From: Joerg Roedel jroedel@suse.de
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@vger.kernel.org # v5.5 Reviewed-by: Jerry Snitselaar jsnitsel@redhat.com Acked-by: Lu Baolu baolu.lu@linux.intel.com Signed-off-by: Joerg Roedel jroedel@suse.de Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- 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;