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ASoC: fsl_sai: Remove unnecessary FIFO reset in ISR

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The FIFO reset drops the words in the FIFO, which may cause
channel swap when SAI module is running, especially when the
DMA speed is low. So it is not good to do FIFO reset in ISR,
then remove the operation.

Fixes: e2681a1bf5 ("ASoC: fsl_sai: Add isr to deal with error flag")
Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Link: https://lore.kernel.org/r/1660713867-26921-1-git-send-email-shengjiu.wang@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Shengjiu Wang 2022-08-17 13:24:27 +08:00 committed by Mark Brown
parent e6f4bddefd
commit cb225ac125
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 2 additions and 8 deletions
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10
sound/soc/fsl/fsl_sai.c
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@ -114,11 +114,8 @@ static irqreturn_t fsl_sai_isr(int irq, void *devid)
if (flags & FSL_SAI_CSR_SEF)
dev_dbg(dev, "isr: Tx Frame sync error detected\n");
if (flags & FSL_SAI_CSR_FEF) {
if (flags & FSL_SAI_CSR_FEF)
dev_dbg(dev, "isr: Transmit underrun detected\n");
/* FIFO reset for safety */
xcsr |= FSL_SAI_CSR_FR;
}
if (flags & FSL_SAI_CSR_FWF)
dev_dbg(dev, "isr: Enabled transmit FIFO is empty\n");
@ -148,11 +145,8 @@ irq_rx:
if (flags & FSL_SAI_CSR_SEF)
dev_dbg(dev, "isr: Rx Frame sync error detected\n");
if (flags & FSL_SAI_CSR_FEF) {
if (flags & FSL_SAI_CSR_FEF)
dev_dbg(dev, "isr: Receive overflow detected\n");
/* FIFO reset for safety */
xcsr |= FSL_SAI_CSR_FR;
}
if (flags & FSL_SAI_CSR_FWF)
dev_dbg(dev, "isr: Enabled receive FIFO is full\n");