The patch ASoC: fsl_sai: Remove expensive print in irq handler 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 e412fcb0db5c44a3450ca678b281ea9332e6bf82 Mon Sep 17 00:00:00 2001 From: Shengjiu Wang <shengjiu.wang@nxp.com> Date: Fri, 18 Jan 2019 14:26:46 +0000 Subject: [PATCH] ASoC: fsl_sai: Remove expensive print in irq handler

When stopping audio, ASoC will first stop DMA then CPU DAI. Sometimes there is a delay between DMA stop and CPU DAI stop, which triggers an underrun error. Now, because of the delay introduced by dev_err another underrun error will occur causing a vicious circle making impossible to stop CPU DAI. Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com> Signed-off-by: Daniel Baluta <daniel.baluta@nxp.com> Signed-off-by: Mark Brown <broonie@kernel.org> --- sound/soc/fsl/fsl_sai.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/sound/soc/fsl/fsl_sai.c b/sound/soc/fsl/fsl_sai.c index 4163f2cfc06f..db9e0872f73d 100644 --- a/sound/soc/fsl/fsl_sai.c +++ b/sound/soc/fsl/fsl_sai.c @@ -62,10 +62,10 @@ static irqreturn_t fsl_sai_isr(int irq, void *devid) dev_dbg(dev, "isr: Start of Tx word detected\n"); if (flags & FSL_SAI_CSR_SEF) - dev_warn(dev, "isr: Tx Frame sync error detected\n"); + dev_dbg(dev, "isr: Tx Frame sync error detected\n"); if (flags & FSL_SAI_CSR_FEF) { - dev_warn(dev, "isr: Transmit underrun detected\n"); + dev_dbg(dev, "isr: Transmit underrun detected\n"); /* FIFO reset for safety */ xcsr |= FSL_SAI_CSR_FR; } @@ -96,10 +96,10 @@ static irqreturn_t fsl_sai_isr(int irq, void *devid) dev_dbg(dev, "isr: Start of Rx word detected\n"); if (flags & FSL_SAI_CSR_SEF) - dev_warn(dev, "isr: Rx Frame sync error detected\n"); + dev_dbg(dev, "isr: Rx Frame sync error detected\n"); if (flags & FSL_SAI_CSR_FEF) { - dev_warn(dev, "isr: Receive overflow detected\n"); + dev_dbg(dev, "isr: Receive overflow detected\n"); /* FIFO reset for safety */ xcsr |= FSL_SAI_CSR_FR; } -- 2.20.1