Merge branch 'percpu-for-linus' into percpu-for-next

Conflicts:
	arch/sparc/kernel/smp_64.c
	arch/x86/kernel/cpu/perf_counter.c
	arch/x86/kernel/setup_percpu.c
	drivers/cpufreq/cpufreq_ondemand.c
	mm/percpu.c

Conflicts in core and arch percpu codes are mostly from commit
ed78e1e078dd44249f88b1dd8c76dafb39567161 which substituted many
num_possible_cpus() with nr_cpu_ids.  As for-next branch has moved all
the first chunk allocators into mm/percpu.c, the changes are moved
from arch code to mm/percpu.c.

Signed-off-by: Tejun Heo <tj@kernel.org>

1 files changed, 12 insertions, 3 deletions

diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index 6c93af5ced18..dbd0f947f497 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -1517,11 +1517,20 @@ void pci_enable_ari(struct pci_dev *dev)
  *
  * Perform INTx swizzling for a device behind one level of bridge.  This is
  * required by section 9.1 of the PCI-to-PCI bridge specification for devices
- * behind bridges on add-in cards.
+ * behind bridges on add-in cards.  For devices with ARI enabled, the slot
+ * number is always 0 (see the Implementation Note in section 2.2.8.1 of
+ * the PCI Express Base Specification, Revision 2.1)
  */
 u8 pci_swizzle_interrupt_pin(struct pci_dev *dev, u8 pin)
 {
-        return (((pin - 1) + PCI_SLOT(dev->devfn)) % 4) + 1;
+        int slot;
+
+        if (pci_ari_enabled(dev->bus))
+                slot = 0;
+        else
+                slot = PCI_SLOT(dev->devfn);
+
+        return (((pin - 1) + slot) % 4) + 1;
 }
 
 int
@@ -2171,7 +2180,7 @@ static int pci_parent_bus_reset(struct pci_dev *dev, int probe)
         u16 ctrl;
         struct pci_dev *pdev;
 
-        if (dev->subordinate)
+        if (pci_is_root_bus(dev->bus) || dev->subordinate || !dev->bus->self)
                 return -ENOTTY;
 
         list_for_each_entry(pdev, &dev->bus->devices, bus_list)