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-rw-r--r--drivers/of/address.c4
-rw-r--r--drivers/of/base.c1
-rw-r--r--drivers/of/device.c7
-rw-r--r--drivers/of/fdt.c24
-rw-r--r--drivers/of/kobj.c2
-rw-r--r--drivers/of/of_mdio.c1
-rw-r--r--drivers/of/of_reserved_mem.c21
-rw-r--r--drivers/of/overlay.c4
-rw-r--r--drivers/of/property.c4
-rw-r--r--drivers/of/unittest-data/tests-phandle.dtsi10
-rw-r--r--drivers/of/unittest.c86
11 files changed, 108 insertions, 56 deletions
diff --git a/drivers/of/address.c b/drivers/of/address.c
index c42aebba35ab..30806dd35735 100644
--- a/drivers/of/address.c
+++ b/drivers/of/address.c
@@ -975,11 +975,13 @@ EXPORT_SYMBOL_GPL(of_dma_get_range);
*/
bool of_dma_is_coherent(struct device_node *np)
{
- struct device_node *node = of_node_get(np);
+ struct device_node *node;
if (IS_ENABLED(CONFIG_OF_DMA_DEFAULT_COHERENT))
return true;
+ node = of_node_get(np);
+
while (node) {
if (of_property_read_bool(node, "dma-coherent")) {
of_node_put(node);
diff --git a/drivers/of/base.c b/drivers/of/base.c
index f0dbb7ad88cf..3925da5690d3 100644
--- a/drivers/of/base.c
+++ b/drivers/of/base.c
@@ -1634,6 +1634,7 @@ int of_parse_phandle_with_args_map(const struct device_node *np,
out_args->np = new;
of_node_put(cur);
cur = new;
+ new = NULL;
}
put:
of_node_put(cur);
diff --git a/drivers/of/device.c b/drivers/of/device.c
index 258742830e36..566d8af05157 100644
--- a/drivers/of/device.c
+++ b/drivers/of/device.c
@@ -258,12 +258,15 @@ int of_device_request_module(struct device *dev)
if (size < 0)
return size;
- str = kmalloc(size + 1, GFP_KERNEL);
+ /* Reserve an additional byte for the trailing '\0' */
+ size++;
+
+ str = kmalloc(size, GFP_KERNEL);
if (!str)
return -ENOMEM;
of_device_get_modalias(dev, str, size);
- str[size] = '\0';
+ str[size - 1] = '\0';
ret = request_module(str);
kfree(str);
diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c
index 800ad252cf9c..7c284ca0212c 100644
--- a/drivers/of/fdt.c
+++ b/drivers/of/fdt.c
@@ -25,6 +25,7 @@
#include <linux/debugfs.h>
#include <linux/serial_core.h>
#include <linux/sysfs.h>
+#include <linux/random.h>
#include <asm/setup.h> /* for COMMAND_LINE_SIZE */
#include <asm/page.h>
@@ -391,7 +392,7 @@ static int unflatten_dt_nodes(const void *blob,
for (offset = 0;
offset >= 0 && depth >= initial_depth;
offset = fdt_next_node(blob, offset, &depth)) {
- if (WARN_ON_ONCE(depth >= FDT_MAX_DEPTH))
+ if (WARN_ON_ONCE(depth >= FDT_MAX_DEPTH - 1))
continue;
if (!IS_ENABLED(CONFIG_OF_KOBJ) &&
@@ -576,11 +577,11 @@ static int __init __reserved_mem_reserve_reg(unsigned long node,
if (size &&
early_init_dt_reserve_memory_arch(base, size, nomap) == 0)
- pr_debug("Reserved memory: reserved region for node '%s': base %pa, size %ld MiB\n",
- uname, &base, (unsigned long)size / SZ_1M);
+ pr_debug("Reserved memory: reserved region for node '%s': base %pa, size %lu MiB\n",
+ uname, &base, (unsigned long)(size / SZ_1M));
else
- pr_info("Reserved memory: failed to reserve memory for node '%s': base %pa, size %ld MiB\n",
- uname, &base, (unsigned long)size / SZ_1M);
+ pr_info("Reserved memory: failed to reserve memory for node '%s': base %pa, size %lu MiB\n",
+ uname, &base, (unsigned long)(size / SZ_1M));
len -= t_len;
if (first) {
@@ -1077,6 +1078,7 @@ int __init early_init_dt_scan_chosen(unsigned long node, const char *uname,
{
int l;
const char *p;
+ const void *rng_seed;
pr_debug("search \"chosen\", depth: %d, uname: %s\n", depth, uname);
@@ -1111,6 +1113,18 @@ int __init early_init_dt_scan_chosen(unsigned long node, const char *uname,
pr_debug("Command line is: %s\n", (char*)data);
+ rng_seed = of_get_flat_dt_prop(node, "rng-seed", &l);
+ if (rng_seed && l > 0) {
