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Re: [PATCH 1/3] staging: vt6656: rxtx.h always pack BEACON_BUFFER/TX_BUFFER

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On Mon, 2013-08-12 at 16:09 -0700, Greg KH wrote:
> On Tue, Aug 13, 2013 at 12:07:15AM +0100, Malcolm Priestley wrote:
> > On Mon, 2013-08-12 at 14:59 -0700, Greg KH wrote:
> > > On Mon, Aug 05, 2013 at 09:04:54PM +0100, Malcolm Priestley wrote:
> > > > All structure members of BEACON_BUFFER/TX_BUFFER should be packed.
> > > 
> > > Why?
> > 
> > Only the first 4 members of these structures are live.
> > 
> > The forth member is referenced at run-time by packed structures.
> > typedef struct tagSTxBufHead
> > typedef struct tagSTxShortBufHead
> > in desc.h
> > 
> > If these structures are not packed the alignment of these members
> > will be wrong.
> 
> Then say all of this in the patch please :)
> 
> > > 
> > > What happens if they are not?
> > The driver does not work.
> 
> How is it working today without this change?
Well for *me* it works.

It appears the structure is packed anyway.

But is this guaranteed?

Anyway, do you want me to resend the patch.


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