[PATCH 6/8 resend] dw_dmac: Mark all tx_descriptors with DMA_CRTL_ACK after xfer finish

Sergei Shtylyov sshtylyov at mvista.com
Mon Feb 28 07:05:24 EST 2011


Hello.

On 28-02-2011 13:41, Viresh Kumar wrote:

> dwc_desc_get checks all descriptors for DMA_CTRL_ACK before allocating them for
> transfers. And descriptors are not marked with DMA_CRTL_ACK after transfer
> finishes. Thus descriptor once used is not usable again. This patch marks
> descriptors with DMA_CRTL_ACK after dma xfer finishes

> Signed-off-by: Viresh Kumar<viresh.kumar at st.com>
> ---
>   drivers/dma/dw_dmac.c |    7 +++++++
>   1 files changed, 7 insertions(+), 0 deletions(-)

> diff --git a/drivers/dma/dw_dmac.c b/drivers/dma/dw_dmac.c
> index c40b89f..01f783d 100644
> --- a/drivers/dma/dw_dmac.c
> +++ b/drivers/dma/dw_dmac.c
> @@ -196,6 +196,7 @@ dwc_descriptor_complete(struct dw_dma_chan *dwc, struct dw_desc *desc)
>   	dma_async_tx_callback		callback;
>   	void				*param;
>   	struct dma_async_tx_descriptor	*txd =&desc->txd;
> +	struct dw_desc	*child;

    Shouldn't this varaible name be aligned with the above variable names?

WBR, Sergei



More information about the linux-arm-kernel mailing list