Commit b951f9dc authored by Gaurav Minocha's avatar Gaurav Minocha Committed by Grant Likely

Enabling OF selftest to run without machine's devicetree

If there is no devicetree present, this patch adds the selftest
data as a live devicetree. It also removes the same after the
testcase execution is complete.

Tested with and without machine's devicetree.
Signed-off-by: default avatarGaurav Minocha <gaurav.minocha.os@gmail.com>
Signed-off-by: default avatarGrant Likely <grant.likely@linaro.org>
parent b5f2a8c0
......@@ -27,6 +27,7 @@ static struct selftest_results {
#define NO_OF_NODES 2
static struct device_node *nodes[NO_OF_NODES];
static int last_node_index;
static bool selftest_live_tree;
#define selftest(result, fmt, ...) { \
if (!(result)) { \
......@@ -630,13 +631,6 @@ static int attach_node_and_children(struct device_node *np)
{
struct device_node *next, *root = np, *dup;
if (!np) {
pr_warn("%s: No tree to attach; not running tests\n",
__func__);
return -ENODATA;
}
/* skip root node */
np = np->child;
/* storing a copy in temporary node */
......@@ -672,12 +666,12 @@ static int attach_node_and_children(struct device_node *np)
static int __init selftest_data_add(void)
{
void *selftest_data;
struct device_node *selftest_data_node;
struct device_node *selftest_data_node, *np;
extern uint8_t __dtb_testcases_begin[];
extern uint8_t __dtb_testcases_end[];
const int size = __dtb_testcases_end - __dtb_testcases_begin;
if (!size || !of_allnodes) {
if (!size) {
pr_warn("%s: No testcase data to attach; not running tests\n",
__func__);
return -ENODATA;
......@@ -692,6 +686,22 @@ static int __init selftest_data_add(void)
return -ENOMEM;
}
of_fdt_unflatten_tree(selftest_data, &selftest_data_node);
if (!selftest_data_node) {
pr_warn("%s: No tree to attach; not running tests\n", __func__);
return -ENODATA;
}
if (!of_allnodes) {
/* enabling flag for removing nodes */
selftest_live_tree = true;
of_allnodes = selftest_data_node;
for_each_of_allnodes(np)
__of_attach_node_sysfs(np);
of_aliases = of_find_node_by_path("/aliases");
of_chosen = of_find_node_by_path("/chosen");
return 0;
}
/* attach the sub-tree to live tree */
return attach_node_and_children(selftest_data_node);
......@@ -723,6 +733,18 @@ 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_allnodes, np)
detach_node_and_children(np);
__of_detach_node_sysfs(of_allnodes);
of_allnodes = NULL;
return;
}
while (last_node_index >= 0) {
if (nodes[last_node_index]) {
np = of_find_node_by_path(nodes[last_node_index]->full_name);
......
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