[PATCH v4 03/16] iommu/s390: Fail probe for non-PCI devices
From: Robin Murphy <robin.murphy@arm.com>
Date: 2022-08-15 16:20:47
Also in:
linux-iommu, lkml
Subsystem:
iommu subsystem, s390 iommu (pci), the rest · Maintainers:
Joerg Roedel, Will Deacon, Niklas Schnelle, Matthew Rosato, Linus Torvalds
From: Matthew Rosato <mjrosato@linux.ibm.com> s390-iommu only supports pci_bus_type today. Tested-by: Niklas Schnelle <schnelle@linux.ibm.com> Signed-off-by: Matthew Rosato <mjrosato@linux.ibm.com> Signed-off-by: Robin Murphy <robin.murphy@arm.com> --- v4: New drivers/iommu/s390-iommu.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/iommu/s390-iommu.c b/drivers/iommu/s390-iommu.c
index c898bcbbce11..8158a4ed0c60 100644
--- a/drivers/iommu/s390-iommu.c
+++ b/drivers/iommu/s390-iommu.c@@ -185,7 +185,12 @@ static void s390_iommu_detach_device(struct iommu_domain *domain, static struct iommu_device *s390_iommu_probe_device(struct device *dev) { - struct zpci_dev *zdev = to_zpci_dev(dev); + struct zpci_dev *zdev; + + if (!dev_is_pci(dev)) + return ERR_PTR(-ENODEV); + + zdev = to_zpci_dev(dev); return &zdev->iommu_dev; }
--
2.36.1.dirty
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