On Sun, Jan 11, 2015 at 1:19 AM, Gaurav Minocha
<gaurav.minocha.os@xxxxxxxxx> wrote:
> 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@xxxxxxxxx>
Applied for 3.20. Thanks.
> ---
> drivers/of/Kconfig | 1 -
> drivers/of/unittest.c | 70 +++++++++------------------------------------------
> 2 files changed, 12 insertions(+), 59 deletions(-)
>
> diff --git a/drivers/of/Kconfig b/drivers/of/Kconfig
> index b5e0c87..38d1c51 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 844838e..139363a 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();
>
> --
> 2.1.0
>
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