+ add_bootloader_randomness(rng_seed, l);
+
+ /* try to clear seed so it won't be found. */
+ fdt_nop_property(initial_boot_params, node, "rng-seed");
+
+ /* update CRC check value */
+ of_fdt_crc32 = crc32_be(~0, initial_boot_params,
+ fdt_totalsize(initial_boot_params));
+ }
+
/* break now */
return 1;
}
diff --git a/drivers/of/kobj.c b/drivers/of/kobj.c
index a32e60b024b8..6675b5e56960 100644
--- a/drivers/of/kobj.c
+++ b/drivers/of/kobj.c
@@ -119,7 +119,7 @@ int __of_attach_node_sysfs(struct device_node *np)
struct property *pp;
int rc;
- if (!of_kset)
+ if (!IS_ENABLED(CONFIG_SYSFS) || !of_kset)
return 0;
np->kobj.kset = of_kset;
diff --git a/drivers/of/of_mdio.c b/drivers/of/of_mdio.c
index 100adacfdca9..9031c57aa1b5 100644
--- a/drivers/of/of_mdio.c
+++ b/drivers/of/of_mdio.c
@@ -283,6 +283,7 @@ int of_mdiobus_register(struct mii_bus *mdio, struct device_node *np)
return 0;
unregister:
+ of_node_put(child);
mdiobus_unregister(mdio);
return rc;
}
diff --git a/drivers/of/of_reserved_mem.c b/drivers/of/of_reserved_mem.c
index 895c83e0c7b6..ff230ee2423f 100644
--- a/drivers/of/of_reserved_mem.c
+++ b/drivers/of/of_reserved_mem.c
@@ -154,9 +154,9 @@ static int __init __reserved_mem_alloc_size(unsigned long node,
ret = early_init_dt_alloc_reserved_memory_arch(size,
align, start, end, nomap, &base);
if (ret == 0) {
- pr_debug("allocated memory for '%s' node: base %pa, size %ld MiB\n",
+ pr_debug("allocated memory for '%s' node: base %pa, size %lu MiB\n",
uname, &base,
- (unsigned long)size / SZ_1M);
+ (unsigned long)(size / SZ_1M));
break;
}
len -= t_len;
@@ -166,8 +166,8 @@ static int __init __reserved_mem_alloc_size(unsigned long node,
ret = early_init_dt_alloc_reserved_memory_arch(size, align,
0, 0, nomap, &base);
if (ret == 0)
- pr_debug("allocated memory for '%s' node: base %pa, size %ld MiB\n",
- uname, &base, (unsigned long)size / SZ_1M);
+ pr_debug("allocated memory for '%s' node: base %pa, size %lu MiB\n",
+ uname, &base, (unsigned long)(size / SZ_1M));
}
if (base == 0) {
@@ -218,6 +218,16 @@ static int __init __rmem_cmp(const void *a, const void *b)
if (ra->base > rb->base)
return 1;
+ /*
+ * Put the dynamic allocations (address == 0, size == 0) before static
+ * allocations at address 0x0 so that overlap detection works
+ * correctly.
+ */
+ if (ra->size < rb->size)
+ return -1;
+ if (ra->size > rb->size)
+ return 1;
+
return 0;
}
@@ -235,8 +245,7 @@ static void __init __rmem_check_for_overlap(void)
this = &reserved_mem[i];
next = &reserved_mem[i + 1];
- if (!(this->base && next->base))
- continue;
+
if (this->base + this->size > next->base) {
phys_addr_t this_end, next_end;
diff --git a/drivers/of/overlay.c b/drivers/of/overlay.c
index a77bfeac867d..fef5b6c2fae2 100644
--- a/drivers/of/overlay.c
+++ b/drivers/of/overlay.c
@@ -170,9 +170,7 @@ static int overlay_notify(struct overlay_changeset *ovcs,
ret = blocking_notifier_call_chain(&overlay_notify_chain,
action, &nd);
- if (ret == NOTIFY_OK || ret == NOTIFY_STOP)
- return 0;
- if (ret) {
+ if (notifier_to_errno(ret)) {
ret = notifier_to_errno(ret);
pr_err("overlay changeset %s notifier error %d, target: %pOF\n",
of_overlay_action_name[action], ret, nd.target);
diff --git a/drivers/of/property.c b/drivers/of/property.c
index 43720c2de138..13c7e55f5cba 100644
--- a/drivers/of/property.c
+++ b/drivers/of/property.c
@@ -918,8 +918,10 @@ of_fwnode_get_reference_args(const struct fwnode_handle *fwnode,
nargs, index, &of_args);
if (ret < 0)
return ret;
- if (!args)
+ if (!args) {
+ of_node_put(of_args.np);
return 0;
+ }
args->nargs = of_args.args_count;
args->fwnode = of_fwnode_handle(of_args.np);
