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dw-dma: clear block/transfer irq after stop 

Clears block/transfer interrupts after stopping the
DMA channel. It prevents sudden interrupt trigger
after enabling different DMA channel than the one
previously stopped.

Signed-off-by: Tomasz Lauda <tomasz.lauda@linux.intel.com>
This commit is contained in:
Tomasz Lauda 2019-04-20 16:21:36 +02:00 committed by Janusz Jankowski
parent 5d49c72e34
commit 433de9fb50
1 changed files with 6 additions and 0 deletions
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6
src/drivers/dw/dma.c
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@ -480,6 +480,9 @@ static int dw_dma_stop(struct dma *dma, int channel)
dw_dma_interrupt_unregister(dma, channel);
#if CONFIG_HW_LLI
/* clear block interrupt */
dw_write(dma, DW_CLEAR_BLOCK, DW_CHAN(channel));
for (i = 0; i < chan->desc_count; i++) {
lli->ctrl_hi &= ~DW_CTLH_DONE(1);
lli++;
@ -487,6 +490,9 @@ static int dw_dma_stop(struct dma *dma, int channel)
dcache_writeback_region(chan->lli,
sizeof(struct dw_lli) * chan->desc_count);
#else
/* clear transfer interrupt */
dw_write(dma, DW_CLEAR_TFR, DW_CHAN(channel));
#endif
chan->status = COMP_STATE_PREPARE;