diff --git a/drivers/of/Kconfig b/drivers/of/Kconfig
index 783e0870bd225b0fb2b2e9ebc5ff7bd795f17d5c..ad3fcad4d75b8b12a0d6ecbe4d199ad78fc91a11 100644
--- a/drivers/of/Kconfig
+++ b/drivers/of/Kconfig
@@ -92,6 +92,7 @@ config OF_RESOLVE
config OF_OVERLAY
bool "Device Tree overlays"
select OF_DYNAMIC
+ select OF_FLATTREE
select OF_RESOLVE
help
Overlays are a method to dynamically modify part of the kernel's
diff --git a/drivers/of/overlay.c b/drivers/of/overlay.c
index 3397d764295849fa2c0c753c28e036a514171d83..e3d7f69a8333a7c84ac4931ab0781db65b9da23c 100644
--- a/drivers/of/overlay.c
+++ b/drivers/of/overlay.c
@@ -12,10 +12,12 @@
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_device.h>
+#include <linux/of_fdt.h>
#include <linux/string.h>
#include <linux/ctype.h>
#include <linux/errno.h>
#include <linux/slab.h>
+#include <linux/libfdt.h>
#include <linux/err.h>
#include <linux/idr.h>
@@ -33,7 +35,9 @@ struct fragment {
/**
* struct overlay_changeset
+ * @id: changeset identifier
* @ovcs_list: list on which we are located
+ * @fdt: FDT that was unflattened to create @overlay_tree
* @overlay_tree: expanded device tree that contains the fragment nodes
* @count: count of fragment structures
* @fragments: fragment nodes in the overlay expanded device tree
@@ -43,6 +47,7 @@ struct fragment {
struct overlay_changeset {
int id;
struct list_head ovcs_list;
+ const void *fdt;
struct device_node *overlay_tree;
int count;
struct fragment *fragments;
@@ -503,7 +508,8 @@ static struct device_node *find_target_node(struct device_node *info_node)
/**
* init_overlay_changeset() - initialize overlay changeset from overlay tree
- * @ovcs Overlay changeset to build
+ * @ovcs: Overlay changeset to build
+ * @fdt: the FDT that was unflattened to create @tree
* @tree: Contains all the overlay fragments and overlay fixup nodes
*
* Initialize @ovcs. Populate @ovcs->fragments with node information from
@@ -514,7 +520,7 @@ static struct device_node *find_target_node(struct device_node *info_node)
* detected in @tree, or -ENOSPC if idr_alloc() error.
*/
static int init_overlay_changeset(struct overlay_changeset *ovcs,
- struct device_node *tree)
+ const void *fdt, struct device_node *tree)
{
struct device_node *node, *overlay_node;
struct fragment *fragment;
@@ -535,6 +541,7 @@ static int init_overlay_changeset(struct overlay_changeset *ovcs,
pr_debug("%s() tree is not root\n", __func__);
ovcs->overlay_tree = tree;
+ ovcs->fdt = fdt;
INIT_LIST_HEAD(&ovcs->ovcs_list);
@@ -606,6 +613,7 @@ static int init_overlay_changeset(struct overlay_changeset *ovcs,
}
if (!cnt) {
+ pr_err("no fragments or symbols in overlay\n");
ret = -EINVAL;
goto err_free_fragments;
}
@@ -642,11 +650,24 @@ static void free_overlay_changeset(struct overlay_changeset *ovcs)
}
kfree(ovcs->fragments);
+ /*
+ * TODO
+ *
+ * would like to: kfree(ovcs->overlay_tree);
+ * but can not since drivers may have pointers into this data
+ *
+ * would like to: kfree(ovcs->fdt);
+ * but can not since drivers may have pointers into this data
+ */
+
kfree(ovcs);
}
-/**
+/*
+ * internal documentation
+ *
* of_overlay_apply() - Create and apply an overlay changeset
+ * @fdt: the FDT that was unflattened to create @tree
* @tree: Expanded overlay device tree
* @ovcs_id: Pointer to overlay changeset id
*
@@ -685,21 +706,29 @@ static void free_overlay_changeset(struct overlay_changeset *ovcs)
* id is returned to *ovcs_id.
*/
-int of_overlay_apply(struct device_node *tree, int *ovcs_id)
+static int of_overlay_apply(const void *fdt, struct device_node *tree,
+ int *ovcs_id)
{
struct overlay_changeset *ovcs;
int ret = 0, ret_revert, ret_tmp;
- *ovcs_id = 0;
+ /*
+ * As of this point, fdt and tree belong to the overlay changeset.
+ * overlay changeset code is responsible for freeing them.
+ */
if (devicetree_corrupt()) {
pr_err("devicetree state suspect, refuse to apply overlay\n");
+ kfree(fdt);
+ kfree(tree);
ret = -EBUSY;
goto out;
}
ovcs = kzalloc(sizeof(*ovcs), GFP_KERNEL);
if (!ovcs) {
+ kfree(fdt);
+ kfree(tree);
ret = -ENOMEM;
goto out;
}
@@ -709,12 +738,17 @@ int of_overlay_apply(struct device_node *tree, int *ovcs_id)
ret = of_resolve_phandles(tree);
if (ret)
- goto err_free_overlay_changeset;
+ goto err_free_tree;
- ret = init_overlay_changeset(ovcs, tree);
+ ret = init_overlay_changeset(ovcs, fdt, tree);
if (ret)
- goto err_free_overlay_changeset;
+ goto err_free_tree;
+ /*
+ * after overlay_notify(), ovcs->overlay_tree related pointers may have
+ * leaked to drivers, so can not kfree() tree, aka ovcs->overlay_tree;
+ * and can not free fdt, aka ovcs->fdt
+ */
ret = overlay_notify(ovcs, OF_OVERLAY_PRE_APPLY);
if (ret) {
pr_err("overlay changeset pre-apply notify error %d\n", ret);
@@ -754,6 +788,10 @@ int of_overlay_apply(struct device_node *tree, int *ovcs_id)
goto out_unlock;
+err_free_tree:
+ kfree(fdt);
+ kfree(tree);
+
err_free_overlay_changeset:
free_overlay_changeset(ovcs);
@@ -766,7 +804,63 @@ int of_overlay_apply(struct device_node *tree, int *ovcs_id)
return ret;
}
-EXPORT_SYMBOL_GPL(of_overlay_apply);
+
+int of_overlay_fdt_apply(const void *overlay_fdt, u32 overlay_fdt_size,
+ int *ovcs_id)
+{
+ const void *new_fdt;
+ int ret;
+ u32 size;
+ struct device_node *overlay_root;
+
+ *ovcs_id = 0;
+ ret = 0;
+
+ if (overlay_fdt_size < sizeof(struct fdt_header) ||
+ fdt_check_header(overlay_fdt)) {
+ pr_err("Invalid overlay_fdt header\n");
+ return -EINVAL;
+ }
+
+ size = fdt_totalsize(overlay_fdt);
+ if (overlay_fdt_size < size)
+ return -EINVAL;
+
+ /*
+ * Must create permanent copy of FDT because of_fdt_unflatten_tree()
+ * will create pointers to the passed in FDT in the unflattened tree.
