Re: [PATCH 02/10] dmaengine: move drivers to dma_transfer_direction

From: Vinod Koul
Date: Thu Oct 27 2011 - 12:59:56 EST


On Mon, 2011-10-17 at 14:52 +0200, Guennadi Liakhovetski wrote:

Sorry for replying late...
> > diff --git a/drivers/dma/shdma.c b/drivers/dma/shdma.c
> > index 81809c2..cab7d3e 100644
> > --- a/drivers/dma/shdma.c
> > +++ b/drivers/dma/shdma.c
> > @@ -23,7 +23,6 @@
> > #include <linux/interrupt.h>
> > #include <linux/dmaengine.h>
> > #include <linux/delay.h>
> > -#include <linux/dma-mapping.h>
> > #include <linux/platform_device.h>
> > #include <linux/pm_runtime.h>
> > #include <linux/sh_dma.h>
> > @@ -479,19 +478,19 @@ static void sh_dmae_free_chan_resources(struct
> dma_chan *chan)
> > * @sh_chan: DMA channel
> > * @flags: DMA transfer flags
> > * @dest: destination DMA address, incremented when direction
> equals
> > - * DMA_FROM_DEVICE or DMA_BIDIRECTIONAL
> > + * DEV_TO_MEM
> > * @src: source DMA address, incremented when direction equals
> > - * DMA_TO_DEVICE or DMA_BIDIRECTIONAL
> > + * MEM_TO_DEV
>
> Why have you changed the above two comments? Doesn't seem correct to
> me.
No this is the right comment.

After the direction flag changes, the sh_dmae_add_desc will take new
flags for direction. The valid flags would be DEV_TO_MEM and
DEV_TO_DEVICE only.

--
~Vinod

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