diff --git a/drivers/of/unittest-data/tests-phandle.dtsi b/drivers/of/unittest-data/tests-phandle.dtsi
index 6b33be4c4416..aa0d7027ffa6 100644
--- a/drivers/of/unittest-data/tests-phandle.dtsi
+++ b/drivers/of/unittest-data/tests-phandle.dtsi
@@ -38,6 +38,13 @@
phandle-map-pass-thru = <0x0 0xf0>;
};
+ provider5: provider5 {
+ #phandle-cells = <2>;
+ phandle-map = <2 7 &provider4 2 3>;
+ phandle-map-mask = <0xff 0xf>;
+ phandle-map-pass-thru = <0x0 0xf0>;
+ };
+
consumer-a {
phandle-list = <&provider1 1>,
<&provider2 2 0>,
@@ -64,7 +71,8 @@
<&provider4 4 0x100>,
<&provider4 0 0x61>,
<&provider0>,
- <&provider4 19 0x20>;
+ <&provider4 19 0x20>,
+ <&provider5 2 7>;
phandle-list-bad-phandle = <12345678 0 0>;
phandle-list-bad-args = <&provider2 1 0>,
<&provider4 0>;
diff --git a/drivers/of/unittest.c b/drivers/of/unittest.c
index 29f17c3449aa..8abd541b811d 100644
--- a/drivers/of/unittest.c
+++ b/drivers/of/unittest.c
@@ -52,7 +52,7 @@ static void __init of_unittest_find_node_by_name(void)
np = of_find_node_by_path("/testcase-data");
name = kasprintf(GFP_KERNEL, "%pOF", np);
- unittest(np && !strcmp("/testcase-data", name),
+ unittest(np && name && !strcmp("/testcase-data", name),
"find /testcase-data failed\n");
of_node_put(np);
kfree(name);
@@ -63,14 +63,14 @@ static void __init of_unittest_find_node_by_name(void)
np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
name = kasprintf(GFP_KERNEL, "%pOF", np);
- unittest(np && !strcmp("/testcase-data/phandle-tests/consumer-a", name),
+ unittest(np && name && !strcmp("/testcase-data/phandle-tests/consumer-a", name),
"find /testcase-data/phandle-tests/consumer-a failed\n");
of_node_put(np);
kfree(name);
np = of_find_node_by_path("testcase-alias");
name = kasprintf(GFP_KERNEL, "%pOF", np);
- unittest(np && !strcmp("/testcase-data", name),
+ unittest(np && name && !strcmp("/testcase-data", name),
"find testcase-alias failed\n");
of_node_put(np);
kfree(name);
@@ -81,7 +81,7 @@ static void __init of_unittest_find_node_by_name(void)
np = of_find_node_by_path("testcase-alias/phandle-tests/consumer-a");
name = kasprintf(GFP_KERNEL, "%pOF", np);
- unittest(np && !strcmp("/testcase-data/phandle-tests/consumer-a", name),
+ unittest(np && name && !strcmp("/testcase-data/phandle-tests/consumer-a", name),
"find testcase-alias/phandle-tests/consumer-a failed\n");
of_node_put(np);
kfree(name);
@@ -426,6 +426,9 @@ static void __init of_unittest_parse_phandle_with_args(void)
unittest(passed, "index %i - data error on node %pOF rc=%i\n",
i, args.np, rc);
+
+ if (rc == 0)
+ of_node_put(args.np);
}
/* Check for missing list property */
@@ -467,8 +470,9 @@ static void __init of_unittest_parse_phandle_with_args(void)
static void __init of_unittest_parse_phandle_with_args_map(void)
{
- struct device_node *np, *p0, *p1, *p2, *p3;
+ struct device_node *np, *p[6] = {};
struct of_phandle_args args;
+ unsigned int prefs[6];
int i, rc;
np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-b");
@@ -477,34 +481,24 @@ static void __init of_unittest_parse_phandle_with_args_map(void)
return;
}
- p0 = of_find_node_by_path("/testcase-data/phandle-tests/provider0");
- if (!p0) {
- pr_err("missing testcase data\n");
- return;
- }
-
- p1 = of_find_node_by_path("/testcase-data/phandle-tests/provider1");
- if (!p1) {
- pr_err("missing testcase data\n");
- return;
- }
-
- p2 = of_find_node_by_path("/testcase-data/phandle-tests/provider2");
- if (!p2) {
- pr_err("missing testcase data\n");
- return;
- }
-
- p3 = of_find_node_by_path("/testcase-data/phandle-tests/provider3");
- if (!p3) {
- pr_err("missing testcase data\n");
- return;
+ p[0] = of_find_node_by_path("/testcase-data/phandle-tests/provider0");
+ p[1] = of_find_node_by_path("/testcase-data/phandle-tests/provider1");