+ */
+ new_fdt = kmemdup(overlay_fdt, size, GFP_KERNEL);
+ if (!new_fdt)
+ return -ENOMEM;
+
+ of_fdt_unflatten_tree(new_fdt, NULL, &overlay_root);
+ if (!overlay_root) {
+ pr_err("unable to unflatten overlay_fdt\n");
+ ret = -EINVAL;
+ goto out_free_new_fdt;
+ }
+
+ ret = of_overlay_apply(new_fdt, overlay_root, ovcs_id);
+ if (ret < 0) {
+ /*
+ * new_fdt and overlay_root now belong to the overlay
+ * changeset.
+ * overlay changeset code is responsible for freeing them.
+ */
+ goto out;
+ }
+
+ return 0;
+
+
+out_free_new_fdt:
+ kfree(new_fdt);
+
+out:
+ return ret;
+}
+EXPORT_SYMBOL_GPL(of_overlay_fdt_apply);
/*
* Find @np in @tree.
diff --git a/drivers/of/resolver.c b/drivers/of/resolver.c
index 740d19bde601203eccb9e099d6411cf8380cfe3a..b2f64518721301c78f1703a463488038758ae173 100644
--- a/drivers/of/resolver.c
+++ b/drivers/of/resolver.c
@@ -269,17 +269,11 @@ int of_resolve_phandles(struct device_node *overlay)
goto out;
}
-#if 0
- Temporarily disable check so that old style overlay unittests
- do not fail when of_resolve_phandles() is moved into
- of_overlay_apply().
-
if (!of_node_check_flag(overlay, OF_DETACHED)) {
pr_err("overlay not detached\n");
err = -EINVAL;
goto out;
}
-#endif
phandle_delta = live_tree_max_phandle() + 1;
adjust_overlay_phandles(overlay, phandle_delta);
diff --git a/drivers/of/unittest-data/Makefile b/drivers/of/unittest-data/Makefile
index df697976740ad82fe1b32d852fb4df1e3405fe82..8fd0ea4b92b08558bb302d01b59a9f8cf118d0ff 100644
--- a/drivers/of/unittest-data/Makefile
+++ b/drivers/of/unittest-data/Makefile
@@ -1,8 +1,22 @@
# SPDX-License-Identifier: GPL-2.0
-DTC_FLAGS_testcases := -Wno-interrupts_property
obj-y += testcases.dtb.o
obj-$(CONFIG_OF_OVERLAY) += overlay.dtb.o \
+ overlay_0.dtb.o \
+ overlay_1.dtb.o \
+ overlay_2.dtb.o \
+ overlay_3.dtb.o \
+ overlay_4.dtb.o \
+ overlay_5.dtb.o \
+ overlay_6.dtb.o \
+ overlay_7.dtb.o \
+ overlay_8.dtb.o \
+ overlay_9.dtb.o \
+ overlay_10.dtb.o \
+ overlay_11.dtb.o \
+ overlay_12.dtb.o \
+ overlay_13.dtb.o \
+ overlay_15.dtb.o \
overlay_bad_phandle.dtb.o \
overlay_bad_symbol.dtb.o \
overlay_base.dtb.o
@@ -10,10 +24,14 @@ obj-$(CONFIG_OF_OVERLAY) += overlay.dtb.o \
targets += $(foreach suffix, dtb dtb.S, $(patsubst %.dtb.o,%.$(suffix),$(obj-y)))
# enable creation of __symbols__ node
-DTC_FLAGS_overlay := -@
-DTC_FLAGS_overlay_bad_phandle := -@
-DTC_FLAGS_overlay_bad_symbol := -@
-DTC_FLAGS_overlay_base := -@
+DTC_FLAGS_overlay += -@
+DTC_FLAGS_overlay_bad_phandle += -@
+DTC_FLAGS_overlay_bad_symbol += -@
+DTC_FLAGS_overlay_base += -@
+DTC_FLAGS_testcases += -@
+
+# suppress warnings about intentional errors
+DTC_FLAGS_testcases += -Wno-interrupts_property
.PRECIOUS: \
$(obj)/%.dtb.S \
diff --git a/drivers/of/unittest-data/overlay_0.dts b/drivers/of/unittest-data/overlay_0.dts
new file mode 100644
index 0000000000000000000000000000000000000000..ac0f9e0fe65f80f3619fe2bb70c3c02e12ec7b91
--- /dev/null
+++ b/drivers/of/unittest-data/overlay_0.dts
@@ -0,0 +1,14 @@
+// SPDX-License-Identifier: GPL-2.0
+/dts-v1/;
+/plugin/;
+
+/ {
+ /* overlay_0 - enable using absolute target path */
+
+ fragment@0 {
+ target-path = "/testcase-data/overlay-node/test-bus/test-unittest0";
+ __overlay__ {
+ status = "okay";
+ };
+ };
+};
diff --git a/drivers/of/unittest-data/overlay_1.dts b/drivers/of/unittest-data/overlay_1.dts
new file mode 100644
index 0000000000000000000000000000000000000000..e92a626e29483a32fd3175fd030222e3d01614ae
--- /dev/null
+++ b/drivers/of/unittest-data/overlay_1.dts
@@ -0,0 +1,14 @@
+// SPDX-License-Identifier: GPL-2.0
+/dts-v1/;
+/plugin/;
+
+/ {
+ /* overlay_1 - disable using absolute target path */
+
+ fragment@0 {
+ target-path = "/testcase-data/overlay-node/test-bus/test-unittest1";
+ __overlay__ {
+ status = "disabled";
+ };
+ };
+};
diff --git a/drivers/of/unittest-data/overlay_10.dts b/drivers/of/unittest-data/overlay_10.dts
new file mode 100644
index 0000000000000000000000000000000000000000..445925a10cd3daff49d55241331f1a4a8bee3fbb
--- /dev/null
+++ b/drivers/of/unittest-data/overlay_10.dts
@@ -0,0 +1,34 @@
+// SPDX-License-Identifier: GPL-2.0
+/dts-v1/;
+/plugin/;
+
+/ {
+ /* overlay_10 */
+ /* overlays 8, 9, 10, 11 application and removal in bad sequence */
+
+ fragment@0 {
+ target-path = "/testcase-data/overlay-node/test-bus";
+ __overlay__ {
+
+ /* suppress DTC warning */
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ test-unittest10 {
+ compatible = "unittest";
+ status = "okay";
+ reg = <10>;
+
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ test-unittest101 {
+ compatible = "unittest";
+ status = "okay";
+ reg = <1>;
+ };
+
+ };
+ };
+ };
+};
diff --git a/drivers/of/unittest-data/overlay_11.dts b/drivers/of/unittest-data/overlay_11.dts
new file mode 100644
index 0000000000000000000000000000000000000000..c1d14f34359e3a4759b2717eafe88756afb3c57c
--- /dev/null
+++ b/drivers/of/unittest-data/overlay_11.dts
@@ -0,0 +1,34 @@
+// SPDX-License-Identifier: GPL-2.0
+/dts-v1/;
+/plugin/;
+
+/ {
+ /* overlay_11 */
+ /* overlays 8, 9, 10, 11 application and removal in bad sequence */
+
+ fragment@0 {
+ target-path = "/testcase-data/overlay-node/test-bus";
