[PATCH v5 07/22] powerpc/irq: Add stub irq_soft_mask_return() for PPC32

[Nicholas Piggin]

Excerpts from Christophe Leroy's message of February 9, 2021 1:10 am:
> To allow building syscall_64.c smoothly on PPC32, add stub version
> of irq_soft_mask_return().
> 
> Signed-off-by: Christophe Leroy <christophe.leroy at csgroup.eu>

Same kind of comment as the other soft mask stuff. Again not a big deal 
but there might be a way to improve it. For example make a
debug_syscall_entry(regs) function that ppc64 could put the soft mask
checks into.

No big deal, if you don't make any changes now I might see about doing 
something like that after your series goes in.

Reviewed-by: Nicholas Piggin <npiggin at gmail.com>

> ---
>  arch/powerpc/include/asm/hw_irq.h | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/arch/powerpc/include/asm/hw_irq.h b/arch/powerpc/include/asm/hw_irq.h
> index 4739f61e632c..56a98936a6a9 100644
> --- a/arch/powerpc/include/asm/hw_irq.h
> +++ b/arch/powerpc/include/asm/hw_irq.h
> @@ -330,6 +330,11 @@ static inline void irq_soft_mask_regs_set_state(struct pt_regs *regs, unsigned l
>  }
>  #else /* CONFIG_PPC64 */
>  
> +static inline notrace unsigned long irq_soft_mask_return(void)
> +{
> +	return 0;
> +}
> +
>  static inline unsigned long arch_local_save_flags(void)
>  {
>  	return mfmsr();
> -- 
> 2.25.0
> 
>