tree e7485dcbc3244dd2db888b01773d29fd3bbf026f
parent 7aff7d0abc83b0991e83af3c43f0d0df47e7c3bf
author Andrzej Zaborowski <andrew.zaborowski@intel.com> 1447412492 +0100
committer Herbert Xu <herbert@gondor.apana.org.au> 1447768839 +0800

lib/mpi: only require buffers as big as needed for the integer

Since mpi_write_to_sgl and mpi_read_buffer explicitly left-align the
integers being written it makes no sense to require a buffer big enough for
the number + the leading zero bytes which are not written.  The error
returned also doesn't convey any information.  So instead require only the
size needed and return -EOVERFLOW to signal when buffer too short.

Signed-off-by: Andrew Zaborowski <andrew.zaborowski@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>