+ __overlay__ {
+
+ /* suppress DTC warning */
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ test-unittest11 {
+ compatible = "unittest";
+ status = "okay";
+ reg = <11>;
+
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ test-unittest111 {
+ compatible = "unittest";
+ status = "okay";
+ reg = <1>;
+ };
+
+ };
+ };
+ };
+};
diff --git a/drivers/of/unittest-data/overlay_12.dts b/drivers/of/unittest-data/overlay_12.dts
new file mode 100644
index 0000000000000000000000000000000000000000..ca3441e2cbec94ce143547564f631a0e2a8c5a9f
--- /dev/null
+++ b/drivers/of/unittest-data/overlay_12.dts
@@ -0,0 +1,14 @@
+// SPDX-License-Identifier: GPL-2.0
+/dts-v1/;
+/plugin/;
+
+/ {
+ /* overlay_12 - enable using absolute target path (i2c) */
+
+ fragment@0 {
+ target-path = "/testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest12";
+ __overlay__ {
+ status = "okay";
+ };
+ };
+};
diff --git a/drivers/of/unittest-data/overlay_13.dts b/drivers/of/unittest-data/overlay_13.dts
new file mode 100644
index 0000000000000000000000000000000000000000..3c30dec6389436dfd82075e373670ccea3dfa700
--- /dev/null
+++ b/drivers/of/unittest-data/overlay_13.dts
@@ -0,0 +1,14 @@
+// SPDX-License-Identifier: GPL-2.0
+/dts-v1/;
+/plugin/;
+
+/ {
+ /* overlay_13 - disable using absolute target path (i2c) */
+
+ fragment@0 {
+ target-path = "/testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest13";
+ __overlay__ {
+ status = "disabled";
+ };
+ };
+};
diff --git a/drivers/of/unittest-data/overlay_15.dts b/drivers/of/unittest-data/overlay_15.dts
new file mode 100644
index 0000000000000000000000000000000000000000..44e44c62b739dc6fbae65b225f67c983bb32bd5c
--- /dev/null
+++ b/drivers/of/unittest-data/overlay_15.dts
@@ -0,0 +1,35 @@
+// SPDX-License-Identifier: GPL-2.0
+/dts-v1/;
+/plugin/;
+
+/ {
+ /* overlay_15 - mux overlay */
+
+ fragment@0 {
+ target-path = "/testcase-data/overlay-node/test-bus/i2c-test-bus";
+ __overlay__ {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ test-unittest15 {
+ reg = <11>;
+ compatible = "unittest-i2c-mux";
+ status = "okay";
+
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ i2c@0 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <0>;
+
+ test-mux-dev {
+ reg = <32>;
+ compatible = "unittest-i2c-dev";
+ status = "okay";
+ };
+ };
+ };
+ };
+ };
+};
diff --git a/drivers/of/unittest-data/overlay_2.dts b/drivers/of/unittest-data/overlay_2.dts
new file mode 100644
index 0000000000000000000000000000000000000000..cf1e4245b7ce5e1a44daf4a96f2912124e6bbdda
--- /dev/null
+++ b/drivers/of/unittest-data/overlay_2.dts
@@ -0,0 +1,14 @@
+// SPDX-License-Identifier: GPL-2.0
+/dts-v1/;
+/plugin/;
+
+/ {
+ /* overlay_2 - enable using label */
+
+ fragment@0 {
+ target = <&unittest2>;
+ __overlay__ {
+ status = "okay";
+ };
+ };
+};
diff --git a/drivers/of/unittest-data/overlay_3.dts b/drivers/of/unittest-data/overlay_3.dts
new file mode 100644
index 0000000000000000000000000000000000000000..158dc44fc20a7af8196b5f9448a99ac5d4e58f56
--- /dev/null
+++ b/drivers/of/unittest-data/overlay_3.dts
@@ -0,0 +1,14 @@
+// SPDX-License-Identifier: GPL-2.0
+/dts-v1/;
+/plugin/;
+
+/ {
+ /* overlay_3 - disable using label */
+
+ fragment@0 {
+ target = <&unittest3>;
+ __overlay__ {
+ status = "disabled";
+ };
+ };
+};
diff --git a/drivers/of/unittest-data/overlay_4.dts b/drivers/of/unittest-data/overlay_4.dts
new file mode 100644
index 0000000000000000000000000000000000000000..b4a2e6c6b0166e35f97120e4d45100e16dc68e7c
--- /dev/null
+++ b/drivers/of/unittest-data/overlay_4.dts
@@ -0,0 +1,23 @@
+// SPDX-License-Identifier: GPL-2.0
+/dts-v1/;
+/plugin/;
+
+/ {
+ /* overlay_4 - test insertion of a full node */
+
+ fragment@0 {
+ target = <&unittestbus>;
+ __overlay__ {
+
+ /* suppress DTC warning */
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ test-unittest4 {
+ compatible = "unittest";
+ status = "okay";
+ reg = <4>;
+ };
+ };
+ };
+};
diff --git a/drivers/of/unittest-data/overlay_5.dts b/drivers/of/unittest-data/overlay_5.dts
new file mode 100644
index 0000000000000000000000000000000000000000..02ad25c1f19c347171b89f80384727337f006e10
--- /dev/null
+++ b/drivers/of/unittest-data/overlay_5.dts
@@ -0,0 +1,14 @@
+// SPDX-License-Identifier: GPL-2.0
+/dts-v1/;
+/plugin/;
+
+/ {
+ /* overlay_5 - test overlay apply revert */
+
+ fragment@0 {
+ target-path = "/testcase-data/overlay-node/test-bus/test-unittest5";
+ __overlay__ {
+ status = "okay";
+ };
+ };
+};
diff --git a/drivers/of/unittest-data/overlay_6.dts b/drivers/of/unittest-data/overlay_6.dts
new file mode 100644
index 0000000000000000000000000000000000000000..a14e965f5497761d8a7b8ad10bd83836bf958a2b
--- /dev/null
+++ b/drivers/of/unittest-data/overlay_6.dts
@@ -0,0 +1,15 @@
+// SPDX-License-Identifier: GPL-2.0
+/dts-v1/;
+/plugin/;
+
+/ {
+ /* overlay_6 */
+ /* overlays 6, 7 application and removal in sequence */
+
+ fragment@0 {
+ target-path = "/testcase-data/overlay-node/test-bus/test-unittest6";
+ __overlay__ {
+ status = "okay";
+ };
+ };
+};
diff --git a/drivers/of/unittest-data/overlay_7.dts b/drivers/of/unittest-data/overlay_7.dts
