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iommu: Use of_property_present()

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Use of_property_present() to test for property presence rather than
of_(find|get)_property(). This is part of a larger effort to remove
callers of of_find_property() and similar functions. of_find_property()
leaks the DT struct property and data pointers which is a problem for
dynamically allocated nodes which may be freed.

Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Link: https://lore.kernel.org/r/20240731191312.1710417-6-robh@kernel.org
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Rob Herring (Arm) 2024-07-31 13:12:44 -06:00 committed by Joerg Roedel
parent 84b2baf427
commit 04f4f33c94
2 changed files with 2 additions and 4 deletions
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4
drivers/iommu/fsl_pamu_domain.c
View File

@ -416,14 +416,12 @@ static struct iommu_group *fsl_pamu_device_group(struct device *dev)
static struct iommu_device *fsl_pamu_probe_device(struct device *dev) static struct iommu_device *fsl_pamu_probe_device(struct device *dev)
{ {
int len;
/* /*
* uboot must fill the fsl,liodn for platform devices to be supported by * uboot must fill the fsl,liodn for platform devices to be supported by
* the iommu. * the iommu.
*/ */
if (!dev_is_pci(dev) && if (!dev_is_pci(dev) &&
!of_get_property(dev->of_node, "fsl,liodn", &len)) !of_property_present(dev->of_node, "fsl,liodn"))
return ERR_PTR(-ENODEV); return ERR_PTR(-ENODEV);
return &pamu_iommu; return &pamu_iommu;

2
drivers/iommu/of_iommu.c
View File

@ -214,7 +214,7 @@ void of_iommu_get_resv_regions(struct device *dev, struct list_head *list)
* that represent reservations in the IOVA space, which are regions that should * that represent reservations in the IOVA space, which are regions that should
* not be mapped. * not be mapped.
*/ */
if (of_find_property(it.node, "reg", NULL)) { if (of_property_present(it.node, "reg")) {
err = of_address_to_resource(it.node, 0, &phys); err = of_address_to_resource(it.node, 0, &phys);
if (err < 0) { if (err < 0) {
dev_err(dev, "failed to parse memory region %pOF: %d\n", dev_err(dev, "failed to parse memory region %pOF: %d\n",