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-rw-r--r--drivers/of/Kconfig11
-rw-r--r--drivers/of/address.c11
-rw-r--r--drivers/of/of_net.c29
-rw-r--r--drivers/of/unittest.c46
4 files changed, 65 insertions, 32 deletions
diff --git a/drivers/of/Kconfig b/drivers/of/Kconfig
index 7bcaeec876c0..1470b5227834 100644
--- a/drivers/of/Kconfig
+++ b/drivers/of/Kconfig
@@ -34,7 +34,11 @@ config OF_PROMTREE
# Hardly any platforms need this. It is safe to select, but only do so if you
# need it.
config OF_DYNAMIC
- bool
+ bool "Support for dynamic device trees" if OF_UNITTEST
+ help
+ On some platforms, the device tree can be manipulated at runtime.
+ While this option is selected automatically on such platforms, you
+ can enable it manually to improve device tree unit test coverage.
config OF_ADDRESS
def_bool y
@@ -87,5 +91,10 @@ config OF_OVERLAY
bool "Device Tree overlays"
select OF_DYNAMIC
select OF_RESOLVE
+ help
+ Overlays are a method to dynamically modify part of the kernel's
+ device tree with dynamically loaded data.
+ While this option is selected automatically when needed, you can
+ enable it manually to improve device tree unit test coverage.
endmenu # OF
diff --git a/drivers/of/address.c b/drivers/of/address.c
index ad2906919d45..78a7dcbec7d8 100644
--- a/drivers/of/address.c
+++ b/drivers/of/address.c
@@ -450,12 +450,17 @@ static struct of_bus *of_match_bus(struct device_node *np)
return NULL;
}
-static int of_empty_ranges_quirk(void)
+static int of_empty_ranges_quirk(struct device_node *np)
{
if (IS_ENABLED(CONFIG_PPC)) {
- /* To save cycles, we cache the result */
+ /* To save cycles, we cache the result for global "Mac" setting */
static int quirk_state = -1;
+ /* PA-SEMI sdc DT bug */
+ if (of_device_is_compatible(np, "1682m-sdc"))
+ return true;
+
+ /* Make quirk cached */
if (quirk_state < 0)
quirk_state =
of_machine_is_compatible("Power Macintosh") ||
@@ -490,7 +495,7 @@ static int of_translate_one(struct device_node *parent, struct of_bus *bus,
* This code is only enabled on powerpc. --gcl
*/
ranges = of_get_property(parent, rprop, &rlen);
- if (ranges == NULL && !of_empty_ranges_quirk()) {
+ if (ranges == NULL && !of_empty_ranges_quirk(parent)) {
pr_debug("OF: no ranges; cannot translate\n");
return 1;
}
diff --git a/drivers/of/of_net.c b/drivers/of/of_net.c
index 73e14184aafe..d820f3edd431 100644
--- a/drivers/of/of_net.c
+++ b/drivers/of/of_net.c
@@ -38,6 +38,15 @@ int of_get_phy_mode(struct device_node *np)
}
EXPORT_SYMBOL_GPL(of_get_phy_mode);
+static const void *of_get_mac_addr(struct device_node *np, const char *name)
+{
+ struct property *pp = of_find_property(np, name, NULL);
+
+ if (pp && pp->length == ETH_ALEN && is_valid_ether_addr(pp->value))
+ return pp->value;
+ return NULL;
+}
+
/**
* Search the device tree for the best MAC address to use. 'mac-address' is
* checked first, because that is supposed to contain to "most recent" MAC
@@ -58,20 +67,16 @@ EXPORT_SYMBOL_GPL(of_get_phy_mode);
*/
const void *of_get_mac_address(struct device_node *np)
{
- struct property *pp;
+ const void *addr;
- pp = of_find_property(np, "mac-address", NULL);
- if (pp && (pp->length == 6) && is_valid_ether_addr(pp->value))
- return pp->value;
+ addr = of_get_mac_addr(np, "mac-address");
+ if (addr)
+ return addr;
- pp = of_find_property(np, "local-mac-address", NULL);
- if (pp && (pp->length == 6) && is_valid_ether_addr(pp->value))
- return pp->value;
+ addr = of_get_mac_addr(np, "local-mac-address");
+ if (addr)
+ return addr;
- pp = of_find_property(np, "address", NULL);
- if (pp && (pp->length == 6) && is_valid_ether_addr(pp->value))
- return pp->value;
-
- return NULL;
+ return of_get_mac_addr(np, "address");
}
EXPORT_SYMBOL(of_get_mac_address);
diff --git a/drivers/of/unittest.c b/drivers/of/unittest.c
index fdb597766be9..e844907c9efa 100644
--- a/drivers/of/unittest.c
+++ b/drivers/of/unittest.c
@@ -228,8 +228,9 @@ static void __init of_unittest_check_tree_linkage(void)
child_count = of_unittest_check_node_linkage(of_root);
unittest(child_count > 0, "Device node data structure is corrupted\n");
- unittest(child_count == allnode_count, "allnodes list size (%i) doesn't match"
- "sibling lists size (%i)\n", allnode_count, child_count);
+ unittest(child_count == allnode_count,
+ "allnodes list size (%i) doesn't match sibling lists size (%i)\n",
+ allnode_count, child_count);