new file mode 100644
index 0000000000000000000000000000000000000000..4bd7e423209c05af0f37abd346cdab31c5554aa2
--- /dev/null
+++ b/drivers/of/unittest-data/overlay_7.dts
@@ -0,0 +1,15 @@
+// SPDX-License-Identifier: GPL-2.0
+/dts-v1/;
+/plugin/;
+
+/ {
+ /* overlay_7 */
+ /* overlays 6, 7 application and removal in sequence */
+
+ fragment@0 {
+ target-path = "/testcase-data/overlay-node/test-bus/test-unittest7";
+ __overlay__ {
+ status = "okay";
+ };
+ };
+};
diff --git a/drivers/of/unittest-data/overlay_8.dts b/drivers/of/unittest-data/overlay_8.dts
new file mode 100644
index 0000000000000000000000000000000000000000..5b21c53945a9497b235d94a17ca5bcc2e900016d
--- /dev/null
+++ b/drivers/of/unittest-data/overlay_8.dts
@@ -0,0 +1,15 @@
+// SPDX-License-Identifier: GPL-2.0
+/dts-v1/;
+/plugin/;
+
+/ {
+ /* overlay_8 */
+ /* overlays 8, 9, 10, 11 application and removal in bad sequence */
+
+ fragment@0 {
+ target-path = "/testcase-data/overlay-node/test-bus/test-unittest8";
+ __overlay__ {
+ status = "okay";
+ };
+ };
+};
diff --git a/drivers/of/unittest-data/overlay_9.dts b/drivers/of/unittest-data/overlay_9.dts
new file mode 100644
index 0000000000000000000000000000000000000000..20ff055a53495ddbcb75123ce9f70dae3fcb86d7
--- /dev/null
+++ b/drivers/of/unittest-data/overlay_9.dts
@@ -0,0 +1,15 @@
+// SPDX-License-Identifier: GPL-2.0
+/dts-v1/;
+/plugin/;
+
+/ {
+ /* overlay_9 */
+ /* overlays 8, 9, 10, 11 application and removal in bad sequence */
+
+ fragment@0 {
+ target-path = "/testcase-data/overlay-node/test-bus/test-unittest8";
+ __overlay__ {
+ property-foo = "bar";
+ };
+ };
+};
diff --git a/drivers/of/unittest-data/tests-overlay.dtsi b/drivers/of/unittest-data/tests-overlay.dtsi
index 7b8001ab9f3a7318895bede385787ca136c1258c..fa2fb43bccac3be9a5c5961a205f051d9e13c07d 100644
--- a/drivers/of/unittest-data/tests-overlay.dtsi
+++ b/drivers/of/unittest-data/tests-overlay.dtsi
@@ -113,218 +113,5 @@
};
};
};
-
- /* test enable using absolute target path */
- overlay0 {
- fragment@0 {
- target-path = "/testcase-data/overlay-node/test-bus/test-unittest0";
- __overlay__ {
- status = "okay";
- };
- };
- };
-
- /* test disable using absolute target path */
- overlay1 {
- fragment@0 {
- target-path = "/testcase-data/overlay-node/test-bus/test-unittest1";
- __overlay__ {
- status = "disabled";
- };
- };
- };
-
- /* test enable using label */
- overlay2 {
- fragment@0 {
- target = <&unittest2>;
- __overlay__ {
- status = "okay";
- };
- };
- };
-
- /* test disable using label */
- overlay3 {
- fragment@0 {
- target = <&unittest3>;
- __overlay__ {
- status = "disabled";
- };
- };
- };
-
- /* test insertion of a full node */
- overlay4 {
- fragment@0 {
- target = <&unittestbus>;
- __overlay__ {
-
- /* suppress DTC warning */
- #address-cells = <1>;
- #size-cells = <0>;
-
- test-unittest4 {
- compatible = "unittest";
- status = "okay";
- reg = <4>;
- };
- };
- };
- };
-
- /* test overlay apply revert */
- overlay5 {
- fragment@0 {
- target-path = "/testcase-data/overlay-node/test-bus/test-unittest5";
- __overlay__ {
- status = "okay";
- };
- };
- };
-
- /* test overlays application and removal in sequence */
- overlay6 {
- fragment@0 {
- target-path = "/testcase-data/overlay-node/test-bus/test-unittest6";
- __overlay__ {
- status = "okay";
- };
- };
- };
- overlay7 {
- fragment@0 {
- target-path = "/testcase-data/overlay-node/test-bus/test-unittest7";
- __overlay__ {
- status = "okay";
- };
- };
- };
-
- /* test overlays application and removal in bad sequence */
- overlay8 {
- fragment@0 {
- target-path = "/testcase-data/overlay-node/test-bus/test-unittest8";
- __overlay__ {
- status = "okay";
- };
- };
- };
- overlay9 {
- fragment@0 {
- target-path = "/testcase-data/overlay-node/test-bus/test-unittest8";
- __overlay__ {
- property-foo = "bar";
- };
- };
- };
-
- overlay10 {
- fragment@0 {
- target-path = "/testcase-data/overlay-node/test-bus";
- __overlay__ {
-
- /* suppress DTC warning */
- #address-cells = <1>;
- #size-cells = <0>;
-
- test-unittest10 {
- compatible = "unittest";
- status = "okay";
- reg = <10>;
-
- #address-cells = <1>;
- #size-cells = <0>;
-
- test-unittest101 {
- compatible = "unittest";
- status = "okay";
- reg = <1>;
- };
-
- };
- };
- };
- };
-
- overlay11 {
- fragment@0 {
- target-path = "/testcase-data/overlay-node/test-bus";
- __overlay__ {
-
- /* suppress DTC warning */
- #address-cells = <1>;
- #size-cells = <0>;
-
- test-unittest11 {
- compatible = "unittest";
- status = "okay";
- reg = <11>;
-
- #address-cells = <1>;
- #size-cells = <0>;
-
- test-unittest111 {
- compatible = "unittest";
- status = "okay";
- reg = <1>;
- };
-
- };
- };
- };
- };
-
- /* test enable using absolute target path (i2c) */
- overlay12 {
- fragment@0 {
- target-path = "/testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest12";
- __overlay__ {
- status = "okay";
- };
- };
- };
-
- /* test disable using absolute target path (i2c) */
- overlay13 {
- fragment@0 {
- target-path = "/testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest13";
- __overlay__ {
- status = "disabled";
- };
- };
- };
-
- /* test mux overlay */
