iommu/vt-d: Remove device comparison in context_setup_pass_through_cb

commit 64f7929
Author: Jerry Snitselaar <jsnitsel@redhat.com>
Date: Fri Feb 28 18:27:25 2025 +0800

    iommu/vt-d: Remove device comparison in context_setup_pass_through_cb

    Remove the device comparison check in context_setup_pass_through_cb.
    pci_for_each_dma_alias already makes a decision on whether the
    callback function should be called for a device. With the check
    in place it will fail to create context entries for aliases as
    it walks up to the root bus.

    Fixes: 2031c46 ("iommu/vt-d: Add support for static identity domain")
    Closes: https://lore.kernel.org/linux-iommu/82499eb6-00b7-4f83-879a-e97b4144f576@linux.intel.com/
    Cc: stable@vger.kernel.org
    Signed-off-by: Jerry Snitselaar <jsnitsel@redhat.com>
    Link: https://lore.kernel.org/r/20250224180316.140123-1-jsnitsel@redhat.com
    Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
    Signed-off-by: Joerg Roedel <jroedel@suse.de>

(cherry picked from commit 64f7929)
Signed-off-by: Jerry Snitselaar <jsnitsel@redhat.com>
JIRA: https://issues.redhat.com/browse/RHEL-70102
Upstream-Status: git://git.kernel.org/pub/scm/linux/kernel/git/iommu/linux.git

Author: snits

drivers/iommu/intel/iommu.c

@@ -4547,9 +4547,6 @@ static int context_setup_pass_through_cb(struct pci_dev *pdev, u16 alias, void *
 {
 	struct device *dev = data;
 
-	if (dev != &pdev->dev)
-		return 0;
-
 	return context_setup_pass_through(dev, PCI_BUS_NUM(alias), alias & 0xff);
 }