iommu: Do not dereference fwnode in struct device

In order to make the underneath API easier to change in the future,
prevent users from dereferencing fwnode from struct device.
Instead, use the specific dev_fwnode() API for that.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Link: https://lore.kernel.org/r/20220801164758.20664-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>

diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
index 780fb70..31b5f4c 100644 (file)
--- a/drivers/iommu/iommu.c
+++ b/drivers/iommu/iommu.c
@@ -173,7 +173,7 @@ int iommu_device_register(struct iommu_device *iommu,
 
        iommu->ops = ops;
        if (hwdev)
-               iommu->fwnode = hwdev->fwnode;
+               iommu->fwnode = dev_fwnode(hwdev);
 
        spin_lock(&iommu_device_lock);
        list_add_tail(&iommu->list, &iommu_device_list);