linux-kernel - re: [PATCH 3/9] ALSA: emu10k1: remove redundant variable attn

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Date:   Wed, 1 Aug 2018 15:03:45 +0200 (CEST)
From:   Walter Harms <wharms@....de>
To:     Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>,
        Jaya Kumar <jayakumar.alsa@...il.com>,
        alsa-devel@...a-project.org
Cc:     kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: re: [PATCH 3/9] ALSA: emu10k1: remove redundant variable attn

From: Colin Ian King <colin.king@...onical.com>

Variable attn is being assigned but is never used hence it is
redundant and can be removed.

Cleans up clang warning:
warning: variable 'attn' set but not used [-Wunused-but-set-variable]

Signed-off-by: Colin Ian King <colin.king@...onical.com>
---
 sound/pci/emu10k1/emupcm.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/sound/pci/emu10k1/emupcm.c b/sound/pci/emu10k1/emupcm.c
index 69f9b100bd24..26f6eda3e766 100644
--- a/sound/pci/emu10k1/emupcm.c
+++ b/sound/pci/emu10k1/emupcm.c
@@ -290,7 +290,7 @@ static void snd_emu10k1_pcm_init_voice(struct snd_emu10k1
*emu,
 	struct snd_pcm_runtime *runtime = substream->runtime;
 	unsigned int silent_page, tmp;
 	int voice, stereo, w_16;
-	unsigned char attn, send_amount[8];
+	unsigned char send_amount[8];
 	unsigned char send_routing[8];
 	unsigned long flags;
 	unsigned int pitch_target;
@@ -313,7 +313,6 @@ static void snd_emu10k1_pcm_init_voice(struct snd_emu10k1
*emu,
  	/* volume parameters */
 	if (extra) {
-		attn = 0;
 		memset(send_routing, 0, sizeof(send_routing));
 		send_routing[0] = 0;
 		send_routing[1] = 1;


IMHO, this code is a bit fishy.
The memset() sould go in the init section
and in the else branch tmp is set, maybe its an idea
to set it here also (for symmetry)
just my 2 cents,

re,
 wh



-- 
2.17.1

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