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

[Russell King - ARM Linux]

On Fri, Jul 22, 2011 at 02:43:47PM +0200, Mikael Pettersson wrote:
> Building 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
> 
> The pt_regs and incompatible pointer type warnings are fixed by including
> <asm/ptrace.h> before <asm/traps.h>.  Nothing here depends on task_struct,
> so that warning can be fixed by a forward struct declaration.

Why not add a forward declaration of struct pt_regs and task_struct
to asm/traps.h ?