- overlay15 {
- fragment@0 {
- target-path = "/testcase-data/overlay-node/test-bus/i2c-test-bus";
- __overlay__ {
- #address-cells = <1>;
- #size-cells = <0>;
- test-unittest15 {
- reg = <11>;
- compatible = "unittest-i2c-mux";
- status = "okay";
-
- #address-cells = <1>;
- #size-cells = <0>;
-
- i2c@0 {
- #address-cells = <1>;
- #size-cells = <0>;
- reg = <0>;
-
- test-mux-dev {
- reg = <32>;
- compatible = "unittest-i2c-dev";
- status = "okay";
- };
- };
- };
- };
- };
- };
-
};
};
diff --git a/drivers/of/unittest.c b/drivers/of/unittest.c
index 7a9abaae874d5446cf31b96f7f819f83acfad1ef..a23b54780c7dff05593a207ca30fd3b3c2d6e42e 100644
--- a/drivers/of/unittest.c
+++ b/drivers/of/unittest.c
@@ -45,6 +45,8 @@ static struct unittest_results {
failed; \
})
+static int __init overlay_data_apply(const char *overlay_name, int *overlay_id);
+
static void __init of_unittest_find_node_by_name(void)
{
struct device_node *np;
@@ -997,8 +999,7 @@ static int __init unittest_data_add(void)
}
/*
- * This lock normally encloses of_overlay_apply() as well as
- * of_resolve_phandles().
+ * This lock normally encloses of_resolve_phandles()
*/
of_overlay_mutex_lock();
@@ -1191,12 +1192,12 @@ static int of_unittest_device_exists(int unittest_nr, enum overlay_type ovtype)
return 0;
}
-static const char *overlay_path(int nr)
+static const char *overlay_name_from_nr(int nr)
{
static char buf[256];
snprintf(buf, sizeof(buf) - 1,
- "/testcase-data/overlay%d", nr);
+ "overlay_%d", nr);
buf[sizeof(buf) - 1] = '\0';
return buf;
@@ -1263,25 +1264,19 @@ static void of_unittest_destroy_tracked_overlays(void)
} while (defers > 0);
}
-static int of_unittest_apply_overlay(int overlay_nr, int unittest_nr,
+static int __init of_unittest_apply_overlay(int overlay_nr, int unittest_nr,
int *overlay_id)
{
struct device_node *np = NULL;
+ const char *overlay_name;
int ret;
- np = of_find_node_by_path(overlay_path(overlay_nr));
- if (np == NULL) {
- unittest(0, "could not find overlay node @\"%s\"\n",
- overlay_path(overlay_nr));
- ret = -EINVAL;
- goto out;
- }
+ overlay_name = overlay_name_from_nr(overlay_nr);
- *overlay_id = 0;
- ret = of_overlay_apply(np, overlay_id);
- if (ret < 0) {
- unittest(0, "could not create overlay from \"%s\"\n",
- overlay_path(overlay_nr));
+ ret = overlay_data_apply(overlay_name, overlay_id);
+ if (!ret) {
+ unittest(0, "could not apply overlay \"%s\"\n",
+ overlay_name);
goto out;
}
of_unittest_track_overlay(*overlay_id);
@@ -1295,15 +1290,16 @@ static int of_unittest_apply_overlay(int overlay_nr, int unittest_nr,
}
/* apply an overlay while checking before and after states */
-static int of_unittest_apply_overlay_check(int overlay_nr, int unittest_nr,
- int before, int after, enum overlay_type ovtype)
+static int __init of_unittest_apply_overlay_check(int overlay_nr,
+ int unittest_nr, int before, int after,
+ enum overlay_type ovtype)
{
int ret, ovcs_id;
/* unittest device must not be in before state */
if (of_unittest_device_exists(unittest_nr, ovtype) != before) {
- unittest(0, "overlay @\"%s\" with device @\"%s\" %s\n",
- overlay_path(overlay_nr),
+ unittest(0, "%s with device @\"%s\" %s\n",
+ overlay_name_from_nr(overlay_nr),
unittest_path(unittest_nr, ovtype),
!before ? "enabled" : "disabled");
return -EINVAL;
@@ -1318,8 +1314,8 @@ static int of_unittest_apply_overlay_check(int overlay_nr, int unittest_nr,
/* unittest device must be to set to after state */
if (of_unittest_device_exists(unittest_nr, ovtype) != after) {
- unittest(0, "overlay @\"%s\" failed to create @\"%s\" %s\n",
- overlay_path(overlay_nr),
+ unittest(0, "%s failed to create @\"%s\" %s\n",
+ overlay_name_from_nr(overlay_nr),
unittest_path(unittest_nr, ovtype),
!after ? "enabled" : "disabled");
return -EINVAL;
@@ -1329,7 +1325,7 @@ static int of_unittest_apply_overlay_check(int overlay_nr, int unittest_nr,
}
/* apply an overlay and then revert it while checking before, after states */
-static int of_unittest_apply_revert_overlay_check(int overlay_nr,
+static int __init of_unittest_apply_revert_overlay_check(int overlay_nr,
int unittest_nr, int before, int after,
enum overlay_type ovtype)
{
@@ -1337,8 +1333,8 @@ static int of_unittest_apply_revert_overlay_check(int overlay_nr,
/* unittest device must be in before state */
if (of_unittest_device_exists(unittest_nr, ovtype) != before) {
- unittest(0, "overlay @\"%s\" with device @\"%s\" %s\n",
- overlay_path(overlay_nr),
+ unittest(0, "%s with device @\"%s\" %s\n",
+ overlay_name_from_nr(overlay_nr),
unittest_path(unittest_nr, ovtype),
!before ? "enabled" : "disabled");
return -EINVAL;
@@ -1354,8 +1350,8 @@ static int of_unittest_apply_revert_overlay_check(int overlay_nr,
/* unittest device must be in after state */
if (of_unittest_device_exists(unittest_nr, ovtype) != after) {
- unittest(0, "overlay @\"%s\" failed to create @\"%s\" %s\n",
- overlay_path(overlay_nr),
+ unittest(0, "%s failed to create @\"%s\" %s\n",
+ overlay_name_from_nr(overlay_nr),
unittest_path(unittest_nr, ovtype),
!after ? "enabled" : "disabled");
return -EINVAL;
@@ -1363,16 +1359,16 @@ static int of_unittest_apply_revert_overlay_check(int overlay_nr,
