diff options
| -rw-r--r-- | arch/x86/kernel/amd_iommu.c | 28 |
1 files changed, 11 insertions, 17 deletions
diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c index c04dcb7f40b..2cd5800e688 100644 --- a/arch/x86/kernel/amd_iommu.c +++ b/arch/x86/kernel/amd_iommu.c @@ -1436,11 +1436,11 @@ static struct dma_ops_domain *find_protection_domain(u16 devid) * in this function. */ static bool get_device_resources(struct device *dev, - struct amd_iommu **iommu, struct protection_domain **domain, u16 *bdf) { struct dma_ops_domain *dma_dom; + struct amd_iommu *iommu; struct pci_dev *pcidev; u16 _bdf; @@ -1450,21 +1450,21 @@ static bool get_device_resources(struct device *dev, pcidev = to_pci_dev(dev); _bdf = calc_devid(pcidev->bus->number, pcidev->devfn); *bdf = amd_iommu_alias_table[_bdf]; - *iommu = amd_iommu_rlookup_table[*bdf]; + iommu = amd_iommu_rlookup_table[*bdf]; *domain = domain_for_device(*bdf); if (*domain == NULL) { dma_dom = find_protection_domain(*bdf); if (!dma_dom) - dma_dom = (*iommu)->default_dom; + dma_dom = iommu->default_dom; *domain = &dma_dom->domain; - attach_device(*iommu, *domain, *bdf); + attach_device(iommu, *domain, *bdf); DUMP_printk("Using protection domain %d for device %s\n", (*domain)->id, dev_name(dev)); } if (domain_for_device(_bdf) == NULL) - attach_device(*iommu, *domain, _bdf); + attach_device(iommu, *domain, _bdf); return true; } @@ -1776,7 +1776,6 @@ static dma_addr_t map_page(struct device *dev, struct page *page, struct dma_attrs *attrs) { unsigned long flags; - struct amd_iommu *iommu; struct protection_domain *domain; u16 devid; dma_addr_t addr; @@ -1785,7 +1784,7 @@ static dma_addr_t map_page(struct device *dev, struct page *page, INC_STATS_COUNTER(cnt_map_single); - if (!get_device_resources(dev, &iommu, &domain, &devid)) + if (!get_device_resources(dev, &domain, &devid)) /* device not handled by any AMD IOMMU */ return (dma_addr_t)paddr; @@ -1815,13 +1814,12 @@ static void unmap_page(struct device *dev, dma_addr_t dma_addr, size_t size, enum dma_data_direction dir, struct dma_attrs *attrs) { unsigned long flags; - struct amd_iommu *iommu; struct protection_domain *domain; u16 devid; INC_STATS_COUNTER(cnt_unmap_single); - if (!get_device_resources(dev, &iommu, &domain, &devid)) + if (!get_device_resources(dev, &domain, &devid)) /* device not handled by any AMD IOMMU */ return; @@ -1864,7 +1862,6 @@ static int map_sg(struct device *dev, struct scatterlist *sglist, struct dma_attrs *attrs) { unsigned long flags; - struct amd_iommu *iommu; struct protection_domain *domain; u16 devid; int i; @@ -1875,7 +1872,7 @@ static int map_sg(struct device *dev, struct scatterlist *sglist, INC_STATS_COUNTER(cnt_map_sg); - if (!get_device_resources(dev, &iommu, &domain, &devid)) + if (!get_device_resources(dev, &domain, &devid)) return map_sg_no_iommu(dev, sglist, nelems, dir); dma_mask = *dev->dma_mask; @@ -1927,7 +1924,6 @@ static void unmap_sg(struct device *dev, struct scatterlist *sglist, struct dma_attrs *attrs) { unsigned long flags; - struct amd_iommu *iommu; struct protection_domain *domain; struct scatterlist *s; u16 devid; @@ -1935,7 +1931,7 @@ static void unmap_sg(struct device *dev, struct scatterlist *sglist, INC_STATS_COUNTER(cnt_unmap_sg); - if (!get_device_resources(dev, &iommu, &domain, &devid)) + if (!get_device_resources(dev, &domain, &devid)) return; if (!dma_ops_domain(domain)) @@ -1962,7 +1958,6 @@ static void *alloc_coherent(struct device *dev, size_t size, { unsigned long flags; void *virt_addr; - struct amd_iommu *iommu; struct protection_domain *domain; u16 devid; phys_addr_t paddr; @@ -1970,7 +1965,7 @@ static void *alloc_coherent(struct device *dev, size_t size, INC_STATS_COUNTER(cnt_alloc_coherent); - if (!get_device_resources(dev, &iommu, &domain, &devid)) { + if (!get_device_resources(dev, &domain, &devid)) { virt_addr = (void *)__get_free_pages(flag, get_order(size)); *dma_addr = __pa(virt_addr); return virt_addr; @@ -2022,13 +2017,12 @@ static void free_coherent(struct device *dev, size_t size, void *virt_addr, dma_addr_t dma_addr) { unsigned long flags; - struct amd_iommu *iommu; struct protection_domain *domain; u16 devid; INC_STATS_COUNTER(cnt_free_coherent); - if (!get_device_resources(dev, &iommu, &domain, &devid)) + if (!get_device_resources(dev, &domain, &devid)) goto free_mem; if (!dma_ops_domain(domain)) |