tree 9746a4273b2ffb68a298ce038eb196f0f65452bb
parent 693d92a1bbc9e42681c42ed190bd42b636ca876f
author Chen Gong <gong.chen@linux.intel.com> 1305568737 -0700
committer Tony Luck <tony.luck@intel.com> 1305569091 -0700

pstore: fix one type of return value in pstore

the return type of function _read_ in pstore is size_t,
but in the callback function of _read_, the logic doesn't
consider it too much, which means if negative value (assuming
error here) is returned, it will be converted to positive because
of type casting. ssize_t is enough for this function.

Signed-off-by: Chen Gong <gong.chen@linux.intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>