diff options
Diffstat (limited to 'ao-tools/lib/cc-usb.c')
| -rw-r--r-- | ao-tools/lib/cc-usb.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/ao-tools/lib/cc-usb.c b/ao-tools/lib/cc-usb.c index 81309983..17f05911 100644 --- a/ao-tools/lib/cc-usb.c +++ b/ao-tools/lib/cc-usb.c @@ -157,7 +157,8 @@ cc_usb_dbg(int indent, uint8_t *bytes, int len) /* * Flush pending writes, fill pending reads */ -void + +int cc_usb_sync(struct cc_usb *cc) { int ret; @@ -167,7 +168,7 @@ cc_usb_sync(struct cc_usb *cc) fds.fd = cc->fd; for (;;) { if (cc->read_count || cc->out_count) - timeout = -1; + timeout = 5000; else timeout = 0; fds.events = 0; @@ -176,8 +177,13 @@ cc_usb_sync(struct cc_usb *cc) if (cc->out_count) fds.events |= POLLOUT; ret = poll(&fds, 1, timeout); - if (ret == 0) + if (ret == 0) { + if (timeout) { + fprintf(stderr, "USB link timeout\n"); + exit(1); + } break; + } if (ret < 0) { perror("poll"); break; |