From: Fabio Estevam fabio.estevam@nxp.com

Currently the following sparse warnings are observed:

sound/soc/soc-generic-dmaengine-pcm.c:185:34: warning: restricted snd_pcm_format_t degrades to integer sound/soc/soc-generic-dmaengine-pcm.c:186:66: warning: incorrect type in argument 1 (different base types) sound/soc/soc-generic-dmaengine-pcm.c:186:66: expected restricted snd_pcm_format_t [usertype] format sound/soc/soc-generic-dmaengine-pcm.c:186:66: got int [signed] [assigned] i

Fix it by changing the loop variable to be of 'snd_pcm_format_t'.

Also introduce a SNDRV_PCM_FORMAT_FIRST label, which corresponds to the first member (index 0) of the snd_pcm_format_t formats.

Signed-off-by: Fabio Estevam fabio.estevam@nxp.com --- include/uapi/sound/asound.h | 1 + sound/soc/soc-generic-dmaengine-pcm.c | 5 +++-- 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/include/uapi/sound/asound.h b/include/uapi/sound/asound.h index 07d6158..ed0a120 100644 --- a/include/uapi/sound/asound.h +++ b/include/uapi/sound/asound.h @@ -242,6 +242,7 @@ typedef int __bitwise snd_pcm_format_t; #define SNDRV_PCM_FORMAT_DSD_U16_BE ((__force snd_pcm_format_t) 51) /* DSD, 2-byte samples DSD (x16), big endian */ #define SNDRV_PCM_FORMAT_DSD_U32_BE ((__force snd_pcm_format_t) 52) /* DSD, 4-byte samples DSD (x32), big endian */ #define SNDRV_PCM_FORMAT_LAST SNDRV_PCM_FORMAT_DSD_U32_BE +#define SNDRV_PCM_FORMAT_FIRST SNDRV_PCM_FORMAT_S8

#ifdef SNDRV_LITTLE_ENDIAN #define SNDRV_PCM_FORMAT_S16 SNDRV_PCM_FORMAT_S16_LE diff --git a/sound/soc/soc-generic-dmaengine-pcm.c b/sound/soc/soc-generic-dmaengine-pcm.c index 32ea16d..785f25e 100644 --- a/sound/soc/soc-generic-dmaengine-pcm.c +++ b/sound/soc/soc-generic-dmaengine-pcm.c @@ -132,7 +132,8 @@ static int dmaengine_pcm_set_runtime_hwparams(struct snd_pcm_substream *substrea u32 addr_widths = BIT(DMA_SLAVE_BUSWIDTH_1_BYTE) | BIT(DMA_SLAVE_BUSWIDTH_2_BYTES) | BIT(DMA_SLAVE_BUSWIDTH_4_BYTES); - int i, ret; + snd_pcm_format_t i; + int ret;

if (pcm->config && pcm->config->pcm_hardware) return snd_soc_set_runtime_hwparams(substream, @@ -182,7 +183,7 @@ static int dmaengine_pcm_set_runtime_hwparams(struct snd_pcm_substream *substrea * default assumption is that it supports 1, 2 and 4 bytes * widths. */ - for (i = 0; i <= SNDRV_PCM_FORMAT_LAST; i++) { + for (i = SNDRV_PCM_FORMAT_FIRST; i <= SNDRV_PCM_FORMAT_LAST; i++) { int bits = snd_pcm_format_physical_width(i);

/*

The patch

ASoC: soc-generic-dmaengine-pcm: Fix error handling

has been applied to the asoc tree at

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

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

From f91b1e73ccde71d4bc69ae10d475196df38844ab Mon Sep 17 00:00:00 2001

From: Fabio Estevam fabio.estevam@nxp.com Date: Thu, 22 Feb 2018 16:02:21 -0300 Subject: [PATCH] ASoC: soc-generic-dmaengine-pcm: Fix error handling

When dmaengine_pcm_request_chan_of() fails it should release the previously acquired resources, which in this case is to call kfree(pcm), so jump to the correct point in the error path.

Signed-off-by: Fabio Estevam fabio.estevam@nxp.com Signed-off-by: Mark Brown broonie@kernel.org --- sound/soc/soc-generic-dmaengine-pcm.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/sound/soc/soc-generic-dmaengine-pcm.c b/sound/soc/soc-generic-dmaengine-pcm.c index 768247fd92c5..32ea16d062b1 100644 --- a/sound/soc/soc-generic-dmaengine-pcm.c +++ b/sound/soc/soc-generic-dmaengine-pcm.c @@ -450,7 +450,7 @@ int snd_dmaengine_pcm_register(struct device *dev,

ret = dmaengine_pcm_request_chan_of(pcm, dev, config); if (ret) - goto err_free_dma; + goto err_free_pcm;

ret = snd_soc_add_component(dev, &pcm->component, &dmaengine_pcm_component, NULL, 0); @@ -461,6 +461,7 @@ int snd_dmaengine_pcm_register(struct device *dev,

err_free_dma: dmaengine_pcm_release_chan(pcm); +err_free_pcm: kfree(pcm); return ret; }