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norma-dmm: Make serial write call block. 

This call is executed from an event handler and was previously nonblocking,
but has no partial write handling. It sends a short packet so should be OK
to block, most likely the output buffer will be empty anyway.
This commit is contained in:
Martin Ling 2014-09-21 19:14:05 +01:00 committed by Uwe Hermann
parent 8849f45ad7
commit 92714255b3
1 changed files with 2 additions and 3 deletions
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5
src/hardware/norma-dmm/protocol.c
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@ -48,9 +48,8 @@ static int nma_send_req(const struct sr_dev_inst *sdi, int req, char *params)
devc->last_req = req;
devc->last_req_pending = TRUE;
if (serial_write(serial, buf, len) == -1) {
sr_err("Unable to send request: %d %s.",
errno, strerror(errno));
if (serial_write_blocking(serial, buf, len) < 0) {
sr_err("Unable to send request.");
devc->last_req_pending = FALSE;
return SR_ERR;
}