norma-dmm: Make serial write call block.

[libsigrok.git] / src / hardware / norma-dmm / api.c

diff --git a/src/hardware/norma-dmm/api.c b/src/hardware/norma-dmm/api.c
index c5f95d28e020526f62d5d5e5e00b9272a068267f..deefceaebac6f9623281733ad0d388314a1911a2 100644 (file)
--- a/src/hardware/norma-dmm/api.c
+++ b/src/hardware/norma-dmm/api.c
@@ -129,9 +129,8 @@ static GSList *do_scan(struct sr_dev_driver* drv, GSList *options)
                 nmadmm_requests[NMADMM_REQ_IDN].req_str);
        g_usleep(150 * 1000); /* Wait a little to allow serial port to settle. */
        for (cnt = 0; cnt < 7; cnt++) {
-               if (serial_write(serial, req, strlen(req)) == -1) {
-                       sr_err("Unable to send identification request: %d %s.",
-                              errno, strerror(errno));
+               if (serial_write_blocking(serial, req, strlen(req)) < 0) {
+                       sr_err("Unable to send identification request.");
                        return NULL;
                }
                len = BUF_MAX;