The patch
ASoC: stm32: sai: fix stop management in isr
has been applied to the asoc tree at
git://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 d807cdfb48c4d925b269f5b0f818864766e17389 Mon Sep 17 00:00:00 2001
From: Olivier Moysan olivier.moysan@st.com Date: Thu, 19 Oct 2017 15:03:20 +0200 Subject: [PATCH] ASoC: stm32: sai: fix stop management in isr
Add check on substream validity.
Signed-off-by: Olivier Moysan olivier.moysan@st.com Signed-off-by: Mark Brown broonie@kernel.org --- sound/soc/stm/stm32_sai_sub.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-)
diff --git a/sound/soc/stm/stm32_sai_sub.c b/sound/soc/stm/stm32_sai_sub.c index 90d439613899..5e66bf310351 100644 --- a/sound/soc/stm/stm32_sai_sub.c +++ b/sound/soc/stm/stm32_sai_sub.c @@ -184,7 +184,6 @@ static const struct regmap_config stm32_sai_sub_regmap_config_h7 = { static irqreturn_t stm32_sai_isr(int irq, void *devid) { struct stm32_sai_sub_data *sai = (struct stm32_sai_sub_data *)devid; - struct snd_pcm_substream *substream = sai->substream; struct platform_device *pdev = sai->pdev; unsigned int sr, imr, flags; snd_pcm_state_t status = SNDRV_PCM_STATE_RUNNING; @@ -199,6 +198,11 @@ static irqreturn_t stm32_sai_isr(int irq, void *devid) regmap_update_bits(sai->regmap, STM_SAI_CLRFR_REGX, SAI_XCLRFR_MASK, SAI_XCLRFR_MASK);
+ if (!sai->substream) { + dev_err(&pdev->dev, "Device stopped. Spurious IRQ 0x%x\n", sr); + return IRQ_NONE; + } + if (flags & SAI_XIMR_OVRUDRIE) { dev_err(&pdev->dev, "IRQ %s\n", STM_SAI_IS_PLAYBACK(sai) ? "underrun" : "overrun"); @@ -227,9 +231,9 @@ static irqreturn_t stm32_sai_isr(int irq, void *devid) }
if (status != SNDRV_PCM_STATE_RUNNING) { - snd_pcm_stream_lock(substream); - snd_pcm_stop(substream, SNDRV_PCM_STATE_XRUN); - snd_pcm_stream_unlock(substream); + snd_pcm_stream_lock(sai->substream); + snd_pcm_stop(sai->substream, SNDRV_PCM_STATE_XRUN); + snd_pcm_stream_unlock(sai->substream); }
return IRQ_HANDLED;