[alsa-devel] [RFC PATCH 06/11] dma: amba-pl08x: Keep LLIs aligned to 4-word boundary

[Russell King - ARM Linux]

On Mon, Jun 17, 2013 at 03:51:20PM +0200, Linus Walleij wrote:
> On Sun, Jun 16, 2013 at 10:54 PM, Tomasz Figa <tomasz.figa at gmail.com> wrote:
> > diff --git a/drivers/dma/amba-pl08x.c b/drivers/dma/amba-pl08x.c
> > index eb10eb8..0da5539 100644
> > --- a/drivers/dma/amba-pl08x.c
> > +++ b/drivers/dma/amba-pl08x.c
> > @@ -127,6 +127,7 @@ struct pl08x_lli {
> >         u32 lli;
> >         u32 cctl;
> >         u32 cctl1;
> > +       u32 dummy[3];
> 
> Atleast put a comment into the code explaining what this is all
> about. Or someone will add another member to the struct and
> all is lost. Call it "padding" rather than dummy.

Another solution to that is to use __attribute__((__aligned__(16)))
if you want it aligned to 16 byte boundaries.