diff options
| -rw-r--r-- | samples/mei/mei-amt-version.c | 51 |
1 files changed, 30 insertions, 21 deletions
diff --git a/samples/mei/mei-amt-version.c b/samples/mei/mei-amt-version.c index ad3e56042f96..867debd3b912 100644 --- a/samples/mei/mei-amt-version.c +++ b/samples/mei/mei-amt-version.c @@ -154,31 +154,52 @@ err: static ssize_t mei_recv_msg(struct mei *me, unsigned char *buffer, ssize_t len, unsigned long timeout) { + struct timeval tv; + fd_set set; ssize_t rc; + tv.tv_sec = timeout / 1000; + tv.tv_usec = (timeout % 1000) * 1000000; + mei_msg(me, "call read length = %zd\n", len); + FD_ZERO(&set); + FD_SET(me->fd, &set); + rc = select(me->fd + 1, &set, NULL, NULL, &tv); + if (rc > 0 && FD_ISSET(me->fd, &set)) { + mei_msg(me, "have reply\n"); + } else if (rc == 0) { + rc = -1; + mei_err(me, "read failed on timeout\n"); + goto out; + } else { /* rc < 0 */ + rc = errno; + mei_err(me, "read failed on select with status %zd %s\n", + rc, strerror(errno)); + goto out; + } + rc = read(me->fd, buffer, len); if (rc < 0) { mei_err(me, "read failed with status %zd %s\n", rc, strerror(errno)); - mei_deinit(me); - } else { - mei_msg(me, "read succeeded with result %zd\n", rc); + goto out; } + + mei_msg(me, "read succeeded with result %zd\n", rc); + +out: + if (rc < 0) + mei_deinit(me); + return rc; } static ssize_t mei_send_msg(struct mei *me, const unsigned char *buffer, ssize_t len, unsigned long timeout) { - struct timeval tv; ssize_t written; ssize_t rc; - fd_set set; - - tv.tv_sec = timeout / 1000; - tv.tv_usec = (timeout % 1000) * 1000000; mei_msg(me, "call write length = %zd\n", len); @@ -189,19 +210,7 @@ static ssize_t mei_send_msg(struct mei *me, const unsigned char *buffer, written, strerror(errno)); goto out; } - - FD_ZERO(&set); - FD_SET(me->fd, &set); - rc = select(me->fd + 1 , &set, NULL, NULL, &tv); - if (rc > 0 && FD_ISSET(me->fd, &set)) { - mei_msg(me, "write success\n"); - } else if (rc == 0) { - mei_err(me, "write failed on timeout with status\n"); - goto out; - } else { /* rc < 0 */ - mei_err(me, "write failed on select with status %zd\n", rc); - goto out; - } + mei_msg(me, "write success\n"); rc = written; out: |