+ p[2] = of_find_node_by_path("/testcase-data/phandle-tests/provider2");
+ p[3] = of_find_node_by_path("/testcase-data/phandle-tests/provider3");
+ p[4] = of_find_node_by_path("/testcase-data/phandle-tests/provider4");
+ p[5] = of_find_node_by_path("/testcase-data/phandle-tests/provider5");
+ for (i = 0; i < ARRAY_SIZE(p); ++i) {
+ if (!p[i]) {
+ pr_err("missing testcase data\n");
+ return;
+ }
+ prefs[i] = kref_read(&p[i]->kobj.kref);
}
rc = of_count_phandle_with_args(np, "phandle-list", "#phandle-cells");
- unittest(rc == 7, "of_count_phandle_with_args() returned %i, expected 7\n", rc);
+ unittest(rc == 8, "of_count_phandle_with_args() returned %i, expected 8\n", rc);
- for (i = 0; i < 8; i++) {
+ for (i = 0; i < 9; i++) {
bool passed = true;
memset(&args, 0, sizeof(args));
@@ -515,13 +509,13 @@ static void __init of_unittest_parse_phandle_with_args_map(void)
switch (i) {
case 0:
passed &= !rc;
- passed &= (args.np == p1);
+ passed &= (args.np == p[1]);
passed &= (args.args_count == 1);
passed &= (args.args[0] == 1);
break;
case 1:
passed &= !rc;
- passed &= (args.np == p3);
+ passed &= (args.np == p[3]);
passed &= (args.args_count == 3);
passed &= (args.args[0] == 2);
passed &= (args.args[1] == 5);
@@ -532,28 +526,36 @@ static void __init of_unittest_parse_phandle_with_args_map(void)
break;
case 3:
passed &= !rc;
- passed &= (args.np == p0);
+ passed &= (args.np == p[0]);
passed &= (args.args_count == 0);
break;
case 4:
passed &= !rc;
- passed &= (args.np == p1);
+ passed &= (args.np == p[1]);
passed &= (args.args_count == 1);
passed &= (args.args[0] == 3);
break;
case 5:
passed &= !rc;
- passed &= (args.np == p0);
+ passed &= (args.np == p[0]);
passed &= (args.args_count == 0);
break;
case 6:
passed &= !rc;
- passed &= (args.np == p2);
+ passed &= (args.np == p[2]);
passed &= (args.args_count == 2);
passed &= (args.args[0] == 15);
passed &= (args.args[1] == 0x20);
break;
case 7:
+ passed &= !rc;
+ passed &= (args.np == p[3]);
+ passed &= (args.args_count == 3);
+ passed &= (args.args[0] == 2);
+ passed &= (args.args[1] == 5);
+ passed &= (args.args[2] == 3);
+ break;
+ case 8:
passed &= (rc == -ENOENT);
break;
default:
@@ -562,6 +564,9 @@ static void __init of_unittest_parse_phandle_with_args_map(void)
unittest(passed, "index %i - data error on node %s rc=%i\n",
i, args.np->full_name, rc);
+
+ if (rc == 0)
+ of_node_put(args.np);
}
/* Check for missing list property */
@@ -587,6 +592,13 @@ static void __init of_unittest_parse_phandle_with_args_map(void)
rc = of_parse_phandle_with_args_map(np, "phandle-list-bad-args",
"phandle", 1, &args);
unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
+
+ for (i = 0; i < ARRAY_SIZE(p); ++i) {
+ unittest(prefs[i] == kref_read(&p[i]->kobj.kref),
+ "provider%d: expected:%d got:%d\n",
+ i, prefs[i], kref_read(&p[i]->kobj.kref));
+ of_node_put(p[i]);
+ }
}
static void __init of_unittest_property_string(void)
@@ -1138,6 +1150,8 @@ static void attach_node_and_children(struct device_node *np)
const char *full_name;
full_name = kasprintf(GFP_KERNEL, "%pOF", np);
+ if (!full_name)
+ return;
if (!strcmp(full_name, "/__local_fixups__") ||
!strcmp(full_name, "/__fixups__")) {
@@ -1571,7 +1585,7 @@ static int __init of_unittest_apply_revert_overlay_check(int overlay_nr,
}
/* unittest device must be again in before state */
- if (of_unittest_device_exists(unittest_nr, PDEV_OVERLAY) != before) {
+ if (of_unittest_device_exists(unittest_nr, ovtype) != before) {
unittest(0, "%s with device @\"%s\" %s\n",
overlay_name_from_nr(overlay_nr),
unittest_path(unittest_nr, ovtype),
generated by cgit 1.2.3-korg (git 2.39.0) at 2024-06-19 07:47:46 +0000