From: Joerg Roedel <jroedel@xxxxxxx> commit 1ddb32da4a629fa7f87873d0b6836c2e1feb7518 upstream. The function only has one call-site and there it is never called with dummy or deferred devices. Simplify the check in the function to account for that. Fixes: 1ee0186b9a12 ("iommu/vt-d: Refactor find_domain() helper") Cc: stable@xxxxxxxxxxxxxxx # v5.5 Reviewed-by: Jerry Snitselaar <jsnitsel@xxxxxxxxxx> Acked-by: Lu Baolu <baolu.lu@xxxxxxxxxxxxxxx> Signed-off-by: Joerg Roedel <jroedel@xxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/iommu/intel-iommu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/iommu/intel-iommu.c +++ b/drivers/iommu/intel-iommu.c @@ -2799,7 +2799,7 @@ static int identity_mapping(struct devic struct device_domain_info *info; info = dev->archdata.iommu; - if (info && info != DUMMY_DEVICE_DOMAIN_INFO && info != DEFER_DEVICE_DOMAIN_INFO) + if (info) return (info->domain == si_domain); return 0;