Commit 12243a81 authored by Dimitri Sivanich's avatar Dimitri Sivanich Committed by Joerg Roedel
Browse files

iommu/amd: Fix panic accessing amd_iommu_enable_faulting 



This fixes a bug introduced by commit d74169ce ("iommu/vt-d: Allocate
DMAR fault interrupts locally").  The panic happens when
amd_iommu_enable_faulting is called from CPUHP_AP_ONLINE_DYN context.

Fixes: d74169ce ("iommu/vt-d: Allocate DMAR fault interrupts locally")
Signed-off-by: default avatarDimitri Sivanich <sivanich@hpe.com>
Tested-by: default avatarYi Zhang <yi.zhang@redhat.com>
Reviewed-by: default avatarJerry Snitselaar <jsnitsel@redhat.com>
Reviewed-by: default avatarVasant Hegde <vasant.hegde@amd.com>
Link: https://lore.kernel.org/r/ZljHE/R4KLzGU6vx@hpe.com


Signed-off-by: default avatarJoerg Roedel <jroedel@suse.de>
parent 83a7eefe

drivers/iommu/amd/init.c

+1 −1
Original line number Diff line number Diff line
@@ -3362,7 +3362,7 @@ int amd_iommu_reenable(int mode) 
	return 0;

}



int __init amd_iommu_enable_faulting(unsigned int cpu)

int amd_iommu_enable_faulting(unsigned int cpu)

{

	/* We enable MSI later when PCI is initialized */

	return 0;