[PATCH] powerpc/pseries: Correct MSI allocation tracking

[Nilay Shroff]

On 3/2/26 6:09 AM, Nam Cao wrote:
> The per-device MSI allocation calculation in pseries_irq_domain_alloc()
> is clearly wrong. It can still happen to work when nr_irqs is 1.
> 
> Correct it.
> 
> Fixes: c0215e2d72de ("powerpc/pseries: Fix MSI-X allocation failure when quota is exceeded")
> Cc: stable at vger.kernel.org
> Signed-off-by: Nam Cao <namcao at linutronix.de>
> ---
>   arch/powerpc/platforms/pseries/msi.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/powerpc/platforms/pseries/msi.c b/arch/powerpc/platforms/pseries/msi.c
> index 64ffc6476ad6..8285b9a29fbf 100644
> --- a/arch/powerpc/platforms/pseries/msi.c
> +++ b/arch/powerpc/platforms/pseries/msi.c
> @@ -605,7 +605,7 @@ static int pseries_irq_domain_alloc(struct irq_domain *domain, unsigned int virq
>   					      &pseries_msi_irq_chip, pseries_dev);
>   	}
>   
> -	pseries_dev->msi_used++;
> +	pseries_dev->msi_used += nr_irqs;
>   	return 0;
>   
>   out:

Looks good to me:
Reviewed-by : Nilay Shroff <nilay at linux.ibm.com>