Re: [PATCH] dma: rcar-dmac: use list_add() on rcar_dmac_desc_put()
From: Vinod Koul
Date: Thu May 26 2016 - 11:27:56 EST
On Tue, May 24, 2016 at 12:50:28PM +0300, Laurent Pinchart wrote:
> On Saturday 14 May 2016 13:27:31 Vinod Koul wrote:
> > On Fri, Apr 22, 2016 at 01:50:04AM +0000, Kuninori Morimoto wrote:
> > > From: Kuninori Morimoto <kuninori.morimoto.gx@xxxxxxxxxxx>
> > >
> > > Current rcar_dmac_desc_put() is using list_add_tail() in order to
> > > push used descriptor to list of free descriptors, and next DMA transfer
> > > try to reuse it from this list. But because it is using *_tail(),
> > > this reuse effect can't be obtained without using all of them.
> > > For a longer-term solution, we should allocate hardware descriptors
> > > using GFP_KERNEL instead of GFP_NOWAIT, but it is difficult today.
> > > This patch uses list_add() instead of list_add_tail() for short-term
> > > solution.
> > Applied, thanks
> Thanks, but where did you apply it to ? I can't find it in your tree.
I changed my mind after this and felt that we should document above
in the changelog as well and replied to Kuninori few moments after this 
Sorry if that wasn't clear that am not applying this.
Please resend it with update changelog