iommu/sun50i: Remove unused variable

The pte_dma variable in the unmap callback is set but never used. Remove
it.

Fixes: 4100b8c229b3 ("iommu: Add Allwinner H6 IOMMU driver")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://lore.kernel.org/r/20200628180844.79205-2-maxime@cerno.tech
Signed-off-by: Joerg Roedel <jroedel@suse.de>

diff --git a/drivers/iommu/sun50i-iommu.c b/drivers/iommu/sun50i-iommu.c
index a1563b54c74313e4ee1b6d19e27caa0f21cccd3f..3b1bf2fb94f59524ed55053aa915c8985b98a111 100644 (file)
--- a/drivers/iommu/sun50i-iommu.c
+++ b/drivers/iommu/sun50i-iommu.c
@@ -556,7 +556,6 @@ static size_t sun50i_iommu_unmap(struct iommu_domain *domain, unsigned long iova
 {
        struct sun50i_iommu_domain *sun50i_domain = to_sun50i_domain(domain);
        phys_addr_t pt_phys;
-       dma_addr_t pte_dma;
        u32 *pte_addr;
        u32 dte;
 
@@ -566,7 +565,6 @@ static size_t sun50i_iommu_unmap(struct iommu_domain *domain, unsigned long iova
 
        pt_phys = sun50i_dte_get_pt_address(dte);
        pte_addr = (u32 *)phys_to_virt(pt_phys) + sun50i_iova_get_pte_index(iova);
-       pte_dma = pt_phys + sun50i_iova_get_pte_index(iova) * PT_ENTRY_SIZE;
 
        if (!sun50i_pte_is_page_valid(*pte_addr))
                return 0;