Commit c36a0176 authored Mar 18, 2016 by Andy Shevchenko Committed by Vinod Koul Apr 04, 2016

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

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 <andriy.shevchenko@linux.intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

parent 2d4d689f

drivers/dma/hsu/hsu.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -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;