ret = of_overlay_remove(&ovcs_id);
if (ret != 0) {
- unittest(0, "overlay @\"%s\" failed to be destroyed @\"%s\"\n",
- overlay_path(overlay_nr),
+ unittest(0, "%s failed to be destroyed @\"%s\"\n",
+ overlay_name_from_nr(overlay_nr),
unittest_path(unittest_nr, ovtype));
return ret;
}
/* unittest device must be again in before state */
if (of_unittest_device_exists(unittest_nr, PDEV_OVERLAY) != before) {
- unittest(0, "overlay @\"%s\" with device @\"%s\" %s\n",
- overlay_path(overlay_nr),
+ unittest(0, "%s with device @\"%s\" %s\n",
+ overlay_name_from_nr(overlay_nr),
unittest_path(unittest_nr, ovtype),
!before ? "enabled" : "disabled");
return -EINVAL;
@@ -1382,7 +1378,7 @@ static int of_unittest_apply_revert_overlay_check(int overlay_nr,
}
/* test activation of device */
-static void of_unittest_overlay_0(void)
+static void __init of_unittest_overlay_0(void)
{
int ret;
@@ -1395,7 +1391,7 @@ static void of_unittest_overlay_0(void)
}
/* test deactivation of device */
-static void of_unittest_overlay_1(void)
+static void __init of_unittest_overlay_1(void)
{
int ret;
@@ -1408,7 +1404,7 @@ static void of_unittest_overlay_1(void)
}
/* test activation of device */
-static void of_unittest_overlay_2(void)
+static void __init of_unittest_overlay_2(void)
{
int ret;
@@ -1421,7 +1417,7 @@ static void of_unittest_overlay_2(void)
}
/* test deactivation of device */
-static void of_unittest_overlay_3(void)
+static void __init of_unittest_overlay_3(void)
{
int ret;
@@ -1434,7 +1430,7 @@ static void of_unittest_overlay_3(void)
}
/* test activation of a full device node */
-static void of_unittest_overlay_4(void)
+static void __init of_unittest_overlay_4(void)
{
int ret;
@@ -1447,7 +1443,7 @@ static void of_unittest_overlay_4(void)
}
/* test overlay apply/revert sequence */
-static void of_unittest_overlay_5(void)
+static void __init of_unittest_overlay_5(void)
{
int ret;
@@ -1460,19 +1456,19 @@ static void of_unittest_overlay_5(void)
}
/* test overlay application in sequence */
-static void of_unittest_overlay_6(void)
+static void __init of_unittest_overlay_6(void)
{
- struct device_node *np;
int ret, i, ov_id[2], ovcs_id;
int overlay_nr = 6, unittest_nr = 6;
int before = 0, after = 1;
+ const char *overlay_name;
/* unittest device must be in before state */
for (i = 0; i < 2; i++) {
if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY)
!= before) {
- unittest(0, "overlay @\"%s\" with device @\"%s\" %s\n",
- overlay_path(overlay_nr + i),
+ unittest(0, "%s with device @\"%s\" %s\n",
+ overlay_name_from_nr(overlay_nr + i),
unittest_path(unittest_nr + i,
PDEV_OVERLAY),
!before ? "enabled" : "disabled");
@@ -1483,18 +1479,12 @@ static void of_unittest_overlay_6(void)
/* apply the overlays */
for (i = 0; i < 2; i++) {
- np = of_find_node_by_path(overlay_path(overlay_nr + i));
- if (np == NULL) {
- unittest(0, "could not find overlay node @\"%s\"\n",
- overlay_path(overlay_nr + i));
- return;
- }
+ overlay_name = overlay_name_from_nr(overlay_nr + i);
- ovcs_id = 0;
- ret = of_overlay_apply(np, &ovcs_id);
- if (ret < 0) {
- unittest(0, "could not create overlay from \"%s\"\n",
- overlay_path(overlay_nr + i));
+ ret = overlay_data_apply(overlay_name, &ovcs_id);
+ if (!ret) {
+ unittest(0, "could not apply overlay \"%s\"\n",
+ overlay_name);
return;
}
ov_id[i] = ovcs_id;
@@ -1506,7 +1496,7 @@ static void of_unittest_overlay_6(void)
if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY)
!= after) {
unittest(0, "overlay @\"%s\" failed @\"%s\" %s\n",
- overlay_path(overlay_nr + i),
+ overlay_name_from_nr(overlay_nr + i),
unittest_path(unittest_nr + i,
PDEV_OVERLAY),
!after ? "enabled" : "disabled");
@@ -1518,8 +1508,8 @@ static void of_unittest_overlay_6(void)
ovcs_id = ov_id[i];
ret = of_overlay_remove(&ovcs_id);
if (ret != 0) {
- unittest(0, "overlay @\"%s\" failed destroy @\"%s\"\n",
- overlay_path(overlay_nr + i),
+ unittest(0, "%s failed destroy @\"%s\"\n",
+ overlay_name_from_nr(overlay_nr + i),
unittest_path(unittest_nr + i,
PDEV_OVERLAY));
return;
@@ -1531,8 +1521,8 @@ static void of_unittest_overlay_6(void)
/* unittest device must be again in before state */
if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY)
!= before) {
- unittest(0, "overlay @\"%s\" with device @\"%s\" %s\n",
- overlay_path(overlay_nr + i),
+ unittest(0, "%s with device @\"%s\" %s\n",
+ overlay_name_from_nr(overlay_nr + i),
unittest_path(unittest_nr + i,
PDEV_OVERLAY),
!before ? "enabled" : "disabled");
@@ -1544,29 +1534,23 @@ static void of_unittest_overlay_6(void)
}
/* test overlay application in sequence */
-static void of_unittest_overlay_8(void)
+static void __init of_unittest_overlay_8(void)
{
- struct device_node *np;
int ret, i, ov_id[2], ovcs_id;
int overlay_nr = 8, unittest_nr = 8;
+ const char *overlay_name;
/* we don't care about device state in this test */
/* apply the overlays */
for (i = 0; i < 2; i++) {
- np = of_find_node_by_path(overlay_path(overlay_nr + i));
- if (np == NULL) {
- unittest(0, "could not find overlay node @\"%s\"\n",
- overlay_path(overlay_nr + i));
- return;
- }
+ overlay_name = overlay_name_from_nr(overlay_nr + i);
