Some device trees can be quite long, e.g. because they contain all
possible pinmux entries. Writing that out over serial can take quite a
while. Check for ctrlc() between nodes to make these less annoying.

Signed-off-by: Ahmad Fatoum <[email protected]>
---
 commands/of_dump.c |  5 ++++-
 drivers/of/base.c  | 13 ++++++++++---
 2 files changed, 14 insertions(+), 4 deletions(-)

diff --git a/commands/of_dump.c b/commands/of_dump.c
index 5223ba63ad23..6f36b3151458 100644
--- a/commands/of_dump.c
+++ b/commands/of_dump.c
@@ -23,8 +23,11 @@ static void of_print_nodenames(struct device_node *node)
 
        printf("%s\n", node->full_name);
 
-       list_for_each_entry(n, &node->children, parent_list)
+       list_for_each_entry(n, &node->children, parent_list) {
+               if (ctrlc())
+                       return;
                of_print_nodenames(n);
+       }
 }
 
 static int do_of_dump(int argc, char *argv[])
diff --git a/drivers/of/base.c b/drivers/of/base.c
index 321022f2b391..664a3a411eaf 100644
--- a/drivers/of/base.c
+++ b/drivers/of/base.c
@@ -1968,13 +1968,14 @@ int of_property_read_string_helper(const struct 
device_node *np,
        return i <= 0 ? -ENODATA : i;
 }
 
-static void __of_print_nodes(struct device_node *node, int indent, const char 
*prefix)
+static int __of_print_nodes(struct device_node *node, int indent, const char 
*prefix)
 {
        struct device_node *n;
        struct property *p;
+       int ret;
 
        if (!node)
-               return;
+               return 0;
 
        if (!prefix)
                prefix = "";
@@ -1990,11 +1991,17 @@ static void __of_print_nodes(struct device_node *node, 
int indent, const char *p
                printf(";\n");
        }
 
+       if (ctrlc())
+               return -EINTR;
+
        list_for_each_entry(n, &node->children, parent_list) {
-               __of_print_nodes(n, indent + 1, prefix);
+               ret = __of_print_nodes(n, indent + 1, prefix);
+               if (ret)
+                       return ret;
        }
 
        printf("%s%*s};\n", prefix, indent * 8, "");
+       return 0;
 }
 
 void of_print_nodes(struct device_node *node, int indent)
-- 
2.30.2


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