diff options
Diffstat (limited to 'drivers/char/n_hdlc.c')
| -rw-r--r-- | drivers/char/n_hdlc.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/char/n_hdlc.c b/drivers/char/n_hdlc.c index 37f7d3403040..e8332f305d72 100644 --- a/drivers/char/n_hdlc.c +++ b/drivers/char/n_hdlc.c @@ -400,7 +400,12 @@ static void n_hdlc_send_frames(struct n_hdlc *n_hdlc, struct tty_struct *tty) /* Send the next block of data to device */ tty->flags |= (1 << TTY_DO_WRITE_WAKEUP); actual = tty->driver->write(tty, tbuf->buf, tbuf->count); - + + /* rollback was possible and has been done */ + if (actual == -ERESTARTSYS) { + n_hdlc->tbuf = tbuf; + break; + } /* if transmit error, throw frame away by */ /* pretending it was accepted by driver */ if (actual < 0) |