The iommu_table_lock is only used by code inside an ifdef CONFIG_IRQ_REMAP
block. This leads to the following warning with CONFIG_IRQ_REMAP=n:
amd_iommu.c:86:24: warning: 'iommu_table_lock' defined but not used
[-Wunused-variable]
Guard the spinlock definition with the same ifdef.
Fixes: ea6166f4b83e9 ("iommu/amd: Split irq_lookup_table out of the
amd_iommu_devtable_lock")
Signed-off-by: Tobias Regnery <tobias.regn...@gmail.com>
---
drivers/iommu/amd_iommu.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index 2a99f0f14795..5ba141768000 100644
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -83,7 +83,9 @@
static DEFINE_SPINLOCK(amd_iommu_devtable_lock);
static DEFINE_SPINLOCK(pd_bitmap_lock);
+#ifdef CONFIG_IRQ_REMAP
static DEFINE_SPINLOCK(iommu_table_lock);
+#endif
/* List of all available dev_data structures */
static LLIST_HEAD(dev_data_list);
--
2.17.0
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