summaryrefslogtreecommitdiff
path: root/arch/powerpc/platforms/pseries
diff options
context:
space:
mode:
authorAndy Shevchenko <andriy.shevchenko@linux.intel.com>2015-10-01 12:46:06 +0300
committerMichael Ellerman <mpe@ellerman.id.au>2015-10-05 21:11:24 +1100
commit948ad1acaf456b7213731cd9eb58654930335070 (patch)
treef8dc71d36da1664223f67d985dddb5f60e044d73 /arch/powerpc/platforms/pseries
parent5ada62b1070a57562664713bbf46a78d5dc4cb23 (diff)
powerpc/pseries: extract of_helpers module
Extract a new module to share the code between other modules. There is no functional change. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/platforms/pseries')
-rw-r--r--arch/powerpc/platforms/pseries/Makefile1
-rw-r--r--arch/powerpc/platforms/pseries/of_helpers.c38
-rw-r--r--arch/powerpc/platforms/pseries/of_helpers.h8
-rw-r--r--arch/powerpc/platforms/pseries/reconfig.c34
4 files changed, 49 insertions, 32 deletions
diff --git a/arch/powerpc/platforms/pseries/Makefile b/arch/powerpc/platforms/pseries/Makefile
index 03480796af9a..2e857c2b6ea3 100644
--- a/arch/powerpc/platforms/pseries/Makefile
+++ b/arch/powerpc/platforms/pseries/Makefile
@@ -2,6 +2,7 @@ ccflags-$(CONFIG_PPC64) := $(NO_MINIMAL_TOC)
ccflags-$(CONFIG_PPC_PSERIES_DEBUG) += -DDEBUG
obj-y := lpar.o hvCall.o nvram.o reconfig.o \
+ of_helpers.o \
setup.o iommu.o event_sources.o ras.o \
firmware.o power.o dlpar.o mobility.o rng.o
obj-$(CONFIG_SMP) += smp.o
diff --git a/arch/powerpc/platforms/pseries/of_helpers.c b/arch/powerpc/platforms/pseries/of_helpers.c
new file mode 100644
index 000000000000..1cbd89614484
--- /dev/null
+++ b/arch/powerpc/platforms/pseries/of_helpers.c
@@ -0,0 +1,38 @@
+#include <linux/string.h>
+#include <linux/err.h>
+#include <linux/slab.h>
+#include <linux/of.h>
+
+#include "of_helpers.h"
+
+/**
+ * pseries_of_derive_parent - basically like dirname(1)
+ * @path: the full_name of a node to be added to the tree
+ *
+ * Returns the node which should be the parent of the node
+ * described by path. E.g., for path = "/foo/bar", returns
+ * the node with full_name = "/foo".
+ */
+struct device_node *pseries_of_derive_parent(const char *path)
+{
+ struct device_node *parent = NULL;
+ char *parent_path = "/";
+ size_t parent_path_len = strrchr(path, '/') - path + 1;
+
+ /* reject if path is "/" */
+ if (!strcmp(path, "/"))
+ return ERR_PTR(-EINVAL);
+
+ if (strrchr(path, '/') != path) {
+ parent_path = kmalloc(parent_path_len, GFP_KERNEL);
+ if (!parent_path)
+ return ERR_PTR(-ENOMEM);
+ strlcpy(parent_path, path, parent_path_len);
+ }
+ parent = of_find_node_by_path(parent_path);
+ if (!parent)
+ return ERR_PTR(-EINVAL);
+ if (strcmp(parent_path, "/"))
+ kfree(parent_path);
+ return parent;
+}
diff --git a/arch/powerpc/platforms/pseries/of_helpers.h b/arch/powerpc/platforms/pseries/of_helpers.h
new file mode 100644
index 000000000000..bb83d39aef65
--- /dev/null
+++ b/arch/powerpc/platforms/pseries/of_helpers.h
@@ -0,0 +1,8 @@
+#ifndef _PSERIES_OF_HELPERS_H
+#define _PSERIES_OF_HELPERS_H
+
+#include <linux/of.h>
+
+struct device_node *pseries_of_derive_parent(const char *path);
+
+#endif /* _PSERIES_OF_HELPERS_H */
diff --git a/arch/powerpc/platforms/pseries/reconfig.c b/arch/powerpc/platforms/pseries/reconfig.c
index 0f319521e002..7c7fcc042549 100644
--- a/arch/powerpc/platforms/pseries/reconfig.c
+++ b/arch/powerpc/platforms/pseries/reconfig.c
@@ -22,37 +22,7 @@
#include <asm/uaccess.h>
#include <asm/mmu.h>
-/**
- * derive_parent - basically like dirname(1)
- * @path: the full_name of a node to be added to the tree
- *
- * Returns the node which should be the parent of the node
- * described by path. E.g., for path = "/foo/bar", returns
- * the node with full_name = "/foo".
- */
-static struct device_node *derive_parent(const char *path)
-{
- struct device_node *parent = NULL;
- char *parent_path = "/";
- size_t parent_path_len = strrchr(path, '/') - path + 1;
-
- /* reject if path is "/" */
- if (!strcmp(path, "/"))
- return ERR_PTR(-EINVAL);
-
- if (strrchr(path, '/') != path) {
- parent_path = kmalloc(parent_path_len, GFP_KERNEL);
- if (!parent_path)
- return ERR_PTR(-ENOMEM);
- strlcpy(parent_path, path, parent_path_len);
- }
- parent = of_find_node_by_path(parent_path);
- if (!parent)
- return ERR_PTR(-EINVAL);
- if (strcmp(parent_path, "/"))
- kfree(parent_path);
- return parent;
-}
+#include "of_helpers.h"
static int pSeries_reconfig_add_node(const char *path, struct property *proplist)
{
@@ -71,7 +41,7 @@ static int pSeries_reconfig_add_node(const char *path, struct property *proplist
of_node_set_flag(np, OF_DYNAMIC);
of_node_init(np);
- np->parent = derive_parent(path);
+ np->parent = pseries_of_derive_parent(path);
if (IS_ERR(np->parent)) {
err = PTR_ERR(np->parent);
goto out_err;