diff options
| author | Bdale Garbee <bdale@gag.com> | 2015-07-15 16:43:50 -0600 |
|---|---|---|
| committer | Bdale Garbee <bdale@gag.com> | 2015-07-15 16:43:50 -0600 |
| commit | 643c2fb03833d658320f476ef731bbb06fe3cc31 (patch) | |
| tree | 878c9df5dbd9bab9169becea4e06e8bae3529541 /ao-tools/lib/cc-usb.c | |
| parent | e41786fb384892961a6547e17812a24314ce9623 (diff) | |
| parent | 271f56a41c7e785b0fab7e572325df842d104277 (diff) | |
Merge branch 'master' of ssh://git.gag.com/scm/git/fw/altos
Diffstat (limited to 'ao-tools/lib/cc-usb.c')
| -rw-r--r-- | ao-tools/lib/cc-usb.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/ao-tools/lib/cc-usb.c b/ao-tools/lib/cc-usb.c index 1a4dc7a1..1e023c7e 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, |