iommu/vt-d: Remove device comparison in context_setup_pass_through_cb

JIRA: https://issues.redhat.com/browse/RHEL-78701

Upstream Status: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git

commit 64f7929
Author: Jerry Snitselaar <[email protected]>
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/[email protected]/
    Cc: [email protected]
    Signed-off-by: Jerry Snitselaar <[email protected]>
    Link: https://lore.kernel.org/r/[email protected]
    Signed-off-by: Lu Baolu <[email protected]>
    Signed-off-by: Joerg Roedel <[email protected]>

Signed-off-by: Eder Zulian <[email protected]>

Author: efzrh

drivers/iommu/intel/iommu.c

@@ -4378,9 +4378,6 @@ 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);
 }