a17623..bee3271e29da 100644
--- a/sound/pci/echoaudio/echoaudio.c
+++ b/sound/pci/echoaudio/echoaudio.c
@@ -1955,7 +1955,8 @@ static int snd_echo_probe(struct pci_dev *pci,
 	struct snd_card *card;
 	struct echoaudio *chip;
 	char *dsp;
-	int i, err;
+	__maybe_unused int i;
+	int err;
 
 	if (dev >= SNDRV_CARDS)
 		return -ENODEV;
-- 
2.25.1