linux-stable.git/drivers/of, branch linux-3.19.y

drivers/of: Add empty ranges quirk for PA-Semi

2015-04-19T08:10:23+00:00

commit 41d9489319f28f06cf51731131bc353d5a6bce59 upstream.

The "sdc" node is missing the ranges property, it needs to be treated
as having an empty one otherwise translation fails for its children.

Fixes 746c9e9f92dd, "of/base: Fix PowerPC address parsing hack"

Tested-by: Steven Rostedt 
Signed-off-by: Benjamin Herrenschmidt 
Signed-off-by: Grant Likely 
Signed-off-by: Greg Kroah-Hartman

of/irq: Fix of_irq_parse_one() returned error codes

2015-04-13T12:03:54+00:00

commit d7c146053dd195b90c79b9b8131431f44541d015 upstream.

The error code paths that require cleanup use a goto to jump to the
cleanup code and return an error code. However, the error code variable
res, which is initialized to -EINVAL when declared, is then overwritten
with the return value of of_parse_phandle_with_args(), and reused as the
return code from of_irq_parse_one(). This leads to an undetermined error
being returned instead of the expected -EINVAL value. Fix it.

Signed-off-by: Laurent Pinchart 
Signed-off-by: Rob Herring 
Signed-off-by: Greg Kroah-Hartman

of: handle both '/' and ':' in path strings

2015-03-26T12:59:47+00:00

commit 721a09e95c786346b4188863a1cfa3909c76f690 upstream.

Commit 106937e8ccdc ("of: fix handling of '/' in options for
of_find_node_by_path()") caused a regression in OF handling of
stdout-path. While it fixes some cases which have '/' after the ':', it
breaks cases where there is more than one '/' *before* the ':'.

For example, it breaks this boot string

  stdout-path = "/rdb/serial@f040ab00:115200";

So rather than doing sequentialized checks (first for '/', then for ':';
or vice versa), to get the correct behavior we need to check for the
first occurrence of either one of them.

It so happens that the handy strcspn() helper can do just that.

Fixes: 106937e8ccdc ("of: fix handling of '/' in options for of_find_node_by_path()")
Signed-off-by: Brian Norris 
Acked-by: Leif Lindholm 
Signed-off-by: Rob Herring 
Signed-off-by: Greg Kroah-Hartman

of: fix handling of '/' in options for of_find_node_by_path()

2015-03-26T12:59:46+00:00

commit 106937e8ccdcf0f4b95fbf0fe9abd42766cade33 upstream.

Ensure proper handling of paths with appended options (after ':'),
where those options may contain a '/'.

Fixes: 7914a7c5651a ("of: support passing console options with stdout-path")
Reported-by: Peter Hurley 
Signed-off-by: Leif Lindholm 
Signed-off-by: Rob Herring 
Signed-off-by: Greg Kroah-Hartman

of/pci: Free resources on failure in of_pci_get_host_bridge_resources()

2015-03-18T13:11:11+00:00

commit d2be00c0fb5ae0794deffcdb0425cd5a8d823db0 upstream.

In the function of_pci_get_host_bridge_resources() if the parsing of ranges
fails, previously allocated resources inclusive of bus_range are not freed
and are not expected to be freed by the function caller on error return.

This patch fixes the issues by adding code that properly frees resources
and bus_range before exiting the function with an error return value.

Fixes: cbe4097f8ae6 ("of/pci: Add support for parsing PCI host bridge resources from DT")
Signed-off-by: Lorenzo Pieralisi 
Signed-off-by: Bjorn Helgaas 
Acked-by: Liviu Dudau 
CC: Arnd Bergmann 
CC: Rob Herring 
Signed-off-by: Greg Kroah-Hartman

of/unittest: Overlays with sub-devices tests

2015-01-23T13:10:07+00:00

Introduce selftests for overlays using sub-devices present
in children nodes.

Signed-off-by: Pantelis Antoniou 
Signed-off-by: Grant Likely

of/platform: Handle of_populate drivers in notifier

2015-01-22T15:36:55+00:00

When using overlays with drivers calling of_populate the notifier
will try to create the device twice. Using the populated bit
before proceeding protects against this.

Signed-off-by: Pantelis Antoniou 
Signed-off-by: Grant Likely

of/overlay: Do not generate duplicate nodes

2015-01-22T15:36:48+00:00

During the course of the rewrites a bug sneaked in when dealing
with children nodes of overlays, which ends up duplicating
sub nodes.

Simply remove the duplicate traversal of child nodes to fix.

Signed-off-by: Pantelis Antoniou 
Signed-off-by: Grant Likely

dma-mapping: fix debug print to display correct dma_pfn_offset

2015-01-13T19:48:45+00:00

fix the dev_dbg to display the offset which is the calculated
dma_pfn_offset value and set later in the code.

Signed-off-by: Murali Karicheri 
Signed-off-by: Rob Herring

Merge tag 'iommu-config-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

2014-12-16T22:53:01+00:00

Pull ARM SoC/iommu configuration update from Arnd Bergmann:
 "The iomm-config branch contains work from Will Deacon, quoting his
  description:

    This series adds automatic IOMMU and DMA-mapping configuration for
    OF-based DMA masters described using the generic IOMMU devicetree
    bindings. Although there is plenty of future work around splitting up
    iommu_ops, adding default IOMMU domains and sorting out automatic IOMMU
    group creation for the platform_bus, this is already useful enough for
    people to port over their IOMMU drivers and start using the new probing
    infrastructure (indeed, Marek has patches queued for the Exynos IOMMU).

  The branch touches core ARM and IOMMU driver files, and the respective
  maintainers (Russell King and Joerg Roedel) agreed to have the
  contents merged through the arm-soc tree.

  The final version was ready just before the merge window, so we ended
  up delaying it a bit longer than the rest, but we don't expect to see
  regressions because this is just additional infrastructure that will
  get used in drivers starting in 3.20 but is unused so far"

* tag 'iommu-config-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  iommu: store DT-probed IOMMU data privately
  arm: dma-mapping: plumb our iommu mapping ops into arch_setup_dma_ops
  arm: call iommu_init before of_platform_populate
  dma-mapping: detect and configure IOMMU in of_dma_configure
  iommu: fix initialization without 'add_device' callback
  iommu: provide helper function to configure an IOMMU for an of master
  iommu: add new iommu_ops callback for adding an OF device
  dma-mapping: replace set_arch_dma_coherent_ops with arch_setup_dma_ops
  iommu: provide early initialisation hook for IOMMU drivers