linux-toradex.git/drivers/pci, branch v3.1

PCI: Disable MPS configuration by default

2011-10-04T16:52:28+00:00

Add the ability to disable PCI-E MPS turning and using the BIOS
configured MPS defaults.  Due to the number of issues recently
discovered on some x86 chipsets, make this the default behavior.

Also, add the option for peer to peer DMA MPS configuration.  Peer to
peer DMA is outside the scope of this patch, but MPS configuration could
prevent it from working by having the MPS on one root port different
than the MPS on another.  To work around this, simply make the system
wide MPS the smallest possible value (128B).

Signed-off-by: Jon Mason 
Acked-by: Benjamin Herrenschmidt 
Signed-off-by: Linus Torvalds

pci: Don't crash when reading mpss from root complex

2011-09-13T23:08:31+00:00

In pcie_find_smpss(), we have the following statement:

 	if (dev->is_hotplug_bridge && (!list_is_singular(&dev->bus->devices) ||
	    dev->bus->self->pcie_type != PCI_EXP_TYPE_ROOT_PORT))

The problem is that at least on my machine, this gets called for the
root complex (virtual P2P bridge), and dev->bus->self is NULL since
the parent bus for this is not itself anchor to a PCI device.

This adds the necessary NULL check.

Signed-off-by: Benjamin Herrenschmidt 
Acked-by: Jon Mason 
Signed-off-by: Linus Torvalds

PCI: Remove MRRS modification from MPS setting code

2011-09-10T02:49:58+00:00

Modifying the Maximum Read Request Size to 0 (value of 128Bytes) has
massive negative ramifications on some devices.  Without knowing which
devices have this issue, do not modify from the default value when
walking the PCI-E bus in pcie_bus_safe mode.  Also, make pcie_bus_safe
the default procedure.

Tested-by: Sven Schnelle 
Tested-by: Simon Kirby 
Tested-by: Stephen M. Cameron 
Reported-and-tested-by: Eric Dumazet 
Reported-and-tested-by: Niels Ole Salscheider 
References: https://bugzilla.kernel.org/show_bug.cgi?id=42162
Signed-off-by: Jon Mason 
Acked-by: Jesse Barnes 
Signed-off-by: Linus Torvalds

Fix pointer dereference before call to pcie_bus_configure_settings

2011-09-10T02:49:58+00:00

Commit b03e7495a862 ("PCI: Set PCI-E Max Payload Size on fabric")
introduced a potential NULL pointer dereference in calls to
pcie_bus_configure_settings due to attempts to access pci_bus self
variables when the self pointer is NULL.

To correct this, verify that the self pointer in pci_bus is non-NULL
before dereferencing it.

Reported-by: Stanislaw Gruszka 
Signed-off-by: Shyam Iyer 
Signed-off-by: Jon Mason 
Acked-by: Jesse Barnes 
Signed-off-by: Linus Torvalds

pci: fix new kernel-doc warning in pci.c

2011-08-21T01:02:32+00:00

Fix new kernel-doc warning in pci.c:

  Warning(drivers/pci/pci.c:3259): No description found for parameter 'mps'
  Warning(drivers/pci/pci.c:3259): Excess function parameter 'rq' description in 'pcie_set_mps'

Signed-off-by: Randy Dunlap 
Cc: Jesse Barnes 
Signed-off-by: Linus Torvalds

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6

2011-08-19T17:02:37+00:00

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6:
  PCI: OF: Don't crash when bridge parent is NULL.
  PCI: export pcie_bus_configure_settings symbol
  PCI: code and comments cleanup
  PCI: make cardbus-bridge resources optional
  PCI: make SRIOV resources optional
  PCI : ability to relocate assigned pci-resources
  PCI: honor child buses add_size in hot plug configuration
  PCI: Set PCI-E Max Payload Size on fabric

PCI: OF: Don't crash when bridge parent is NULL.

2011-08-19T15:51:37+00:00

In pcibios_get_phb_of_node(), we will crash while booting if
bus->bridge->parent is NULL.

Check for this case and avoid dereferencing the NULL pointer.

Signed-off-by: David Daney 
Acked-by: Benjamin Herrenschmidt 
Acked-by: Grant Likely 
Signed-off-by: Jesse Barnes

Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6

2011-08-03T07:17:02+00:00

* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: (28 commits)
  ACPI:  delete stale reference in kernel-parameters.txt
  ACPI: add missing _OSI strings
  ACPI: remove NID_INVAL
  thermal: make THERMAL_HWMON implementation fully internal
  thermal: split hwmon lookup to a separate function
  thermal: hide CONFIG_THERMAL_HWMON
  ACPI print OSI(Linux) warning only once
  ACPI: DMI workaround for Asus A8N-SLI Premium and Asus A8N-SLI DELUX
  ACPI / Battery: propagate sysfs error in acpi_battery_add()
  ACPI / Battery: avoid acpi_battery_add() use-after-free
  ACPI: introduce "acpi_rsdp=" parameter for kdump
  ACPI: constify ops structs
  ACPI: fix CONFIG_X86_REROUTE_FOR_BROKEN_BOOT_IRQS
  ACPI: fix 80 char overflow
  ACPI / Battery: Resolve the race condition in the sysfs_remove_battery()
  ACPI / Battery: Add the check before refresh sysfs in the battery_notify()
  ACPI / Battery: Add the hibernation process in the battery_notify()
  ACPI / Battery: Rename acpi_battery_quirks2 with acpi_battery_quirks
  ACPI / Battery: Change 16-bit signed negative battery current into correct value
  ACPI / Battery: Add the power unit macro
  ...

PCI: export pcie_bus_configure_settings symbol

2011-08-02T15:53:00+00:00

pcie_bus_configure_settings needs to be exported if the PCI hotplug
driver is being compiled as a module.

Reported-by: Stephen Rothwell 
Signed-off-by: Jon Mason 
Signed-off-by: Jesse Barnes

PCI: code and comments cleanup

2011-08-01T18:50:50+00:00

a) adjust_resource_sorted() is now called reassign_resource_sorted()
b) nice-to-have is now called optional
c) add_list is now called realloc_list.

Signed-off-by: Ram Pai 
Signed-off-by: Jesse Barnes