Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc

Pull powerpc updates from Benjamin Herrenschmidt:
 "The bulk of this is LE updates.  One should now be able to build an LE
  kernel and even run some things in it.

  I'm still sitting on a handful of patches to enable the new ABI that I
  *might* still send this merge window around, but due to the
  incertainty (they are pretty fresh) I want to keep them separate.

  Other notable changes are some infrastructure bits to better handle
  PCI pass-through under KVM, some bits and pieces added to the new
  PowerNV platform support such as access to the CPU SCOM bus via sysfs,
  and support for EEH error handling on PHB3 (Power8 PCIe).

  We also grew arch_get_random_long() for both pseries and powernv when
  running on P7+ and P8, exploiting the HW rng.

  And finally various embedded updates from freescale"

* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (154 commits)
  powerpc: Fix fatal SLB miss when restoring PPR
  powerpc/powernv: Reserve the correct PE number
  powerpc/powernv: Add PE to its own PELTV
  powerpc/powernv: Add support for indirect XSCOM via debugfs
  powerpc/scom: Improve debugfs interface
  powerpc/scom: Enable 64-bit addresses
  powerpc/boot: Properly handle the base "of" boot wrapper
  powerpc/bpf: Support MOD operation
  powerpc/bpf: Fix DIVWU instruction opcode
  of: Move definition of of_find_next_cache_node into common code.
  powerpc: Remove big endianness assumption in of_find_next_cache_node
  powerpc/tm: Remove interrupt disable in __switch_to()
  powerpc: word-at-a-time optimization for 64-bit Little Endian
  powerpc/bpf: BPF JIT compiler for 64-bit Little Endian
  powerpc: Only save/restore SDR1 if in hypervisor mode
  powerpc/pmu: Fix ADB_PMU_LED_IDE dependencies
  powerpc/nvram: Fix endian issue when using the partition length
  powerpc/nvram: Fix endian issue when reading the NVRAM size
  powerpc/nvram: Scan partitions only once
  powerpc/mpc512x: remove unnecessary #if
  ...

1 files changed, 31 insertions, 0 deletions

diff --git a/drivers/of/base.c b/drivers/of/base.c
index 7d4c70f859e3..aace017fc452 100644
--- a/drivers/of/base.c
+++ b/drivers/of/base.c
@@ -1882,3 +1882,34 @@ int of_device_is_stdout_path(struct device_node *dn)
         return of_stdout == dn;
 }
 EXPORT_SYMBOL_GPL(of_device_is_stdout_path);
+
+/**
+ *      of_find_next_cache_node - Find a node's subsidiary cache
+ *      @np:    node of type "cpu" or "cache"
+ *
+ *      Returns a node pointer with refcount incremented, use
+ *      of_node_put() on it when done.  Caller should hold a reference
+ *      to np.
+ */
+struct device_node *of_find_next_cache_node(const struct device_node *np)
+{
+        struct device_node *child;
+        const phandle *handle;
+
+        handle = of_get_property(np, "l2-cache", NULL);
+        if (!handle)
+                handle = of_get_property(np, "next-level-cache", NULL);
+
+        if (handle)
+                return of_find_node_by_phandle(be32_to_cpup(handle));
+
+        /* OF on pmac has nodes instead of properties named "l2-cache"
+         * beneath CPU nodes.
+         */
+        if (!strcmp(np->type, "cpu"))
+                for_each_child_of_node(np, child)
+                        if (!strcmp(child->type, "cache"))
+                                return child;
+
+        return NULL;
+}