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ASoC: amd: renoir: Remove redundant assignment to pdm_ctrl and pdm_enable and pdm_dma_enable

Message ID 1620298590-29749-1-git-send-email-jiapeng.chong@linux.alibaba.com (mailing list archive)
State Accepted
Commit 2fa74b31bb8170f34ec4dfa8455ff07d9ee9a7e6
Headers show
Series ASoC: amd: renoir: Remove redundant assignment to pdm_ctrl and pdm_enable and pdm_dma_enable | expand

Commit Message

Jiapeng Chong May 6, 2021, 10:56 a.m. UTC
Variable pdm_ctrl and pdm_enable and pdm_dma_enable are set to '0x00',
but they are overwritten later on, so these are redundant assignments
that can be removed.

Clean up the following clang-analyzer warning:

sound/soc/amd/renoir/acp3x-pdm-dma.c:148:2: warning: Value stored to
'pdm_dma_enable' is never read [clang-analyzer-deadcode.DeadStores].

sound/soc/amd/renoir/acp3x-pdm-dma.c:147:2: warning: Value stored to
'pdm_enable' is never read [clang-analyzer-deadcode.DeadStores].

sound/soc/amd/renoir/acp3x-pdm-dma.c:80:2: warning: Value stored to
'pdm_ctrl' is never read [clang-analyzer-deadcode.DeadStores].

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
---
 sound/soc/amd/renoir/acp3x-pdm-dma.c | 4 ----
 1 file changed, 4 deletions(-)

Comments

Mark Brown May 11, 2021, 8:25 a.m. UTC | #1
On Thu, 6 May 2021 18:56:30 +0800, Jiapeng Chong wrote:
> Variable pdm_ctrl and pdm_enable and pdm_dma_enable are set to '0x00',
> but they are overwritten later on, so these are redundant assignments
> that can be removed.
> 
> Clean up the following clang-analyzer warning:
> 
> sound/soc/amd/renoir/acp3x-pdm-dma.c:148:2: warning: Value stored to
> 'pdm_dma_enable' is never read [clang-analyzer-deadcode.DeadStores].
> 
> [...]

Applied to

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-next

Thanks!

[1/1] ASoC: amd: renoir: Remove redundant assignment to pdm_ctrl and pdm_enable and pdm_dma_enable
      commit: 2fa74b31bb8170f34ec4dfa8455ff07d9ee9a7e6

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark
diff mbox series

Patch

diff --git a/sound/soc/amd/renoir/acp3x-pdm-dma.c b/sound/soc/amd/renoir/acp3x-pdm-dma.c
index 4c2810e..bd20622b 100644
--- a/sound/soc/amd/renoir/acp3x-pdm-dma.c
+++ b/sound/soc/amd/renoir/acp3x-pdm-dma.c
@@ -77,7 +77,6 @@  static void enable_pdm_clock(void __iomem *acp_base)
 	u32 pdm_clk_enable, pdm_ctrl;
 
 	pdm_clk_enable = ACP_PDM_CLK_FREQ_MASK;
-	pdm_ctrl = 0x00;
 
 	rn_writel(pdm_clk_enable, acp_base + ACP_WOV_CLK_CTRL);
 	pdm_ctrl = rn_readl(acp_base + ACP_WOV_MISC_CTRL);
@@ -144,9 +143,6 @@  static int stop_pdm_dma(void __iomem *acp_base)
 	u32 pdm_enable, pdm_dma_enable;
 	int timeout;
 
-	pdm_enable = 0x00;
-	pdm_dma_enable  = 0x00;
-
 	pdm_enable = rn_readl(acp_base + ACP_WOV_PDM_ENABLE);
 	pdm_dma_enable = rn_readl(acp_base + ACP_WOV_PDM_DMA_ENABLE);
 	if (pdm_dma_enable & 0x01) {