From: Qian Cai cai@lca.pw
[ Upstream commit 55817b340a31951d23d1692db45522560b1d20f9 ]
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 Signed-off-by: Sasha Levin sashal@kernel.org --- 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 51456e7f264f9..c68a1f072c314 100644 --- a/drivers/iommu/dma-iommu.c +++ b/drivers/iommu/dma-iommu.c @@ -1177,7 +1177,6 @@ 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 */
@@ -1186,8 +1185,6 @@ 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