Merge branch 'v4.4/topic/mm-kaslr-pax_usercopy' into linux-linaro-lsk-v4.4

[firefly-linux-kernel-4.4.55.git] / drivers / pci / host / pci-host-generic.c

diff --git a/drivers/pci/host/pci-host-generic.c b/drivers/pci/host/pci-host-generic.c
index 265dd25169bff9d2edfe827cd9321442d7c1e47d..5434c90db24345bc73ad5e00ecc00d599c40ddaf 100644 (file)
--- a/drivers/pci/host/pci-host-generic.c
+++ b/drivers/pci/host/pci-host-generic.c
@@ -27,7 +27,7 @@
 
 struct gen_pci_cfg_bus_ops {
        u32 bus_shift;
-       void __iomem *(*map_bus)(struct pci_bus *, unsigned int, int);
+       struct pci_ops ops;
 };
 
 struct gen_pci_cfg_windows {
@@ -35,7 +35,7 @@ struct gen_pci_cfg_windows {
        struct resource                         *bus_range;
        void __iomem                            **win;
 
-       const struct gen_pci_cfg_bus_ops        *ops;
+       struct gen_pci_cfg_bus_ops              *ops;
 };
 
 /*
@@ -65,7 +65,11 @@ static void __iomem *gen_pci_map_cfg_bus_cam(struct pci_bus *bus,
 
 static struct gen_pci_cfg_bus_ops gen_pci_cfg_cam_bus_ops = {
        .bus_shift      = 16,
-       .map_bus        = gen_pci_map_cfg_bus_cam,
+       .ops            = {
+               .map_bus        = gen_pci_map_cfg_bus_cam,
+               .read           = pci_generic_config_read,
+               .write          = pci_generic_config_write,
+       }
 };
 
 static void __iomem *gen_pci_map_cfg_bus_ecam(struct pci_bus *bus,
@@ -80,12 +84,11 @@ static void __iomem *gen_pci_map_cfg_bus_ecam(struct pci_bus *bus,
 
 static struct gen_pci_cfg_bus_ops gen_pci_cfg_ecam_bus_ops = {
        .bus_shift      = 20,
-       .map_bus        = gen_pci_map_cfg_bus_ecam,
-};
-
-static struct pci_ops gen_pci_ops = {
-       .read   = pci_generic_config_read,
-       .write  = pci_generic_config_write,
+       .ops            = {
+               .map_bus        = gen_pci_map_cfg_bus_ecam,
+               .read           = pci_generic_config_read,
+               .write          = pci_generic_config_write,
+       }
 };
 
 static const struct of_device_id gen_pci_of_match[] = {
@@ -166,6 +169,7 @@ static int gen_pci_parse_map_cfg_windows(struct gen_pci *pci)
        struct resource *bus_range;
        struct device *dev = pci->host.dev.parent;
        struct device_node *np = dev->of_node;
+       u32 sz = 1 << pci->cfg.ops->bus_shift;
 
        err = of_address_to_resource(np, 0, &pci->cfg.res);
        if (err) {
@@ -193,10 +197,9 @@ static int gen_pci_parse_map_cfg_windows(struct gen_pci *pci)
        bus_range = pci->cfg.bus_range;
        for (busn = bus_range->start; busn <= bus_range->end; ++busn) {
                u32 idx = busn - bus_range->start;
-               u32 sz = 1 << pci->cfg.ops->bus_shift;
 
                pci->cfg.win[idx] = devm_ioremap(dev,
-                                                pci->cfg.res.start + busn * sz,
+                                                pci->cfg.res.start + idx * sz,
                                                 sz);
                if (!pci->cfg.win[idx])
                        return -ENOMEM;
@@ -210,7 +213,6 @@ static int gen_pci_probe(struct platform_device *pdev)
        int err;
        const char *type;
        const struct of_device_id *of_id;
-       const int *prop;
        struct device *dev = &pdev->dev;
        struct device_node *np = dev->of_node;
        struct gen_pci *pci = devm_kzalloc(dev, sizeof(*pci), GFP_KERNEL);
@@ -225,17 +227,10 @@ static int gen_pci_probe(struct platform_device *pdev)
                return -EINVAL;
        }
 
-       prop = of_get_property(of_chosen, "linux,pci-probe-only", NULL);
-       if (prop) {
-               if (*prop)
-                       pci_add_flags(PCI_PROBE_ONLY);
-               else
-                       pci_clear_flags(PCI_PROBE_ONLY);
-       }
+       of_pci_check_probe_only();
 
        of_id = of_match_node(gen_pci_of_match, np);
-       pci->cfg.ops = of_id->data;
-       gen_pci_ops.map_bus = pci->cfg.ops->map_bus;
+       pci->cfg.ops = (struct gen_pci_cfg_bus_ops *)of_id->data;
        pci->host.dev.parent = dev;
        INIT_LIST_HEAD(&pci->host.windows);
        INIT_LIST_HEAD(&pci->resources);
@@ -256,7 +251,9 @@ static int gen_pci_probe(struct platform_device *pdev)
        if (!pci_has_flag(PCI_PROBE_ONLY))
                pci_add_flags(PCI_REASSIGN_ALL_RSRC | PCI_REASSIGN_ALL_BUS);
 
-       bus = pci_scan_root_bus(dev, 0, &gen_pci_ops, pci, &pci->resources);
+
+       bus = pci_scan_root_bus(dev, pci->cfg.bus_range->start,
+                               &pci->cfg.ops->ops, pci, &pci->resources);
        if (!bus) {
                dev_err(dev, "Scanning rootbus failed");
                return -ENODEV;