The commit c18647900ec8 ("iommu/dma: Relax locking in
iommu_dma_prepare_msi()") introduced a compliation warning,
drivers/iommu/dma-iommu.c: In function 'iommu_dma_prepare_msi':
drivers/iommu/dma-iommu.c:1206:27: warning: variable 'cookie' set but
not used [-Wunused-but-set-variable]
struct iommu_dma_cookie *cookie;
^~~~~~
Fixes: c18647900ec8 ("iommu/dma: Relax locking in iommu_dma_prepare_msi()")
Signed-off-by: Qian Cai <[email protected]>
---
drivers/iommu/dma-iommu.c | 3 ---
1 file changed, 3 deletions(-)
diff --git a/drivers/iommu/dma-iommu.c b/drivers/iommu/dma-iommu.c
index c363294b3bb9..a2e96a5fd9a7 100644
--- a/drivers/iommu/dma-iommu.c
+++ b/drivers/iommu/dma-iommu.c
@@ -1203,7 +1203,6 @@ int iommu_dma_prepare_msi(struct msi_desc *desc,
phys_addr_t msi_addr)
{
struct device *dev = msi_desc_to_dev(desc);
struct iommu_domain *domain = iommu_get_domain_for_dev(dev);
- struct iommu_dma_cookie *cookie;
struct iommu_dma_msi_page *msi_page;
static DEFINE_MUTEX(msi_prepare_lock); /* see below */
@@ -1212,8 +1211,6 @@ int iommu_dma_prepare_msi(struct msi_desc *desc,
phys_addr_t msi_addr)
return 0;
}
- cookie = domain->iova_cookie;
-
/*
* In fact the whole prepare operation should already be serialised by
* irq_domain_mutex further up the callchain, but that's pretty subtle
--
2.21.0 (Apple Git-122.2)
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