linux-wandboard

csr1212: check results of keyval reads

csr1212_parse_csr() did not properly check return values when reading
keyvals.  Fix this by using _csr1212_read_keyval() instead of
csr1212_get_keyval() and checking the return code.

Signed-off-by: Jody McIntyre <scjody@steamballoon.com>