pr_debug("allnodes list size (%i); sibling lists size (%i)\n", allnode_count, child_count);
}
@@ -294,6 +295,7 @@ static void __init of_unittest_parse_phandle_with_args(void)
for (i = 0; i < 8; i++) {
bool passed = true;
+
rc = of_parse_phandle_with_args(np, "phandle-list",
"#phandle-cells", i, &args);
@@ -553,6 +555,7 @@ static void __init of_unittest_parse_interrupts(void)
for (i = 0; i < 4; i++) {
bool passed = true;
+
args.args_count = 0;
rc = of_irq_parse_one(np, i, &args);
@@ -573,6 +576,7 @@ static void __init of_unittest_parse_interrupts(void)
for (i = 0; i < 4; i++) {
bool passed = true;
+
args.args_count = 0;
rc = of_irq_parse_one(np, i, &args);
@@ -625,6 +629,7 @@ static void __init of_unittest_parse_interrupts_extended(void)
for (i = 0; i < 7; i++) {
bool passed = true;
+
rc = of_irq_parse_one(np, i, &args);
/* Test the values from tests-phandle.dtsi */
@@ -680,7 +685,7 @@ static void __init of_unittest_parse_interrupts_extended(void)
of_node_put(np);
}
-static struct of_device_id match_node_table[] = {
+static const struct of_device_id match_node_table[] = {
{ .data = "A", .name = "name0", }, /* Name alone is lowest priority */
{ .data = "B", .type = "type1", }, /* followed by type alone */
@@ -746,15 +751,15 @@ static void __init of_unittest_match_node(void)
}
}
-struct device test_bus = {
- .init_name = "unittest-bus",
+static const struct platform_device_info test_bus_info = {
+ .name = "unittest-bus",
};
static void __init of_unittest_platform_populate(void)
{
int irq, rc;
struct device_node *np, *child, *grandchild;
- struct platform_device *pdev;
- struct of_device_id match[] = {
+ struct platform_device *pdev, *test_bus;
+ const struct of_device_id match[] = {
{ .compatible = "test-device", },
{}
};
@@ -777,23 +782,27 @@ static void __init of_unittest_platform_populate(void)
irq = platform_get_irq(pdev, 0);
unittest(irq < 0 && irq != -EPROBE_DEFER, "device parsing error failed - %d\n", irq);
- if (unittest(np = of_find_node_by_path("/testcase-data/platform-tests"),
- "No testcase data in device tree\n"));
+ np = of_find_node_by_path("/testcase-data/platform-tests");
+ unittest(np, "No testcase data in device tree\n");
+ if (!np)
return;
- if (unittest(!(rc = device_register(&test_bus)),
- "testbus registration failed; rc=%i\n", rc));
+ test_bus = platform_device_register_full(&test_bus_info);
+ rc = PTR_ERR_OR_ZERO(test_bus);
+ unittest(!rc, "testbus registration failed; rc=%i\n", rc);
+ if (rc)
return;
+ test_bus->dev.of_node = np;
+ of_platform_populate(np, match, NULL, &test_bus->dev);
for_each_child_of_node(np, child) {
- of_platform_populate(child, match, NULL, &test_bus);
for_each_child_of_node(child, grandchild)
unittest(of_find_device_by_node(grandchild),
"Could not create device for node '%s'\n",
grandchild->name);
}
- of_platform_depopulate(&test_bus);
+ of_platform_depopulate(&test_bus->dev);
for_each_child_of_node(np, child) {
for_each_child_of_node(child, grandchild)
unittest(!of_find_device_by_node(grandchild),
@@ -801,7 +810,7 @@ static void __init of_unittest_platform_populate(void)
grandchild->name);
}
- device_unregister(&test_bus);
+ platform_device_unregister(test_bus);
of_node_put(np);
}
@@ -873,6 +882,10 @@ static int __init unittest_data_add(void)
{
void *unittest_data;
struct device_node *unittest_data_node, *np;
+ /*
+ * __dtb_testcases_begin[] and __dtb_testcases_end[] are magically
+ * created by cmd_dt_S_dtb in scripts/Makefile.lib
+ */
extern uint8_t __dtb_testcases_begin[];
extern uint8_t __dtb_testcases_end[];
const int size = __dtb_testcases_end - __dtb_testcases_begin;
@@ -917,6 +930,7 @@ static int __init unittest_data_add(void)
np = unittest_data_node->child;
while (np) {
struct device_node *next = np->sibling;
+
np->parent = of_root;
attach_node_and_children(np);
np = next;
@@ -953,7 +967,7 @@ static int unittest_remove(struct platform_device *pdev)
return 0;
}
-static struct of_device_id unittest_match[] = {
+static const struct of_device_id unittest_match[] = {
{ .compatible = "unittest", },
{},
};
@@ -1545,7 +1559,7 @@ static int unittest_i2c_bus_remove(struct platform_device *pdev)
return 0;
}
-static struct of_device_id unittest_i2c_bus_match[] = {
+static const struct of_device_id unittest_i2c_bus_match[] = {
{ .compatible = "unittest-i2c-bus", },
{},
};
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-05 07:38:25 +0000