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authorGaurav Minocha <gaurav.minocha.os@gmail.com>2015-01-10 23:19:51 -0800
committerRob Herring <robh@kernel.org>2015-01-13 13:58:02 -0600
commit3ce04b4a9fdc30b6ec651e477dd08fee4e48f9aa (patch)
treef865fb235fc96de0780c2cc3c6dc888d6abadbc1 /drivers/of
parent9a4305bde41e87a2c56b560ebd1783cf3fbbcea3 (diff)
downloadlinux-3ce04b4a9fdc30b6ec651e477dd08fee4e48f9aa.tar.bz2
Removes OF_UNITTEST dependency on OF_DYNAMIC config symbol
This patch intends to remove the unittests dependency on the functions defined in dynamic.c. So, rather than calling of_attach_node defined in dynamic.c, minimal functionality required to attach a new node is re-defined in unittest.c. Also, now after executing the tests the test data is not removed from the device tree so there is no need to call of_detach_node. Tested with and without OF_DYNAMIC enabled on ppc, arm and x86 Signed-off-by: Gaurav Minocha <gaurav.minocha.os@gmail.com> Signed-off-by: Rob Herring <robh@kernel.org>
Diffstat (limited to 'drivers/of')
-rw-r--r--drivers/of/Kconfig1
-rw-r--r--drivers/of/unittest.c70
2 files changed, 12 insertions, 59 deletions
diff --git a/drivers/of/Kconfig b/drivers/of/Kconfig
index b5e0c873d4e1..38d1c51f58b1 100644
--- a/drivers/of/Kconfig
+++ b/drivers/of/Kconfig
@@ -10,7 +10,6 @@ menu "Device Tree and Open Firmware support"
config OF_UNITTEST
bool "Device Tree runtime unit tests"
depends on OF_IRQ && OF_EARLY_FLATTREE
- select OF_DYNAMIC
select OF_RESOLVE
help
This option builds in test cases for the device tree infrastructure
diff --git a/drivers/of/unittest.c b/drivers/of/unittest.c
index 844838e11ef1..139363af5c88 100644
--- a/drivers/of/unittest.c
+++ b/drivers/of/unittest.c
@@ -822,6 +822,7 @@ static void update_node_properties(struct device_node *np,
static int attach_node_and_children(struct device_node *np)
{
struct device_node *next, *dup, *child;
+ unsigned long flags;
dup = of_find_node_by_path(np->full_name);
if (dup) {
@@ -838,8 +839,17 @@ static int attach_node_and_children(struct device_node *np)
child = np->child;
np->child = NULL;
- np->sibling = NULL;
- of_attach_node(np);
+
+ mutex_lock(&of_mutex);
+ raw_spin_lock_irqsave(&devtree_lock, flags);
+ np->sibling = np->parent->child;
+ np->parent->child = np;
+ of_node_clear_flag(np, OF_DETACHED);
+ raw_spin_unlock_irqrestore(&devtree_lock, flags);
+
+ __of_attach_node_sysfs(np);
+ mutex_unlock(&of_mutex);
+
while (child) {
next = child->sibling;
attach_node_and_children(child);
@@ -911,59 +921,6 @@ static int __init selftest_data_add(void)
return 0;
}
-/**
- * detach_node_and_children - detaches node
- * and its children from live tree
- *
- * @np: Node to detach from live tree
- */
-static void detach_node_and_children(struct device_node *np)
-{
- while (np->child)
- detach_node_and_children(np->child);
- of_detach_node(np);
-}
-
-/**
- * selftest_data_remove - removes the selftest data
- * nodes from the live tree
- */
-static void selftest_data_remove(void)
-{
- struct device_node *np;
- struct property *prop;
-
- if (selftest_live_tree) {
- of_node_put(of_aliases);
- of_node_put(of_chosen);
- of_aliases = NULL;
- of_chosen = NULL;
- for_each_child_of_node(of_root, np)
- detach_node_and_children(np);
- __of_detach_node_sysfs(of_root);
- of_root = NULL;
- return;
- }
-
- while (last_node_index-- > 0) {
- if (nodes[last_node_index]) {
- np = of_find_node_by_path(nodes[last_node_index]->full_name);
- if (np == nodes[last_node_index]) {
- if (of_aliases == np) {
- of_node_put(of_aliases);
- of_aliases = NULL;
- }
- detach_node_and_children(np);
- } else {
- for_each_property_of_node(np, prop) {
- if (strcmp(prop->name, "testcase-alias") == 0)
- of_remove_property(np, prop);
- }
- }
- }
- }
-}
-
#ifdef CONFIG_OF_OVERLAY
static int selftest_probe(struct platform_device *pdev)
@@ -1475,9 +1432,6 @@ static int __init of_selftest(void)
of_selftest_platform_populate();
of_selftest_overlay();
- /* removing selftest data from live tree */
- selftest_data_remove();
-
/* Double check linkage after removing testcase data */
of_selftest_check_tree_linkage();