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rigol-ds: Fix a couple of compile warnings.

This commit is contained in:
Martin Ling 2014-01-23 10:13:54 +00:00 committed by Bert Vermeulen
parent e36aae989c
commit fe0d9caa88
1 changed files with 16 additions and 16 deletions
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32
hardware/rigol-ds/protocol.c
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@ -422,18 +422,18 @@ static int rigol_ds_read_header(struct sr_dev_inst *sdi)
struct sr_scpi_dev_inst *scpi = sdi->conn;
struct dev_context *devc = sdi->priv;
char *buf = (char *) devc->buffer;
int len;
int tmp;
size_t header_length;
int ret;
/* Try to read the hashsign and length digit. */
if (devc->num_header_bytes < 2) {
tmp = sr_scpi_read_data(scpi, buf + devc->num_header_bytes,
ret = sr_scpi_read_data(scpi, buf + devc->num_header_bytes,
2 - devc->num_header_bytes);
if (tmp < 0) {
if (ret < 0) {
sr_err("Read error while reading data header.");
return SR_ERR;
}
devc->num_header_bytes += tmp;
devc->num_header_bytes += ret;
}
if (devc->num_header_bytes < 2)
@ -444,33 +444,33 @@ static int rigol_ds_read_header(struct sr_dev_inst *sdi)
return SR_ERR;
}
len = buf[1] - '0';
header_length = 2 + buf[1] - '0';
/* Try to read the length. */
if (devc->num_header_bytes < 2 + len) {
tmp = sr_scpi_read_data(scpi, buf + devc->num_header_bytes,
2 + len - devc->num_header_bytes);
if (tmp < 0) {
if (devc->num_header_bytes < header_length) {
ret = sr_scpi_read_data(scpi, buf + devc->num_header_bytes,
header_length - devc->num_header_bytes);
if (ret < 0) {
sr_err("Read error while reading data header.");
return SR_ERR;
}
devc->num_header_bytes += tmp;
devc->num_header_bytes += ret;
}
if (devc->num_header_bytes < 2 + len)
if (devc->num_header_bytes < header_length)
return 0;
/* Read the data length. */
buf[2 + len] = '\0';
buf[header_length] = '\0';
if (parse_int(buf + 2, &len) != SR_OK) {
if (parse_int(buf + 2, &ret) != SR_OK) {
sr_err("Received invalid data block length '%s'.", buf + 2);
return -1;
}
sr_dbg("Received data block header: '%s' -> block length %d", buf, len);
sr_dbg("Received data block header: '%s' -> block length %d", buf, ret);
return len;
return ret;
}
SR_PRIV int rigol_ds_receive(int fd, int revents, void *cb_data)