[PATCH 3.0] fix compile warnings in plat-iop/cp6.c

[Mikael Pettersson]

Russell King - ARM Linux writes:
 > On Fri, Jul 22, 2011 at 04:28:01PM +0200, Mikael Pettersson wrote:
 > > Sure, that works too.  Revised patch below.  Only tested on n2100 so far.
 > 
 > Do you know when this started to go wrong - do we need to copy it to some
 > stable trees?

2.6.39 doesn't have this problem so backporting shouldn't be necessary.

 > Other than that, looks fine, so -> patch system please.

Done, it's now "7004/1 fix traps.h compile warnings".

Thanks.

 > 
 > Thanks.
 > 
 > > 
 > > Building kernel 3.0 for an n2100 (plat-iop) results in:
 > > 
 > > In file included from arch/arm/plat-iop/cp6.c:20:
 > > /tmp/linux-3.0/arch/arm/include/asm/traps.h:12: warning: 'struct pt_regs' declared inside parameter list
 > > /tmp/linux-3.0/arch/arm/include/asm/traps.h:12: warning: its scope is only this definition or declaration, which is probably not what you want
 > > /tmp/linux-3.0/arch/arm/include/asm/traps.h:48: warning: 'struct pt_regs' declared inside parameter list
 > > /tmp/linux-3.0/arch/arm/include/asm/traps.h:48: warning: 'struct task_struct' declared inside parameter list
 > > arch/arm/plat-iop/cp6.c:45: warning: initialization from incompatible pointer type
 > > 
 > > Nothing here depends on the layout of pt_regs or task_struct, so this
 > > can be fixed by adding forward struct declarations to asm/traps.h.
 > > 
 > > Signed-off-by: Mikael Pettersson <mikpe at it.uu.se>
 > > ---
 > > --- linux-3.0/arch/arm/include/asm/traps.h.~1~	2011-05-19 06:06:34.000000000 +0200
 > > +++ linux-3.0/arch/arm/include/asm/traps.h	2011-07-22 16:14:50.000000000 +0200
 > > @@ -3,6 +3,9 @@
 > >  
 > >  #include <linux/list.h>
 > >  
 > > +struct pt_regs;
 > > +struct task_struct;
 > > +
 > >  struct undef_hook {
 > >  	struct list_head node;
 > >  	u32 instr_mask;
 > > 
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 >