Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci:
  PCI: Set device power state to PCI_D0 for device without native PM support
  PCI hotplug: Always allow acpiphp to handle non-PCIe bridges
  PCI: fix ats compile failure
  PCI: defer enablement of SRIOV BARS

diff --git a/drivers/pci/ats.c b/drivers/pci/ats.c
index 7ec56fb..b0dd08e 100644 (file)
--- a/drivers/pci/ats.c
+++ b/drivers/pci/ats.c
@@ -13,6 +13,7 @@
 #include <linux/export.h>
 #include <linux/pci-ats.h>
 #include <linux/pci.h>
+#include <linux/slab.h>
 
 #include "pci.h"
 

diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c
index fce1c54..9ddf69e 100644 (file)
--- a/drivers/pci/hotplug/acpiphp_glue.c
+++ b/drivers/pci/hotplug/acpiphp_glue.c
@@ -132,6 +132,18 @@ register_slot(acpi_handle handle, u32 lvl, void *context, void **rv)
        if (!acpi_pci_check_ejectable(pbus, handle) && !is_dock_device(handle))
                return AE_OK;
 
+       pdev = pbus->self;
+       if (pdev && pci_is_pcie(pdev)) {
+               tmp = acpi_find_root_bridge_handle(pdev);
+               if (tmp) {
+                       struct acpi_pci_root *root = acpi_pci_find_root(tmp);
+
+                       if (root && (root->osc_control_set &
+                                       OSC_PCI_EXPRESS_NATIVE_HP_CONTROL))
+                               return AE_OK;
+               }
+       }
+
        acpi_evaluate_integer(handle, "_ADR", NULL, &adr);
        device = (adr >> 16) & 0xffff;
        function = adr & 0xffff;
@@ -213,7 +225,6 @@ register_slot(acpi_handle handle, u32 lvl, void *context, void **rv)
 
        pdev = pci_get_slot(pbus, PCI_DEVFN(device, function));
        if (pdev) {
-               pdev->current_state = PCI_D0;
                slot->flags |= (SLOT_ENABLED | SLOT_POWEREDON);
                pci_dev_put(pdev);
        }
@@ -459,17 +470,8 @@ static int add_bridge(acpi_handle handle)
 {
        acpi_status status;
        unsigned long long tmp;
-       struct acpi_pci_root *root;
        acpi_handle dummy_handle;
 
-       /*
-        * We shouldn't use this bridge if PCIe native hotplug control has been
-        * granted by the BIOS for it.
-        */
-       root = acpi_pci_find_root(handle);
-       if (root && (root->osc_control_set & OSC_PCI_EXPRESS_NATIVE_HP_CONTROL))
-               return -ENODEV;
-
        /* if the bridge doesn't have _STA, we assume it is always there */
        status = acpi_get_handle(handle, "_STA", &dummy_handle);
        if (ACPI_SUCCESS(status)) {
@@ -1385,19 +1387,11 @@ static void handle_hotplug_event_func(acpi_handle handle, u32 type,
 static acpi_status
 find_root_bridges(acpi_handle handle, u32 lvl, void *context, void **rv)
 {
-       struct acpi_pci_root *root;
        int *count = (int *)context;
 
        if (!acpi_is_root_bridge(handle))
                return AE_OK;
 
-       root = acpi_pci_find_root(handle);
-       if (!root)
-               return AE_OK;
-
-       if (root->osc_control_set & OSC_PCI_EXPRESS_NATIVE_HP_CONTROL)
-               return AE_OK;
-
        (*count)++;
        acpi_install_notify_handler(handle, ACPI_SYSTEM_NOTIFY,
                                    handle_hotplug_event_bridge, NULL);

diff --git a/drivers/pci/iov.c b/drivers/pci/iov.c
index b82c155..1969a3e 100644 (file)
--- a/drivers/pci/iov.c
+++ b/drivers/pci/iov.c
@@ -283,6 +283,7 @@ static int sriov_enable(struct pci_dev *dev, int nr_virtfn)
        struct resource *res;
        struct pci_dev *pdev;
        struct pci_sriov *iov = dev->sriov;
+       int bars = 0;
 
        if (!nr_virtfn)
                return 0;
@@ -307,6 +308,7 @@ static int sriov_enable(struct pci_dev *dev, int nr_virtfn)
 
        nres = 0;
        for (i = 0; i < PCI_SRIOV_NUM_BARS; i++) {
+               bars |= (1 << (i + PCI_IOV_RESOURCES));
                res = dev->resource + PCI_IOV_RESOURCES + i;
                if (res->parent)
                        nres++;
@@ -324,6 +326,11 @@ static int sriov_enable(struct pci_dev *dev, int nr_virtfn)
                return -ENOMEM;
        }
 
+       if (pci_enable_resources(dev, bars)) {
+               dev_err(&dev->dev, "SR-IOV: IOV BARS not allocated\n");
+               return -ENOMEM;
+       }
+
        if (iov->link != dev->devfn) {
                pdev = pci_get_slot(dev->bus, iov->link);
                if (!pdev)

diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index 6f45a73..faccb89 100644 (file)
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -664,6 +664,9 @@ static int pci_platform_power_transition(struct pci_dev *dev, pci_power_t state)
                error = platform_pci_set_power_state(dev, state);
                if (!error)
                        pci_update_current_state(dev, state);
+               /* Fall back to PCI_D0 if native PM is not supported */
+               if (!dev->pm_cap)
+                       dev->current_state = PCI_D0;
        } else {
                error = -ENODEV;
                /* Fall back to PCI_D0 if native PM is not supported */
@@ -1126,7 +1129,7 @@ static int __pci_enable_device_flags(struct pci_dev *dev,
        if (atomic_add_return(1, &dev->enable_cnt) > 1)
                return 0;               /* already enabled */
 
-       for (i = 0; i < DEVICE_COUNT_RESOURCE; i++)
+       for (i = 0; i < PCI_ROM_RESOURCE; i++)
                if (dev->resource[i].flags & flags)
                        bars |= (1 << i);