Build error: kvm/reset.c

[linux@arm.linux.org.uk (Russell King - ARM Linux)]

On Mon, Aug 19, 2013 at 01:54:42PM -0700, Christoffer Dall wrote:
> On Thu, Aug 15, 2013 at 12:41:50PM +0100, Russell King - ARM Linux wrote:
> > Last night's omap4430-sdp randconfig failed with this error in the KVM code:
> > 
> > arch/arm/kvm/reset.c:43:2: error: unknown field 'irq' specified in initializer
> > 
> > Configs etc at http://www.arm.linux.org.uk/developer/build/
> > 
> > Tree is my tip plus arm-soc tip plus Linus' tip.
> 
> 
> hmmm, I'm wondering if this is actually related to:
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=10676
> 
> Can you tell me which GCC version you are using?

4.5.4.

> I have been unable to reproduce this in any way (unfortunately it seems
> the randconfig generating this error is also not available anymore), but
> this patch may solve the issue:
> 
> diff --git a/arch/arm/kvm/reset.c b/arch/arm/kvm/reset.c
> index b7840e7..71e08ba 100644
> --- a/arch/arm/kvm/reset.c
> +++ b/arch/arm/kvm/reset.c
> @@ -40,7 +40,7 @@ static struct kvm_regs a15_regs_reset = {
>  };
>  
>  static const struct kvm_irq_level a15_vtimer_irq = {
> -	.irq = 27,
> +	{ .irq = 27 },
>  	.level = 1,
>  };

Yes, that appears to fix it with the test I just tried:

struct kvm_irq_level {
        union {
                unsigned irq;
                int status;
        };
        unsigned level;
};

const struct kvm_irq_level a15_vtimer_irq = {
        { .irq = 15, },
        .level = 1,
};

produces:

a15_vtimer_irq:
	.word	15
	.word	1

which is correct.