- ovcs_id = 0;
- ret = of_overlay_apply(np, &ovcs_id);
+ ret = overlay_data_apply(overlay_name, &ovcs_id);
if (ret < 0) {
- unittest(0, "could not create overlay from \"%s\"\n",
- overlay_path(overlay_nr + i));
+ unittest(0, "could not apply overlay \"%s\"\n",
+ overlay_name);
return;
}
ov_id[i] = ovcs_id;
@@ -1577,8 +1561,8 @@ static void of_unittest_overlay_8(void)
ovcs_id = ov_id[0];
ret = of_overlay_remove(&ovcs_id);
if (ret == 0) {
- unittest(0, "overlay @\"%s\" was destroyed @\"%s\"\n",
- overlay_path(overlay_nr + 0),
+ unittest(0, "%s was destroyed @\"%s\"\n",
+ overlay_name_from_nr(overlay_nr + 0),
unittest_path(unittest_nr,
PDEV_OVERLAY));
return;
@@ -1589,8 +1573,8 @@ static void of_unittest_overlay_8(void)
ovcs_id = ov_id[i];
ret = of_overlay_remove(&ovcs_id);
if (ret != 0) {
- unittest(0, "overlay @\"%s\" not destroyed @\"%s\"\n",
- overlay_path(overlay_nr + i),
+ unittest(0, "%s not destroyed @\"%s\"\n",
+ overlay_name_from_nr(overlay_nr + i),
unittest_path(unittest_nr,
PDEV_OVERLAY));
return;
@@ -1602,7 +1586,7 @@ static void of_unittest_overlay_8(void)
}
/* test insertion of a bus with parent devices */
-static void of_unittest_overlay_10(void)
+static void __init of_unittest_overlay_10(void)
{
int ret;
char *child_path;
@@ -1625,7 +1609,7 @@ static void of_unittest_overlay_10(void)
}
/* test insertion of a bus with parent devices (and revert) */
-static void of_unittest_overlay_11(void)
+static void __init of_unittest_overlay_11(void)
{
int ret;
@@ -1891,7 +1875,7 @@ static void of_unittest_overlay_i2c_cleanup(void)
i2c_del_driver(&unittest_i2c_dev_driver);
}
-static void of_unittest_overlay_i2c_12(void)
+static void __init of_unittest_overlay_i2c_12(void)
{
int ret;
@@ -1904,7 +1888,7 @@ static void of_unittest_overlay_i2c_12(void)
}
/* test deactivation of device */
-static void of_unittest_overlay_i2c_13(void)
+static void __init of_unittest_overlay_i2c_13(void)
{
int ret;
@@ -1921,7 +1905,7 @@ static void of_unittest_overlay_i2c_14(void)
{
}
-static void of_unittest_overlay_i2c_15(void)
+static void __init of_unittest_overlay_i2c_15(void)
{
int ret;
@@ -2023,23 +2007,38 @@ static inline void __init of_unittest_overlay(void) { }
extern uint8_t __dtb_##name##_begin[]; \
extern uint8_t __dtb_##name##_end[]
-#define OVERLAY_INFO(name, expected) \
-{ .dtb_begin = __dtb_##name##_begin, \
- .dtb_end = __dtb_##name##_end, \
- .expected_result = expected, \
+#define OVERLAY_INFO(overlay_name, expected) \
+{ .dtb_begin = __dtb_##overlay_name##_begin, \
+ .dtb_end = __dtb_##overlay_name##_end, \
+ .expected_result = expected, \
+ .name = #overlay_name, \
}
struct overlay_info {
- uint8_t *dtb_begin;
- uint8_t *dtb_end;
- void *data;
- struct device_node *np_overlay;
- int expected_result;
- int overlay_id;
+ uint8_t *dtb_begin;
+ uint8_t *dtb_end;
+ int expected_result;
+ int overlay_id;
+ char *name;
};
OVERLAY_INFO_EXTERN(overlay_base);
OVERLAY_INFO_EXTERN(overlay);
+OVERLAY_INFO_EXTERN(overlay_0);
+OVERLAY_INFO_EXTERN(overlay_1);
+OVERLAY_INFO_EXTERN(overlay_2);
+OVERLAY_INFO_EXTERN(overlay_3);
+OVERLAY_INFO_EXTERN(overlay_4);
+OVERLAY_INFO_EXTERN(overlay_5);
+OVERLAY_INFO_EXTERN(overlay_6);
+OVERLAY_INFO_EXTERN(overlay_7);
+OVERLAY_INFO_EXTERN(overlay_8);
+OVERLAY_INFO_EXTERN(overlay_9);
+OVERLAY_INFO_EXTERN(overlay_10);
+OVERLAY_INFO_EXTERN(overlay_11);
+OVERLAY_INFO_EXTERN(overlay_12);
+OVERLAY_INFO_EXTERN(overlay_13);
+OVERLAY_INFO_EXTERN(overlay_15);
OVERLAY_INFO_EXTERN(overlay_bad_phandle);
OVERLAY_INFO_EXTERN(overlay_bad_symbol);
@@ -2047,6 +2046,21 @@ OVERLAY_INFO_EXTERN(overlay_bad_symbol);
static struct overlay_info overlays[] = {
OVERLAY_INFO(overlay_base, -9999),
OVERLAY_INFO(overlay, 0),
+ OVERLAY_INFO(overlay_0, 0),
+ OVERLAY_INFO(overlay_1, 0),
+ OVERLAY_INFO(overlay_2, 0),
+ OVERLAY_INFO(overlay_3, 0),
+ OVERLAY_INFO(overlay_4, 0),
+ OVERLAY_INFO(overlay_5, 0),
+ OVERLAY_INFO(overlay_6, 0),
+ OVERLAY_INFO(overlay_7, 0),
+ OVERLAY_INFO(overlay_8, 0),
+ OVERLAY_INFO(overlay_9, 0),
+ OVERLAY_INFO(overlay_10, 0),
+ OVERLAY_INFO(overlay_11, 0),
+ OVERLAY_INFO(overlay_12, 0),
+ OVERLAY_INFO(overlay_13, 0),
+ OVERLAY_INFO(overlay_15, 0),
OVERLAY_INFO(overlay_bad_phandle, -EINVAL),
OVERLAY_INFO(overlay_bad_symbol, -EINVAL),
{}
@@ -2077,6 +2091,7 @@ void __init unittest_unflatten_overlay_base(void)
{
struct overlay_info *info;
u32 data_size;
+ void *new_fdt;
u32 size;
info = &overlays[0];
@@ -2098,17 +2113,16 @@ void __init unittest_unflatten_overlay_base(void)
return;
}
- info->data = dt_alloc_memory(size, roundup_pow_of_two(FDT_V17_SIZE));
- if (!info->data) {
+ new_fdt = dt_alloc_memory(size, roundup_pow_of_two(FDT_V17_SIZE));
+ if (!new_fdt) {
pr_err("alloc for dtb 'overlay_base' failed");
return;
}
- memcpy(info->data, info->dtb_begin, size);
+ memcpy(new_fdt, info->dtb_begin, size);
- __unflatten_device_tree(info->data, NULL, &info->np_overlay,
+ __unflatten_device_tree(new_fdt, NULL, &overlay_base_root,
dt_alloc_memory, true);
- overlay_base_root = info->np_overlay;
}
/*
@@ -2122,73 +2136,44 @@ void __init unittest_unflatten_overlay_base(void)
*
* Return 0 on unexpected error.
