6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Jerry Snitselaar <jsnitsel@xxxxxxxxxx>
commit 64f792981e35e191eb619f6f2fefab76cc7d6112 upstream.
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: 2031c469f816 ("iommu/vt-d: Add support for static identity domain")
Closes: https://lore.kernel.org/linux-iommu/82499eb6-00b7-4f83-879a-e97b4144f576@xxxxxxxxxxxxxxx/
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Jerry Snitselaar <jsnitsel@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20250224180316.140123-1-jsnitsel@xxxxxxxxxx
Signed-off-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 | 3 ---
1 file changed, 3 deletions(-)
--- a/drivers/iommu/intel/iommu.c
+++ b/drivers/iommu/intel/iommu.c
@@ -4547,9 +4547,6 @@ static int context_setup_pass_through_cb
{
struct device *dev = data;
- if (dev != &pdev->dev)
- return 0;
-
return context_setup_pass_through(dev, PCI_BUS_NUM(alias), alias & 0xff);
}
