Re: [PATCH v2 4/6] kvm: Extend irqfd to support level interrupts

[Michael S. Tsirkin]

On Tue, Jun 26, 2012 at 11:09:46PM -0600, Alex Williamson wrote:
> @@ -71,6 +130,14 @@ irqfd_inject(struct work_struct *work)
>  	kvm_set_irq(kvm, KVM_USERSPACE_IRQ_SOURCE_ID, irqfd->gsi, 0);
>  }
>  
> +static void
> +irqfd_inject_level(struct work_struct *work)
> +{
> +	struct _irqfd *irqfd = container_of(work, struct _irqfd, inject);
> +
> +	kvm_set_irq(irqfd->kvm, irqfd->source->id, irqfd->gsi, 1);
> +}
> +
>  /*
>   * Race-free decouple logic (ordering is critical)
>   */


Why is it safe to ignore return value here?
needs a comment.
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