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iommu/of: mark an unused function as __maybe_unused 

When CONFIG_OF_ADDRESS is not set, there is a build warning/error
about an unused function.
Annotate the function to quieten the warning/error.

../drivers/iommu/of_iommu.c:176:29: warning: 'iommu_resv_region_get_type' defined but not used [-Wunused-function]
  176 | static enum iommu_resv_type iommu_resv_region_get_type(struct device *dev, struct resource *phys,
      |                             ^~~~~~~~~~~~~~~~~~~~~~~~~~

Fixes: a5bf3cfce8 ("iommu: Implement of_iommu_get_resv_regions()")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Thierry Reding <treding@nvidia.com>
Cc: Joerg Roedel <jroedel@suse.de>
Cc: Will Deacon <will@kernel.org>
Cc: iommu@lists.linux.dev
Reviewed-by: Thierry Reding <treding@nvidia.com>
Link: https://lore.kernel.org/r/20230209010359.23831-1-rdunlap@infradead.org
[joro: Improve code formatting]
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Randy Dunlap 2023-02-08 17:03:59 -08:00 committed by Joerg Roedel
parent 189d496b48
commit 4762315d1c
1 changed files with 4 additions and 2 deletions
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6
drivers/iommu/of_iommu.c
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@ -173,8 +173,10 @@ const struct iommu_ops *of_iommu_configure(struct device *dev,
return ops;
}
static enum iommu_resv_type iommu_resv_region_get_type(struct device *dev, struct resource *phys,
phys_addr_t start, size_t length)
static enum iommu_resv_type __maybe_unused
iommu_resv_region_get_type(struct device *dev,
struct resource *phys,
phys_addr_t start, size_t length)
{
phys_addr_t end = start + length - 1;