scripts/dtc: Update to upstream version 53bf130b1cdd

Sync to upstream dtc commit 53bf130b1cdd ("libfdt: simplify
fdt_node_check_compatible()"). This adds the following commits from
upstream:

53bf130 libfdt: simplify fdt_node_check_compatible()
c9d9121 Warn on node name unit-address presence/absence mismatch
2e53f9d Catch unsigned 32bit overflow when parsing flattened device tree offsets

Signed-off-by: Rob Herring <robh@kernel.org>

4 files changed, 31 insertions, 7 deletions

diff --git a/scripts/dtc/checks.c b/scripts/dtc/checks.c
index 0c03ac9159c1..386f9563313f 100644
--- a/scripts/dtc/checks.c
+++ b/scripts/dtc/checks.c
@@ -294,6 +294,30 @@ static void check_node_name_format(struct check *c, struct node *dt,
 }
 NODE_ERROR(node_name_format, NULL, &node_name_chars);
 
+static void check_unit_address_vs_reg(struct check *c, struct node *dt,
+                             struct node *node)
+{
+        const char *unitname = get_unitname(node);
+        struct property *prop = get_property(node, "reg");
+
+        if (!prop) {
+                prop = get_property(node, "ranges");
+                if (prop && !prop->val.len)
+                        prop = NULL;
+        }
+
+        if (prop) {
+                if (!unitname[0])
+                        FAIL(c, "Node %s has a reg or ranges property, but no unit name",
+                            node->fullpath);
+        } else {
+                if (unitname[0])
+                        FAIL(c, "Node %s has a unit name, but no reg property",
+                            node->fullpath);
+        }
+}
+NODE_WARNING(unit_address_vs_reg, NULL);
+
 static void check_property_name_chars(struct check *c, struct node *dt,
                                       struct node *node, struct property *prop)
 {
@@ -667,6 +691,8 @@ static struct check *check_table[] = {
 
         &addr_size_cells, &reg_format, &ranges_format,
 
+        &unit_address_vs_reg,
+
         &avoid_default_addr_size,
         &obsolete_chosen_interrupt_controller,
 
diff --git a/scripts/dtc/flattree.c b/scripts/dtc/flattree.c
index bd99fa2d33b8..ec14954f5810 100644
--- a/scripts/dtc/flattree.c
+++ b/scripts/dtc/flattree.c
@@ -889,7 +889,7 @@ struct boot_info *dt_from_blob(const char *fname)
 
         if (version >= 3) {
                 uint32_t size_str = fdt32_to_cpu(fdt->size_dt_strings);
-                if (off_str+size_str > totalsize)
+                if ((off_str+size_str < off_str) || (off_str+size_str > totalsize))
                         die("String table extends past total size\n");
                 inbuf_init(&strbuf, blob + off_str, blob + off_str + size_str);
         } else {
@@ -898,7 +898,7 @@ struct boot_info *dt_from_blob(const char *fname)
 
         if (version >= 17) {
                 size_dt = fdt32_to_cpu(fdt->size_dt_struct);
-                if (off_dt+size_dt > totalsize)
+                if ((off_dt+size_dt < off_dt) || (off_dt+size_dt > totalsize))
                         die("Structure block extends past total size\n");
         }
 
diff --git a/scripts/dtc/libfdt/fdt_ro.c b/scripts/dtc/libfdt/fdt_ro.c
index e5b313682007..50cce864283c 100644
--- a/scripts/dtc/libfdt/fdt_ro.c
+++ b/scripts/dtc/libfdt/fdt_ro.c
@@ -647,10 +647,8 @@ int fdt_node_check_compatible(const void *fdt, int nodeoffset,
         prop = fdt_getprop(fdt, nodeoffset, "compatible", &len);
         if (!prop)
                 return len;
-        if (fdt_stringlist_contains(prop, len, compatible))
-                return 0;
-        else
-                return 1;
+
+        return !fdt_stringlist_contains(prop, len, compatible);
 }
 
 int fdt_node_offset_by_compatible(const void *fdt, int startoffset,
diff --git a/scripts/dtc/version_gen.h b/scripts/dtc/version_gen.h
index 11d93e6d8220..ad9b05ae698b 100644
--- a/scripts/dtc/version_gen.h
+++ b/scripts/dtc/version_gen.h
@@ -1 +1 @@
-#define DTC_VERSION "DTC 1.4.1-gb06e55c8"
+#define DTC_VERSION "DTC 1.4.1-g53bf130b"