*/
-static int __init overlay_data_add(int onum)
+static int __init overlay_data_apply(const char *overlay_name, int *overlay_id)
{
struct overlay_info *info;
+ int found = 0;
int k;
int ret;
u32 size;
- u32 size_from_header;
- for (k = 0, info = overlays; info; info++, k++) {
- if (k == onum)
+ for (k = 0, info = overlays; info && info->name; info++, k++) {
+ if (!strcmp(overlay_name, info->name)) {
+ found = 1;
break;
+ }
}
- if (onum > k)
+ if (!found) {
+ pr_err("no overlay data for %s\n", overlay_name);
return 0;
+ }
size = info->dtb_end - info->dtb_begin;
if (!size) {
- pr_err("no overlay to attach, %d\n", onum);
+ pr_err("no overlay data for %s\n", overlay_name);
ret = 0;
}
- size_from_header = fdt_totalsize(info->dtb_begin);
- if (size_from_header != size) {
- pr_err("overlay header totalsize != actual size, %d", onum);
- return 0;
- }
-
- /*
- * Must create permanent copy of FDT because of_fdt_unflatten_tree()
- * will create pointers to the passed in FDT in the EDT.
- */
- info->data = kmemdup(info->dtb_begin, size, GFP_KERNEL);
- if (!info->data) {
- pr_err("unable to allocate memory for data, %d\n", onum);
- return 0;
- }
-
- of_fdt_unflatten_tree(info->data, NULL, &info->np_overlay);
- if (!info->np_overlay) {
- pr_err("unable to unflatten overlay, %d\n", onum);
- ret = 0;
- goto out_free_data;
- }
-
- info->overlay_id = 0;
- ret = of_overlay_apply(info->np_overlay, &info->overlay_id);
- if (ret < 0) {
- pr_err("of_overlay_apply() (ret=%d), %d\n", ret, onum);
- goto out_free_np_overlay;
- }
-
- pr_debug("__dtb_overlay_begin applied, overlay id %d\n", ret);
-
- goto out;
-
-out_free_np_overlay:
- /*
- * info->np_overlay is the unflattened device tree
- * It has not been spliced into the live tree.
- */
-
- /* todo: function to free unflattened device tree */
+ ret = of_overlay_fdt_apply(info->dtb_begin, size, &info->overlay_id);
+ if (overlay_id)
+ *overlay_id = info->overlay_id;
+ if (ret < 0)
+ goto out;
-out_free_data:
- kfree(info->data);
+ pr_debug("%s applied\n", overlay_name);
out:
+ if (ret != info->expected_result)
+ pr_err("of_overlay_fdt_apply() expected %d, ret=%d, %s\n",
+ info->expected_result, ret, overlay_name);
+
return (ret == info->expected_result);
}
@@ -2290,18 +2275,29 @@ static __init void of_unittest_overlay_high_level(void)
__of_attach_node_sysfs(np);
if (of_symbols) {
+ struct property *new_prop;
for_each_property_of_node(overlay_base_symbols, prop) {
- ret = __of_add_property(of_symbols, prop);
+
+ new_prop = __of_prop_dup(prop, GFP_KERNEL);
+ if (!new_prop) {
+ unittest(0, "__of_prop_dup() of '%s' from overlay_base node __symbols__",
+ prop->name);
+ goto err_unlock;
+ }
+ ret = __of_add_property(of_symbols, new_prop);
if (ret) {
- unittest(0,
- "duplicate property '%s' in overlay_base node __symbols__",
+ if (!strcmp(new_prop->name, "name")) {
+ /* auto-generated by unflatten */
+ ret = 0;
+ continue;
+ }
+ unittest(0, "duplicate property '%s' in overlay_base node __symbols__",
prop->name);
goto err_unlock;
}
- ret = __of_add_property_sysfs(of_symbols, prop);
+ ret = __of_add_property_sysfs(of_symbols, new_prop);
if (ret) {
- unittest(0,
- "unable to add property '%s' in overlay_base node __symbols__ to sysfs",
+ unittest(0, "unable to add property '%s' in overlay_base node __symbols__ to sysfs",
prop->name);
goto err_unlock;
}
@@ -2313,13 +2309,13 @@ static __init void of_unittest_overlay_high_level(void)
/* now do the normal overlay usage test */
- unittest(overlay_data_add(1),
+ unittest(overlay_data_apply("overlay", NULL),
"Adding overlay 'overlay' failed\n");
- unittest(overlay_data_add(2),
+ unittest(overlay_data_apply("overlay_bad_phandle", NULL),
"Adding overlay 'overlay_bad_phandle' failed\n");
- unittest(overlay_data_add(3),
+ unittest(overlay_data_apply("overlay_bad_symbol", NULL),
"Adding overlay 'overlay_bad_symbol' failed\n");
return;
diff --git a/include/linux/of.h b/include/linux/of.h
index da1ee95241c12ccf920b03bd685dc4bf17d0b667..ebf22dd0860cb2144eb59a3a33a81fb2e864ff96 100644
--- a/include/linux/of.h
+++ b/include/linux/of.h
@@ -1359,8 +1359,8 @@ struct of_overlay_notify_data {
#ifdef CONFIG_OF_OVERLAY
-/* ID based overlays; the API for external users */
-int of_overlay_apply(struct device_node *tree, int *ovcs_id);
+int of_overlay_fdt_apply(const void *overlay_fdt, u32 overlay_fdt_size,
+ int *ovcs_id);
int of_overlay_remove(int *ovcs_id);
int of_overlay_remove_all(void);
@@ -1369,7 +1369,7 @@ int of_overlay_notifier_unregister(struct notifier_block *nb);
#else
-static inline int of_overlay_apply(struct device_node *tree, int *ovcs_id)
+static inline int of_overlay_fdt_apply(void *overlay_fdt, int *ovcs_id)
{
return -ENOTSUPP;
}