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Commit d1a2523d authored by Bjorn Helgaas's avatar Bjorn Helgaas
Browse files

Merge branches 'pci/hotplug', 'pci/pci_is_bridge' and 'pci/virtualization' into next 

* pci/hotplug:
  PCI: cpqphp: Fix possible null pointer dereference
  NVMe: Implement PCIe reset notification callback
  PCI: Notify driver before and after device reset

* pci/pci_is_bridge:
  pcmcia: Use pci_is_bridge() to simplify code
  PCI: pciehp: Use pci_is_bridge() to simplify code
  PCI: acpiphp: Use pci_is_bridge() to simplify code
  PCI: cpcihp: Use pci_is_bridge() to simplify code
  PCI: shpchp: Use pci_is_bridge() to simplify code
  PCI: rpaphp: Use pci_is_bridge() to simplify code
  sparc/PCI: Use pci_is_bridge() to simplify code
  powerpc/PCI: Use pci_is_bridge() to simplify code
  ia64/PCI: Use pci_is_bridge() to simplify code
  x86/PCI: Use pci_is_bridge() to simplify code
  PCI: Use pci_is_bridge() to simplify code
  PCI: Add new pci_is_bridge() interface
  PCI: Rename pci_is_bridge() to pci_has_subordinate()

* pci/virtualization:
  PCI: Introduce new device binding path using pci_dev.driver_override

Conflicts:
	drivers/pci/pci-sysfs.c
parents 79d458bf cab9a128 56604fae 782a985d

Documentation/ABI/testing/sysfs-bus-pci

+21 −0
Original line number Diff line number Diff line
@@ -250,3 +250,24 @@ Description: 
		valid.  For example, writing a 2 to this file when sriov_numvfs

		is not 0 and not 2 already will return an error. Writing a 10

		when the value of sriov_totalvfs is 8 will return an error.



What:		/sys/bus/pci/devices/.../driver_override

Date:		April 2014

Contact:	Alex Williamson <alex.williamson@redhat.com>

Description:

		This file allows the driver for a device to be specified which

		will override standard static and dynamic ID matching.  When

		specified, only a driver with a name matching the value written

		to driver_override will have an opportunity to bind to the

		device.  The override is specified by writing a string to the

		driver_override file (echo pci-stub > driver_override) and

		may be cleared with an empty string (echo > driver_override).

		This returns the device to standard matching rules binding.

		Writing to driver_override does not automatically unbind the

		device from its current driver or make any attempt to

		automatically load the specified driver.  If no driver with a

		matching name is currently loaded in the kernel, the device

		will not bind to any driver.  This also allows devices to

		opt-out of driver binding using a driver_override name such as

		"none".  Only a single driver may be specified in the override,

		there is no support for parsing delimiters.

arch/ia64/pci/fixup.c

+1 −3
Original line number Diff line number Diff line
@@ -49,9 +49,7 @@ static void pci_fixup_video(struct pci_dev *pdev) 
		 * type BRIDGE, or CARDBUS. Host to PCI controllers use

		 * PCI header type NORMAL.

		 */

		if (bridge

		    &&((bridge->hdr_type == PCI_HEADER_TYPE_BRIDGE)

		       ||(bridge->hdr_type == PCI_HEADER_TYPE_CARDBUS))) {

		if (bridge && (pci_is_bridge(bridge))) {

			pci_read_config_word(bridge, PCI_BRIDGE_CONTROL,

						&config);

			if (!(config & PCI_BRIDGE_CTL_VGA))

arch/powerpc/kernel/pci-hotplug.c

+1 −2
Original line number Diff line number Diff line
@@ -98,8 +98,7 @@ void pcibios_add_pci_devices(struct pci_bus * bus) 
		max = bus->busn_res.start;

		for (pass = 0; pass < 2; pass++) {

			list_for_each_entry(dev, &bus->devices, bus_list) {

				if (dev->hdr_type == PCI_HEADER_TYPE_BRIDGE ||

				    dev->hdr_type == PCI_HEADER_TYPE_CARDBUS)

				if (pci_is_bridge(dev))

					max = pci_scan_bridge(bus, dev,

							      max, pass);

			}

arch/powerpc/kernel/pci_of_scan.c

+1 −2
Original line number Diff line number Diff line
@@ -362,8 +362,7 @@ static void __of_scan_bus(struct device_node *node, struct pci_bus *bus, 


	/* Now scan child busses */

	list_for_each_entry(dev, &bus->devices, bus_list) {

		if (dev->hdr_type == PCI_HEADER_TYPE_BRIDGE ||

		    dev->hdr_type == PCI_HEADER_TYPE_CARDBUS) {

		if (pci_is_bridge(dev)) {

			of_scan_pci_bridge(dev);

		}

	}

arch/sparc/kernel/pci.c

+1 −2
Original line number Diff line number Diff line
@@ -543,8 +543,7 @@ static void pci_of_scan_bus(struct pci_pbm_info *pbm, 
			printk("PCI: dev header type: %x\n",

			       dev->hdr_type);



		if (dev->hdr_type == PCI_HEADER_TYPE_BRIDGE ||

		    dev->hdr_type == PCI_HEADER_TYPE_CARDBUS)

		if (pci_is_bridge(dev))

			of_scan_pci_bridge(pbm, child, dev);

	}

}