* [PATCH AUTOSEL 4.19 223/237] of: unittest: allow base devicetree to have symbol metadata
[not found] <20191116154113.7417-1-sashal@kernel.org>
2019-11-16 15:39 ` [PATCH AUTOSEL 4.19 115/237] spi: uniphier: fix incorrect property items Sasha Levin
2019-11-16 15:40 ` [PATCH AUTOSEL 4.19 187/237] ARM: dts: imx6sx-sdb: Fix enet phy regulator Sasha Levin
@ 2019-11-16 15:40 ` Sasha Levin
2019-11-16 15:40 ` [PATCH AUTOSEL 4.19 224/237] of: unittest: initialize args before calling of_*parse_*() Sasha Levin
3 siblings, 0 replies; 4+ messages in thread
From: Sasha Levin @ 2019-11-16 15:40 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: Frank Rowand, Alan Tull, Sasha Levin, devicetree
From: Frank Rowand <frank.rowand@sony.com>
[ Upstream commit 5babefb7f7ab1f23861336d511cc666fa45ede82 ]
The overlay metadata nodes in the FDT created from testcases.dts
are not handled properly.
The __fixups__ and __local_fixups__ node were added to the live
devicetree, but should not be.
Only the first property in the /__symbols__ node was added to the
live devicetree if the live devicetree already contained a
/__symbols node. All of the node's properties must be added.
Tested-by: Alan Tull <atull@kernel.org>
Signed-off-by: Frank Rowand <frank.rowand@sony.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/of/unittest.c | 43 +++++++++++++++++++++++++++++++++++--------
1 file changed, 35 insertions(+), 8 deletions(-)
diff --git a/drivers/of/unittest.c b/drivers/of/unittest.c
index bac4b4bbc33de..e8997cdb228cb 100644
--- a/drivers/of/unittest.c
+++ b/drivers/of/unittest.c
@@ -1067,20 +1067,44 @@ static void __init of_unittest_platform_populate(void)
* of np into dup node (present in live tree) and
* updates parent of children of np to dup.
*
- * @np: node already present in live tree
+ * @np: node whose properties are being added to the live tree
* @dup: node present in live tree to be updated
*/
static void update_node_properties(struct device_node *np,
struct device_node *dup)
{
struct property *prop;
+ struct property *save_next;
struct device_node *child;
-
- for_each_property_of_node(np, prop)
- of_add_property(dup, prop);
+ int ret;
for_each_child_of_node(np, child)
child->parent = dup;
+
+ /*
+ * "unittest internal error: unable to add testdata property"
+ *
+ * If this message reports a property in node '/__symbols__' then
+ * the respective unittest overlay contains a label that has the
+ * same name as a label in the live devicetree. The label will
+ * be in the live devicetree only if the devicetree source was
+ * compiled with the '-@' option. If you encounter this error,
+ * please consider renaming __all__ of the labels in the unittest
+ * overlay dts files with an odd prefix that is unlikely to be
+ * used in a real devicetree.
+ */
+
+ /*
+ * open code for_each_property_of_node() because of_add_property()
+ * sets prop->next to NULL
+ */
+ for (prop = np->properties; prop != NULL; prop = save_next) {
+ save_next = prop->next;
+ ret = of_add_property(dup, prop);
+ if (ret)
+ pr_err("unittest internal error: unable to add testdata property %pOF/%s",
+ np, prop->name);
+ }
}
/**
@@ -1089,18 +1113,23 @@ static void update_node_properties(struct device_node *np,
*
* @np: Node to attach to live tree
*/
-static int attach_node_and_children(struct device_node *np)
+static void attach_node_and_children(struct device_node *np)
{
struct device_node *next, *dup, *child;
unsigned long flags;
const char *full_name;
full_name = kasprintf(GFP_KERNEL, "%pOF", np);
+
+ if (!strcmp(full_name, "/__local_fixups__") ||
+ !strcmp(full_name, "/__fixups__"))
+ return;
+
dup = of_find_node_by_path(full_name);
kfree(full_name);
if (dup) {
update_node_properties(np, dup);
- return 0;
+ return;
}
child = np->child;
@@ -1121,8 +1150,6 @@ static int attach_node_and_children(struct device_node *np)
attach_node_and_children(child);
child = next;
}
-
- return 0;
}
/**
--
2.20.1
^ permalink raw reply related [flat|nested] 4+ messages in thread* [PATCH AUTOSEL 4.19 224/237] of: unittest: initialize args before calling of_*parse_*()
[not found] <20191116154113.7417-1-sashal@kernel.org>
` (2 preceding siblings ...)
