Re: [PATCH v4 6/8] DMA: Freescale: change descriptor release process for supporting async_tx

2014-05-08 Thread Hongbo Zhang
On 05/03/2014 12:50 AM, Vinod Koul wrote: On Fri, Apr 18, 2014 at 04:17:49PM +0800, hongbo.zh...@freescale.com wrote: This need review from Dan ... Dan, could you please have a look at this? thanks. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a

Re: [PATCH v4 6/8] DMA: Freescale: change descriptor release process for supporting async_tx

2014-05-02 Thread Vinod Koul
On Fri, Apr 18, 2014 at 04:17:49PM +0800, hongbo.zh...@freescale.com wrote: This need review from Dan ... -- ~Vinod > From: Hongbo Zhang > > Fix the potential risk when enable config NET_DMA and ASYNC_TX. Async_tx is > lack of support in current release process of dma descriptor, all descripto

[PATCH v4 6/8] DMA: Freescale: change descriptor release process for supporting async_tx

2014-04-18 Thread hongbo.zhang
From: Hongbo Zhang Fix the potential risk when enable config NET_DMA and ASYNC_TX. Async_tx is lack of support in current release process of dma descriptor, all descriptors will be released whatever is acked or no-acked by async_tx, so there is a potential race condition when dma engine is uesd b