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PCI updates for v3.14: 

Resource management
     - Fix allocation from 0-4GB regions (Bjorn Helgaas)
 
   Miscellaneous
     - Enable INTx only when MSI/MSI-X not enabled (Bjorn Helgaas)
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Merge tag 'pci-v3.14-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI fixes from Bjorn Helgaas:
 "These are two important regression fixes for bugs we've introduced so
  far in v3.14.

  One of the resource allocation changes from the merge window is broken
  for 32-bit kernels where we don't use _CRS for PCI host bridges
  (mostly pre-2008 machines), so there's a fix for that.

  The INTx enable change we put in after the merge window turned out to
  break pciehp because we re-enable INTx on the hotplug bridge, which
  apparently breaks MSI for future hotplug events"

* tag 'pci-v3.14-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
  PCI: Don't check resource_size() in pci_bus_alloc_resource()
  PCI: Enable INTx in pci_reenable_device() only when MSI/MSI-X not enabled
This commit is contained in:
Linus Torvalds 2014-03-12 18:29:34 -07:00
parent 18f2af2d68 ac93ac7403
commit ac9dc67b73
2 changed files with 3 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/pci/bus.c
View File

@ -162,8 +162,6 @@ static int pci_bus_alloc_from_region(struct pci_bus *bus, struct resource *res,
avail = *r; avail = *r;
pci_clip_resource_to_region(bus, &avail, region); pci_clip_resource_to_region(bus, &avail, region);
if (!resource_size(&avail))
continue;
/* /*
* "min" is typically PCIBIOS_MIN_IO or PCIBIOS_MIN_MEM to * "min" is typically PCIBIOS_MIN_IO or PCIBIOS_MIN_MEM to

3
drivers/pci/pci.c
View File

@ -1192,6 +1192,9 @@ static int do_pci_enable_device(struct pci_dev *dev, int bars)
return err; return err;
pci_fixup_device(pci_fixup_enable, dev); pci_fixup_device(pci_fixup_enable, dev);
if (dev->msi_enabled || dev->msix_enabled)
return 0;
pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin); pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin);
if (pin) { if (pin) {
pci_read_config_word(dev, PCI_COMMAND, &cmd); pci_read_config_word(dev, PCI_COMMAND, &cmd);