Re: [PATCH] dma: tegra: implement flags parameters for cyclic transfer

From: Stephen Warren
Date: Wed Dec 19 2012 - 12:02:49 EST

On 12/19/2012 06:40 AM, Laxman Dewangan wrote:
> The flag parameter is added in the cyclic transfer request.
> Use the flag option of:
> - DMA_PREP_INTERRUPT for enabling interrupt.
> - DMA_CTRL_ACK for deciding whether ack is requred or not for
> descriptor.

Do the relevant drivers that use Tegra's DMA engine already set flags
correctly, so that this change won't cause any regressions?

Why would you not want to enable interrupts; how does a client know when
to refill the buffer?

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at
Please read the FAQ at