Commit 35e4f2a1 authored by Nam Cao's avatar Nam Cao Committed by Madhavan Srinivasan
Browse files

powerpc/pseries: Correct MSI allocation tracking 



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: c0215e2d ("powerpc/pseries: Fix MSI-X allocation failure when quota is exceeded")
Cc: stable@vger.kernel.org
Signed-off-by: default avatarNam Cao <namcao@linutronix.de>
Reviewed-by: default avatarMahesh Salgaonkar <mahesh@linux.ibm.com>
Reviewed-by: default avatarNilay Shroff <nilay@linux.ibm.com>
[maddy: Fixed Nilay's reviewed-by tag]
Signed-off-by: default avatarMadhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20260302003948.1452016-1-namcao@linutronix.de
parent 6373a2b5

arch/powerpc/platforms/pseries/msi.c

+1 −1
Original line number Diff line number Diff line
@@ -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: