Move desc_len sanity checks to start of loops

1 files changed, 4 insertions, 4 deletions

diff --git a/src/tusb.c b/src/tusb.c
index 799ffdce9..66c835e61 100644
--- a/src/tusb.c
+++ b/src/tusb.c
@@ -247,6 +247,10 @@ uint16_t tu_desc_get_interface_total_len(tusb_desc_interface_t const* desc_itf,
     p_desc = tu_desc_next(p_desc);
 
     while (len < max_len) {
+      if (tu_desc_len(p_desc) == 0) {
+        // Escape infinite loop
+        break;
+      }
       // return on IAD regardless of itf count
       if (tu_desc_type(p_desc) == TUSB_DESC_INTERFACE_ASSOCIATION) {
         return len;
@@ -255,10 +259,6 @@ uint16_t tu_desc_get_interface_total_len(tusb_desc_interface_t const* desc_itf,
           ((tusb_desc_interface_t const*) p_desc)->bAlternateSetting == 0) {
         break;
       }
-      if (tu_desc_len(p_desc) == 0) {
-        // Escape infinite loop
-        break;
-      }
 
       len += tu_desc_len(p_desc);
       p_desc = tu_desc_next(p_desc);