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dmaengine: hsu: don't check direction of timeouted channel

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The timeout capability is only available on the so called DMA write channels,
i.e. associated with UART Rx FIFO. It means we don't need to check the
direction of the channel to handle timeouts.

Signed-off-by: Andy Shevchenko <[email protected]>
Signed-off-by: Vinod Koul <[email protected]>
This commit is contained in:
Andy Shevchenko 2016-03-18 14:26:35 +02:00 • committed by Vinod Koul
commit c36a0176ba
1 changed files with 1 additions and 1 deletions
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2
drivers/dma/hsu/hsu.c
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@ -160,7 +160,7 @@ irqreturn_t hsu_dma_irq(struct hsu_dma_chip *chip, unsigned short nr)
return IRQ_NONE;
/* Timeout IRQ, need wait some time, see Errata 2 */
if (hsuc->direction == DMA_DEV_TO_MEM && (sr & HSU_CH_SR_DESCTO_ANY))
if (sr & HSU_CH_SR_DESCTO_ANY)
udelay(2);
sr &= ~HSU_CH_SR_DESCTO_ANY;