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xen/arm: smmuv3: mark arm_smmu_disable_pasid __maybe_unused
When building with clang 12 and CONFIG_ARM_SMMU_V3=y, we observe the
following build error:
drivers/passthrough/arm/smmu-v3.c:1408:20: error: unused function 'arm_smmu_disable_pasid' [-Werror,-Wunused-function]
static inline void arm_smmu_disable_pasid(struct arm_smmu_master *master) { }
^
arm_smmu_disable_pasid is not currently called from anywhere in Xen, but
it is inside a section of code guarded by CONFIG_PCI_ATS, which may be
helpful in the future if the PASID feature is to be implemented. Add the
attribute __maybe_unused to the function.
Signed-off-by: Stewart Hildebrand <stewart.hildebrand@amd.com>
Reviewed-by: Rahul Singh <rahul.singh@arm.com>
This commit is contained in:
Stewart Hildebrand authored and Julien Grall committed
1 parent
8b03f3ec04
commit
0fc5fa9333
1 file changed
+4
-2
@@ -1376,7 +1376,8 @@ static int arm_smmu_enable_pasid(struct arm_smmu_master *master)
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return 0;
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}
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static void arm_smmu_disable_pasid(struct arm_smmu_master *master)
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static void __maybe_unused
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arm_smmu_disable_pasid(struct arm_smmu_master *master)
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{
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struct pci_dev *pdev;
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@@ -1405,7 +1406,8 @@ static inline int arm_smmu_enable_pasid(struct arm_smmu_master *master)
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return 0;
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}
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static inline void arm_smmu_disable_pasid(struct arm_smmu_master *master) { }
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static inline void __maybe_unused
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arm_smmu_disable_pasid(struct arm_smmu_master *master) { }
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#endif /* CONFIG_PCI_ATS */
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static void arm_smmu_detach_dev(struct arm_smmu_master *master)
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