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UPSTREAM: iommu: dma: Use of_iommu_get_resv_regions()

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For device tree nodes, use the standard of_iommu_get_resv_regions()
implementation to obtain the reserved memory regions associated with a
device.

Bug: 257546262
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Frank Rowand <frowand.list@gmail.com>
Cc: devicetree@vger.kernel.org
Acked-by: Robin Murphy <robin.murphy@arm.com>
Change-Id: I142fa2ef8639b604701f8d0bc70429288a5e8491
Signed-off-by: Thierry Reding <treding@nvidia.com>
Link: https://lore.kernel.org/r/20230120174251.4004100-5-thierry.reding@gmail.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
(cherry picked from commit 5cef282e295f7cf623672470d040716d1e3eacf2)
This commit is contained in:
Thierry Reding 2023-01-20 18:42:51 +01:00 committed by Daniel Mentz
parent 693c712967
commit a032fbc776
1 changed files with 3 additions and 0 deletions
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3
drivers/iommu/dma-iommu.c
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@ -23,6 +23,7 @@
#include <linux/memremap.h>
#include <linux/mm.h>
#include <linux/mutex.h>
#include <linux/of_iommu.h>
#include <linux/pci.h>
#include <linux/scatterlist.h>
#include <linux/spinlock.h>
@ -392,6 +393,8 @@ void iommu_dma_get_resv_regions(struct device *dev, struct list_head *list)
if (!is_of_node(dev_iommu_fwspec_get(dev)->iommu_fwnode))
iort_iommu_get_resv_regions(dev, list);
if (dev->of_node)
of_iommu_get_resv_regions(dev, list);
}
EXPORT_SYMBOL(iommu_dma_get_resv_regions);