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Commit 18e88bec authored by Bjorn Helgaas's avatar Bjorn Helgaas
Browse files

Merge branches 'pci/enumeration', 'pci/hotplug', 'pci/misc', 'pci/numa' and... 

Merge branches 'pci/enumeration', 'pci/hotplug', 'pci/misc', 'pci/numa' and 'pci/virtualization' into next

* pci/enumeration:
  PCI: Remove fixed parameter in pci_iov_resource_bar()
  PCI: Add informational printk for invalid BARs
  PCI: Shrink decoding-disabled window while sizing BARs
  PCI: Restore detection of read-only BARs

* pci/hotplug:
  PCI: Remove unused and broken to_hotplug_slot()

* pci/misc:
  PCI: Make FLR and AF FLR reset warning messages different
  PCI: Simplify if-return sequences
  PCI: Delete unnecessary NULL pointer checks

* pci/numa:
  PCI: Allow numa_node override via sysfs

* pci/virtualization:
  xen/pcifront: Process failure for pcifront_(re)scan_root()
parents 35437e3d 26ff46c6 a4acded0 bb383e28 63692df1 23cf1d00

Documentation/ABI/testing/sysfs-bus-pci

+13 −0
Original line number Diff line number Diff line
@@ -281,3 +281,16 @@ Description: 
		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.



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

Date:		Oct 2014

Contact:	Prarit Bhargava <prarit@redhat.com>

Description:

		This file contains the NUMA node to which the PCI device is

		attached, or -1 if the node is unknown.  The initial value

		comes from an ACPI _PXM method or a similar firmware

		source.  If that is missing or incorrect, this file can be

		written to override the node.  In that case, please report

		a firmware bug to the system vendor.  Writing to this file

		taints the kernel with TAINT_FIRMWARE_WORKAROUND, which

		reduces the supportability of your system.

drivers/pci/hotplug/ibmphp_res.c

+1 −4
Original line number Diff line number Diff line
@@ -376,10 +376,7 @@ int __init ibmphp_rsrc_init (void) 
		if (rc)

			return rc;

	}

	rc = once_over ();  /* This is to align ranges (so no -1) */

	if (rc)

		return rc;

	return 0;

	return once_over ();	/* This is to align ranges (so no -1) */

}



/********************************************************************************

drivers/pci/iov.c

+3 −8
Original line number Diff line number Diff line
@@ -479,20 +479,16 @@ void pci_iov_release(struct pci_dev *dev) 
 * pci_iov_resource_bar - get position of the SR-IOV BAR

 * @dev: the PCI device

 * @resno: the resource number

 * @type: the BAR type to be filled in

 *

 * Returns position of the BAR encapsulated in the SR-IOV capability.

 */

int pci_iov_resource_bar(struct pci_dev *dev, int resno,

			 enum pci_bar_type *type)

int pci_iov_resource_bar(struct pci_dev *dev, int resno)

{

	if (resno < PCI_IOV_RESOURCES || resno > PCI_IOV_RESOURCE_END)

		return 0;



	BUG_ON(!dev->is_physfn);



	*type = pci_bar_unknown;



	return dev->sriov->pos + PCI_SRIOV_BAR +

		4 * (resno - PCI_IOV_RESOURCES);

}
@@ -510,13 +506,12 @@ int pci_iov_resource_bar(struct pci_dev *dev, int resno, 
resource_size_t pci_sriov_resource_alignment(struct pci_dev *dev, int resno)

{

	struct resource tmp;

	enum pci_bar_type type;

	int reg = pci_iov_resource_bar(dev, resno, &type);

	int reg = pci_iov_resource_bar(dev, resno);



	if (!reg)

		return 0;



	 __pci_read_base(dev, type, &tmp, reg);

	 __pci_read_base(dev, pci_bar_unknown, &tmp, reg);

	return resource_alignment(&tmp);

}

drivers/pci/pci-acpi.c

+1 −2
Original line number Diff line number Diff line
@@ -322,7 +322,6 @@ static void pci_acpi_wake_dev(struct work_struct *work) 
	pci_wakeup_event(pci_dev);

	pm_runtime_resume(&pci_dev->dev);



	if (pci_dev->subordinate)

	pci_pme_wakeup_bus(pci_dev->subordinate);

}

drivers/pci/pci-sysfs.c

+26 −1
Original line number Diff line number Diff line
@@ -221,12 +221,37 @@ static ssize_t enabled_show(struct device *dev, struct device_attribute *attr, 
static DEVICE_ATTR_RW(enabled);



#ifdef CONFIG_NUMA

static ssize_t numa_node_store(struct device *dev,

			       struct device_attribute *attr, const char *buf,

			       size_t count)

{

	struct pci_dev *pdev = to_pci_dev(dev);

	int node, ret;



	if (!capable(CAP_SYS_ADMIN))

		return -EPERM;



	ret = kstrtoint(buf, 0, &node);

	if (ret)

		return ret;



	if (!node_online(node))

		return -EINVAL;



	add_taint(TAINT_FIRMWARE_WORKAROUND, LOCKDEP_STILL_OK);

	dev_alert(&pdev->dev, FW_BUG "Overriding NUMA node to %d.  Contact your vendor for updates.",

		  node);



	dev->numa_node = node;

	return count;

}



static ssize_t numa_node_show(struct device *dev, struct device_attribute *attr,

			      char *buf)

{

	return sprintf(buf, "%d\n", dev->numa_node);

}

static DEVICE_ATTR_RO(numa_node);

static DEVICE_ATTR_RW(numa_node);

#endif



static ssize_t dma_mask_bits_show(struct device *dev,