[RESEND] ASoC: fsl_asrc_dma: fully initialize structs

Commit Message

Shengjiu Wang Sept. 23, 2022, 10:15 a.m. UTC

From: Sascha Hauer <[e-mail]>

The driver uses two statically ininitialized struct dma_slave_config,
but only one of them is initialized to zero. Initialize config_be to
zero as well to make sure that no fields are filled with random values.
Let the compiler do this instead of explicitly calling memset() which
makes it easier to read.

Signed-off-by: Sascha Hauer <[e-mail]>
Signed-off-by: Shengjiu Wang <[e-mail]>
---
 sound/soc/fsl/fsl_asrc_dma.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

Comments

Mark Brown Sept. 27, 2022, 10:34 a.m. UTC | #1

On Fri, 23 Sep 2022 18:15:47 +0800, Shengjiu Wang wrote:
> From: Sascha Hauer <[e-mail]>
> 
> The driver uses two statically ininitialized struct dma_slave_config,
> but only one of them is initialized to zero. Initialize config_be to
> zero as well to make sure that no fields are filled with random values.
> Let the compiler do this instead of explicitly calling memset() which
> makes it easier to read.
> 
> [...]

Applied to

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

Thanks!

[1/1] ASoC: fsl_asrc_dma: fully initialize structs
      commit: 1849a1505533501ea39ed0538c2d35eba4704baa

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.

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Thanks,
Mark

Patch

diff --git a/sound/soc/fsl/fsl_asrc_dma.c b/sound/soc/fsl/fsl_asrc_dma.c
index 12ddf2320f2d..3b81a465814a 100644
--- a/sound/soc/fsl/fsl_asrc_dma.c
+++ b/sound/soc/fsl/fsl_asrc_dma.c
@@ -139,7 +139,7 @@  static int fsl_asrc_dma_hw_params(struct snd_soc_component *component,
 	struct dma_chan *tmp_chan = NULL, *be_chan = NULL;
 	struct snd_soc_component *component_be = NULL;
 	struct fsl_asrc *asrc = pair->asrc;
-	struct dma_slave_config config_fe, config_be;
+	struct dma_slave_config config_fe = {}, config_be = {};
 	struct sdma_peripheral_config audio_config;
 	enum asrc_pair_index index = pair->index;
 	struct device *dev = component->dev;
@@ -183,7 +183,6 @@  static int fsl_asrc_dma_hw_params(struct snd_soc_component *component,
 		return -EINVAL;
 	}
 
-	memset(&config_fe, 0, sizeof(config_fe));
 	ret = snd_dmaengine_pcm_prepare_slave_config(substream, params, &config_fe);
 	if (ret) {
 		dev_err(dev, "failed to prepare DMA config for Front-End\n");