[Pdbg] [PATCH 16/23] libpdbg: Drop argument from pdbg_targets_init()

[Amitay Isaacs]

Now that all device tree detection is built in libpdbg, there is no need
to pass device tree blob to pdbg_targets_init().  Also, make it return
status to indicate success or failure.

Signed-off-by: Amitay Isaacs <amitay at ozlabs.org>
---
 libpdbg/device.c                | 12 +++++++-----
 libpdbg/libpdbg.h               |  2 +-
 src/main.c                      |  3 ++-
 src/tests/libpdbg_dtree_test.c  |  2 +-
 src/tests/libpdbg_probe_test.c  |  6 +++---
 src/tests/libpdbg_target_test.c |  2 +-
 6 files changed, 15 insertions(+), 12 deletions(-)

diff --git a/libpdbg/device.c b/libpdbg/device.c
index b499171..00bcf10 100644
--- a/libpdbg/device.c
+++ b/libpdbg/device.c
@@ -718,23 +718,25 @@ skip:
 	}
 }
 
-void pdbg_targets_init(void *fdt)
+bool pdbg_targets_init(void)
 {
-	if (!fdt)
-		fdt = pdbg_default_dtb();
+	void *fdt;
 
+	fdt = pdbg_default_dtb();
 	if (!fdt) {
 		pdbg_log(PDBG_ERROR, "Could not find a system device tree\n");
-		return;
+		return false;
 	}
 
 	/* Root node needs to be valid when this function returns */
 	pdbg_dt_root = dt_new_node("", NULL, 0);
-	assert(pdbg_dt_root);
+	if (!pdbg_dt_root)
+		return false;
 
 	dt_expand(pdbg_dt_root, fdt);
 
 	pdbg_targets_init_virtual(pdbg_dt_root, pdbg_dt_root);
+	return true;
 }
 
 char *pdbg_target_path(struct pdbg_target *target)
diff --git a/libpdbg/libpdbg.h b/libpdbg/libpdbg.h
index df74e43..7603b96 100644
--- a/libpdbg/libpdbg.h
+++ b/libpdbg/libpdbg.h
@@ -101,7 +101,7 @@ uint64_t pdbg_target_address(struct pdbg_target *target, uint64_t *size);
 	(index == 0 ? pdbg_target_address(target, size) : assert(0))
 
 /* Misc. */
-void pdbg_targets_init(void *fdt);
+bool pdbg_targets_init(void);
 void pdbg_target_probe_all(struct pdbg_target *parent);
 enum pdbg_target_status pdbg_target_probe(struct pdbg_target *target);
 void pdbg_target_release(struct pdbg_target *target);
diff --git a/src/main.c b/src/main.c
index f7f891a..2ef61a3 100644
--- a/src/main.c
+++ b/src/main.c
@@ -580,7 +580,8 @@ int main(int argc, char *argv[])
 	if (backend)
 		pdbg_set_backend(backend, device_node);
 
-	pdbg_targets_init(NULL);
+	if (!pdbg_targets_init())
+		return 1;
 
 	if (pathsel_count) {
 		if (!path_target_parse(pathsel, pathsel_count))
diff --git a/src/tests/libpdbg_dtree_test.c b/src/tests/libpdbg_dtree_test.c
index 434728a..4f1ff08 100644
--- a/src/tests/libpdbg_dtree_test.c
+++ b/src/tests/libpdbg_dtree_test.c
@@ -55,7 +55,7 @@ static void usage(void)
 
 int main(int argc, const char **argv)
 {
-	pdbg_targets_init(NULL);
+	assert(pdbg_targets_init());
 
 	if (argc < 2)
 		usage();
diff --git a/src/tests/libpdbg_probe_test.c b/src/tests/libpdbg_probe_test.c
index 8b78b2e..02f91d1 100644
--- a/src/tests/libpdbg_probe_test.c
+++ b/src/tests/libpdbg_probe_test.c
@@ -74,7 +74,7 @@ static void test1(void)
 	struct pdbg_target *root, *target;
 
 	pdbg_set_backend(PDBG_BACKEND_FAKE, NULL);
-	pdbg_targets_init(NULL);
+	assert(pdbg_targets_init());
 
 	root = pdbg_target_root();
 	assert(root);
@@ -122,7 +122,7 @@ static void test2(void)
 	enum pdbg_target_status status;
 
 	pdbg_set_backend(PDBG_BACKEND_FAKE, NULL);
-	pdbg_targets_init(NULL);
+	assert(pdbg_targets_init());
 
 	root = pdbg_target_root();
 	assert(root);
@@ -186,7 +186,7 @@ static void test3(void)
 	enum pdbg_target_status status;
 
 	pdbg_set_backend(PDBG_BACKEND_FAKE, NULL);
-	pdbg_targets_init(NULL);
+	assert(pdbg_targets_init());
 
 	root = pdbg_target_root();
 	assert(root);
diff --git a/src/tests/libpdbg_target_test.c b/src/tests/libpdbg_target_test.c
index b5f7fdd..0af3ebb 100644
--- a/src/tests/libpdbg_target_test.c
+++ b/src/tests/libpdbg_target_test.c
@@ -66,7 +66,7 @@ int main(void)
 	int count;
 
 	pdbg_set_backend(PDBG_BACKEND_FAKE, NULL);
-	pdbg_targets_init(NULL);
+	assert(pdbg_targets_init());
 
 	root = pdbg_target_root();
 	assert(root);
-- 
2.21.0