2019-11-16 15:40 ` [PATCH AUTOSEL 4.19 223/237] of: unittest: allow base devicetree to have symbol metadata Sasha Levin
@ 2019-11-16 15:40 ` Sasha Levin
3 siblings, 0 replies; 4+ messages in thread
From: Sasha Levin @ 2019-11-16 15:40 UTC (permalink / raw)
To: linux-kernel, stable
Cc: Frank Rowand, Guenter Roeck, Alan Tull, Sasha Levin, devicetree
From: Frank Rowand <frank.rowand@sony.com>
[ Upstream commit eeb07c573ec307c53fe2f6ac6d8d11c261f64006 ]
Callers of of_irq_parse_one() blindly use the pointer args.np
without checking whether of_irq_parse_one() had an error and
thus did not set the value of args.np. Initialize args to
zero so that using the format "%pOF" to show the value of
args.np will show "(null)" when of_irq_parse_one() has an
error. This prevents the dereference of a random value.
Make the same fix for callers of of_parse_phandle_with_args()
and of_parse_phandle_with_args_map().
Reported-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Alan Tull <atull@kernel.org>
Signed-off-by: Frank Rowand <frank.rowand@sony.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/of/unittest.c | 15 +++++++++++++--
1 file changed, 13 insertions(+), 2 deletions(-)
diff --git a/drivers/of/unittest.c b/drivers/of/unittest.c
index e8997cdb228cb..68f52966bbc04 100644
--- a/drivers/of/unittest.c
+++ b/drivers/of/unittest.c
@@ -375,6 +375,7 @@ static void __init of_unittest_parse_phandle_with_args(void)
for (i = 0; i < 8; i++) {
bool passed = true;
+ memset(&args, 0, sizeof(args));
rc = of_parse_phandle_with_args(np, "phandle-list",
"#phandle-cells", i, &args);
@@ -428,6 +429,7 @@ static void __init of_unittest_parse_phandle_with_args(void)
}
/* Check for missing list property */
+ memset(&args, 0, sizeof(args));
rc = of_parse_phandle_with_args(np, "phandle-list-missing",
"#phandle-cells", 0, &args);
unittest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc);
@@ -436,6 +438,7 @@ static void __init of_unittest_parse_phandle_with_args(void)
unittest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc);
/* Check for missing cells property */
+ memset(&args, 0, sizeof(args));
rc = of_parse_phandle_with_args(np, "phandle-list",
"#phandle-cells-missing", 0, &args);
unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
@@ -444,6 +447,7 @@ static void __init of_unittest_parse_phandle_with_args(void)
unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
/* Check for bad phandle in list */
+ memset(&args, 0, sizeof(args));
rc = of_parse_phandle_with_args(np, "phandle-list-bad-phandle",
"#phandle-cells", 0, &args);
unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
@@ -452,6 +456,7 @@ static void __init of_unittest_parse_phandle_with_args(void)
unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
/* Check for incorrectly formed argument list */
+ memset(&args, 0, sizeof(args));
rc = of_parse_phandle_with_args(np, "phandle-list-bad-args",
"#phandle-cells", 1, &args);
unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
@@ -502,6 +507,7 @@ static void __init of_unittest_parse_phandle_with_args_map(void)
for (i = 0; i < 8; i++) {
bool passed = true;
+ memset(&args, 0, sizeof(args));
rc = of_parse_phandle_with_args_map(np, "phandle-list",
"phandle", i, &args);
@@ -559,21 +565,25 @@ static void __init of_unittest_parse_phandle_with_args_map(void)
}
/* Check for missing list property */
+ memset(&args, 0, sizeof(args));
rc = of_parse_phandle_with_args_map(np, "phandle-list-missing",
"phandle", 0, &args);
unittest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc);
/* Check for missing cells,map,mask property */
+ memset(&args, 0, sizeof(args));
rc = of_parse_phandle_with_args_map(np, "phandle-list",
"phandle-missing", 0, &args);
unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
/* Check for bad phandle in list */
+ memset(&args, 0, sizeof(args));
rc = of_parse_phandle_with_args_map(np, "phandle-list-bad-phandle",
"phandle", 0, &args);
unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
/* Check for incorrectly formed argument list */
+ memset(&args, 0, sizeof(args));
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);
@@ -783,7 +793,7 @@ static void __init of_unittest_parse_interrupts(void)
for (i = 0; i < 4; i++) {
bool passed = true;
- args.args_count = 0;
+ memset(&args, 0, sizeof(args));
rc = of_irq_parse_one(np, i, &args);
passed &= !rc;
@@ -804,7 +814,7 @@ static void __init of_unittest_parse_interrupts(void)
for (i = 0; i < 4; i++) {
bool passed = true;
- args.args_count = 0;
+ memset(&args, 0, sizeof(args));
rc = of_irq_parse_one(np, i, &args);
/* Test the values from tests-phandle.dtsi */
@@ -860,6 +870,7 @@ static void __init of_unittest_parse_interrupts_extended(void)
for (i = 0; i < 7; i++) {
bool passed = true;
+ memset(&args, 0, sizeof(args));
rc = of_irq_parse_one(np, i, &args);
/* Test the values from tests-phandle.dtsi */
--
2.20.1
^ permalink raw reply related [flat|nested] 4+ messages in thread