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libfdt: Detected out-of-space with fdt_finish()

At present the Python sequential-write interface can produce an error when
it calls fdt_finish(), since this needs to add a terminating tag to the
end of the struct section.

Fix this by automatically expanding the buffer if needed.

Signed-off-by: Simon Glass <sjg@chromium.org>
Simon Glass 3 years ago
parent
commit
211cfa503f
1 changed files with 2 additions and 1 deletions
  1. 2 1
      scripts/dtc/pylibfdt/libfdt.i_shipped

+ 2 - 1
scripts/dtc/pylibfdt/libfdt.i_shipped

@@ -786,7 +786,8 @@ class FdtSw(FdtRo):
             Fdt object allowing access to the newly created device tree
         """
         fdtsw = bytearray(self._fdt)
-        check_err(fdt_finish(fdtsw))
+        while self.check_space(fdt_finish(fdtsw)):
+            fdtsw = bytearray(self._fdt)
         return Fdt(fdtsw)
 
     def check_space(self, val):