tree cccddc19a4ff77c8af33dea4919d88ab5384357e
parent 8fd4166c467a46773f80208bda1ec3b4757747bc
author David Gibson <david@gibson.dropbear.id.au> 1219983553 +1000
committer Gerald Van Baren <vanbaren@cideas.com> 1222912911 -0400

libfdt: Fix bugs in fdt_get_path()

The current implementation of fdt_get_path() has a couple of bugs,
fixed by this patch.

First, contrary to its documentation, on success it returns the length
of the node's path, rather than 0.  The testcase is correspondingly
wrong, and the patch fixes this as well.

Second, in some circumstances, it will return -FDT_ERR_BADOFFSET
instead of -FDT_ERR_NOSPACE when given insufficient buffer space.
Specifically this happens when there is insufficient space even to
hold the path's second last component.  This behaviour is corrected,
and the testcase updated to check it.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>