iommu/vt-d: Remove segment from struct device_domain_info()

It's accessible via info->iommu->segment so this is redundant.

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index aa8548c..5c89eb7 100644 (file)
--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c
@@ -369,7 +369,6 @@ struct dmar_domain {
 struct device_domain_info {
        struct list_head link;  /* link to domain siblings */
        struct list_head global; /* link to global list */
-       int segment;            /* PCI domain */
        u8 bus;                 /* PCI bus number */
        u8 devfn;               /* PCI devfn number */
        struct device *dev; /* it's NULL for PCIe-to-PCI bridge */
@@ -2136,7 +2135,7 @@ dmar_search_domain_by_dev_info(int segment, int bus, int devfn)
        struct device_domain_info *info;
 
        list_for_each_entry(info, &device_domain_list, global)
-               if (info->segment == segment && info->bus == bus &&
+               if (info->iommu->segment == segment && info->bus == bus &&
                    info->devfn == devfn)
                        return info;
 
@@ -2144,7 +2143,7 @@ dmar_search_domain_by_dev_info(int segment, int bus, int devfn)
 }
 
 static struct dmar_domain *dmar_insert_dev_info(struct intel_iommu *iommu,
-                                               int segment, int bus, int devfn,
+                                               int bus, int devfn,
                                                struct device *dev,
                                                struct dmar_domain *domain)
 {
@@ -2156,7 +2155,6 @@ static struct dmar_domain *dmar_insert_dev_info(struct intel_iommu *iommu,
        if (!info)
                return NULL;
 
-       info->segment = segment;
        info->bus = bus;
        info->devfn = devfn;
        info->dev = dev;
@@ -2170,7 +2168,7 @@ static struct dmar_domain *dmar_insert_dev_info(struct intel_iommu *iommu,
                found = find_domain(dev);
        else {
                struct device_domain_info *info2;
-               info2 = dmar_search_domain_by_dev_info(segment, bus, devfn);
+               info2 = dmar_search_domain_by_dev_info(iommu->segment, bus, devfn);
                if (info2)
                        found = info2->domain;
        }
@@ -2250,14 +2248,14 @@ static struct dmar_domain *get_domain_for_dev(struct pci_dev *pdev, int gaw)
 
        /* register pcie-to-pci device */
        if (dev_tmp) {
-               domain = dmar_insert_dev_info(iommu, segment, bus, devfn, NULL,
+               domain = dmar_insert_dev_info(iommu, bus, devfn, NULL,
                                              domain);
                if (!domain)
                        goto error;
        }
 
 found_domain:
-       domain = dmar_insert_dev_info(iommu, segment, pdev->bus->number,
+       domain = dmar_insert_dev_info(iommu, pdev->bus->number,
                                      pdev->devfn, &pdev->dev, domain);
 error:
        if (free != domain)
@@ -2468,8 +2466,7 @@ static int domain_add_dev_info(struct dmar_domain *domain,
        if (!iommu)
                return -ENODEV;
 
-       ndomain = dmar_insert_dev_info(iommu, pci_domain_nr(pdev->bus),
-                                      pdev->bus->number, pdev->devfn,
+       ndomain = dmar_insert_dev_info(iommu, pdev->bus->number, pdev->devfn,
                                       &pdev->dev, domain);
        if (ndomain != domain)
                return -EBUSY;
@@ -4031,7 +4028,7 @@ static void domain_remove_one_dev_info(struct dmar_domain *domain,
 
        spin_lock_irqsave(&device_domain_lock, flags);
        list_for_each_entry_safe(info, tmp, &domain->devices, link) {
-               if (info->segment == pci_domain_nr(pdev->bus) &&
+               if (info->iommu->segment == pci_domain_nr(pdev->bus) &&
                    info->bus == pdev->bus->number &&
                    info->devfn == pdev->devfn) {
                        unlink_domain_info(info);