Fix similar broken error handling on several serial calls.

[libsigrok.git] / src / hardware / conrad-digi-35-cpu / protocol.c

diff --git a/src/hardware/conrad-digi-35-cpu/protocol.c b/src/hardware/conrad-digi-35-cpu/protocol.c
index cfabdc7b778a72c38397618e295cdec11587e633..6b1d0d56af1c8923a5680452625f4983ad5b4640 100644 (file)
--- a/src/hardware/conrad-digi-35-cpu/protocol.c
+++ b/src/hardware/conrad-digi-35-cpu/protocol.c
@@ -48,8 +48,8 @@ SR_PRIV int send_msg1(const struct sr_dev_inst *sdi, char cmd, int param)
 
        sr_spew("send_msg1(): %c%c%c%c\\r", buf[0], buf[1], buf[2], buf[3]);
 
-       if (serial_write_blocking(serial, buf, sizeof(buf)) == -1) {
-               sr_err("Write error for cmd=%c: %d %s", cmd, errno, strerror(errno));
+       if (serial_write_blocking(serial, buf, sizeof(buf)) < sizeof(buf)) {
+               sr_err("Write error for cmd=%c", cmd);
                return SR_ERR;
        }