X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=ao-tools%2Flib%2Fcc-usb.c;h=65a4cbad41e54435510828f2e7c3a4ea0eccf81a;hb=95d39febfa9b6c6f2696fb1b47cf72aa808ec7c9;hp=1a4dc7a1163f7460bdf139422be70d72ed44d35c;hpb=32c68670af9f8aa690c64d64502e559c0df0c1db;p=fw%2Faltos

diff --git a/ao-tools/lib/cc-usb.c b/ao-tools/lib/cc-usb.c
index 1a4dc7a1..65a4cbad 100644
--- a/ao-tools/lib/cc-usb.c
+++ b/ao-tools/lib/cc-usb.c
@@ -207,8 +207,10 @@ _cc_usb_sync(struct cc_usb *cc, int wait_for_input, int write_timeout)
 					write(2, cc->in_buf, cc->in_count);
 					cc->in_count = 0;
 				}
-			} else if (ret < 0)
+			} else if (ret <= 0) {
 				perror("read");
+				return -1;
+			}
 		}
 		if (fds.revents & POLLOUT) {
 			ret = write(cc->fd, cc->out_buf,
@@ -458,7 +460,7 @@ cc_usb_open(char *tty)
 	cfsetospeed(&termios, B9600);
 	cfsetispeed(&termios, B9600);
 	tcsetattr(cc->fd, TCSAFLUSH, &termios);
-	cc_usb_printf(cc, "\nE 0\nm 0\n");
+	cc_usb_printf(cc, "\nE 0\n");
 	do {
 		cc->in_count = cc->in_pos = 0;
 		_cc_usb_sync(cc, 100, cc_default_timeout);