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authorQian Cai <cai@lca.pw>2020-01-06 10:27:27 -0500
committerJoerg Roedel <jroedel@suse.de>2020-01-07 17:08:58 +0100
commit55817b340a31951d23d1692db45522560b1d20f9 (patch)
tree5855fe29818e856523e7558a24292887fcde534f /drivers/iommu
parentf78947c409204138a4bc0609f98e07ef9d01ac0a (diff)
iommu/dma: fix variable 'cookie' set but not used
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 <cai@lca.pw> Acked-by: Robin Murphy <robin.murphy@arm.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu')
-rw-r--r--drivers/iommu/dma-iommu.c3
1 files changed, 0 insertions, 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