linux-kernel - [PATCH 01/17] ASoC: amd: renoir: acp3x-pdm-dma: remove unnecessary assignments

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Message-Id: <20210326215927.936377-2-pierre-louis.bossart@linux.intel.com>
Date:   Fri, 26 Mar 2021 16:59:11 -0500
From:   Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
To:     alsa-devel@...a-project.org
Cc:     tiwai@...e.de, broonie@...nel.org, linux-kernel@...r.kernel.org,
        Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>,
        Liam Girdwood <lgirdwood@...il.com>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        Vijendar Mukunda <Vijendar.Mukunda@....com>,
        Hui Wang <hui.wang@...onical.com>
Subject: [PATCH 01/17] ASoC: amd: renoir: acp3x-pdm-dma: remove unnecessary assignments

cppcheck warning:

sound/soc/amd/renoir/acp3x-pdm-dma.c:132:17: style: Variable
'pdm_dma_enable' is assigned a value that is never
used. [unreadVariable]
 pdm_dma_enable = 0x00;
                ^
sound/soc/amd/renoir/acp3x-pdm-dma.c:156:18: style: Variable
'pdm_dma_enable' is assigned a value that is never
used. [unreadVariable]
  pdm_dma_enable = 0x00;
                 ^

indeed those values are never used because the timeout is reset.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
---
 sound/soc/amd/renoir/acp3x-pdm-dma.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/sound/soc/amd/renoir/acp3x-pdm-dma.c b/sound/soc/amd/renoir/acp3x-pdm-dma.c
index 7b14d9a81b97..1acd20439399 100644
--- a/sound/soc/amd/renoir/acp3x-pdm-dma.c
+++ b/sound/soc/amd/renoir/acp3x-pdm-dma.c
@@ -129,7 +129,6 @@ static int start_pdm_dma(void __iomem *acp_base)
 	enable_pdm_clock(acp_base);
 	rn_writel(pdm_enable, acp_base + ACP_WOV_PDM_ENABLE);
 	rn_writel(pdm_dma_enable, acp_base + ACP_WOV_PDM_DMA_ENABLE);
-	pdm_dma_enable = 0x00;
 	timeout = 0;
 	while (++timeout < ACP_COUNTER) {
 		pdm_dma_enable = rn_readl(acp_base + ACP_WOV_PDM_DMA_ENABLE);
@@ -153,7 +152,6 @@ static int stop_pdm_dma(void __iomem *acp_base)
 	if (pdm_dma_enable & 0x01) {
 		pdm_dma_enable = 0x02;
 		rn_writel(pdm_dma_enable, acp_base + ACP_WOV_PDM_DMA_ENABLE);
-		pdm_dma_enable = 0x00;
 		timeout = 0;
 		while (++timeout < ACP_COUNTER) {
 			pdm_dma_enable = rn_readl(acp_base +
-- 
2.25.1