diff options
| -rw-r--r-- | drivers/tty/n_gsm.c | 58 |
1 files changed, 31 insertions, 27 deletions
diff --git a/drivers/tty/n_gsm.c b/drivers/tty/n_gsm.c index 14c26cdd8ac..4cb0d0a3e57 100644 --- a/drivers/tty/n_gsm.c +++ b/drivers/tty/n_gsm.c @@ -809,37 +809,41 @@ static int gsm_dlci_data_output(struct gsm_mux *gsm, struct gsm_dlci *dlci) { struct gsm_msg *msg; u8 *dp; - int len, size; + int len, total_size, size; int h = dlci->adaption - 1; - len = kfifo_len(dlci->fifo); - if (len == 0) - return 0; - - /* MTU/MRU count only the data bits */ - if (len > gsm->mtu) - len = gsm->mtu; - - size = len + h; - - msg = gsm_data_alloc(gsm, dlci->addr, size, gsm->ftype); - /* FIXME: need a timer or something to kick this so it can't - get stuck with no work outstanding and no buffer free */ - if (msg == NULL) - return -ENOMEM; - dp = msg->data; - switch (dlci->adaption) { - case 1: /* Unstructured */ - break; - case 2: /* Unstructed with modem bits. Always one byte as we never - send inline break data */ - *dp++ = gsm_encode_modem(dlci); - break; + total_size = 0; + while(1) { + len = kfifo_len(dlci->fifo); + if (len == 0) + return total_size; + + /* MTU/MRU count only the data bits */ + if (len > gsm->mtu) + len = gsm->mtu; + + size = len + h; + + msg = gsm_data_alloc(gsm, dlci->addr, size, gsm->ftype); + /* FIXME: need a timer or something to kick this so it can't + get stuck with no work outstanding and no buffer free */ + if (msg == NULL) + return -ENOMEM; + dp = msg->data; + switch (dlci->adaption) { + case 1: /* Unstructured */ + break; + case 2: /* Unstructed with modem bits. Always one byte as we never + send inline break data */ + *dp++ = gsm_encode_modem(dlci); + break; + } + WARN_ON(kfifo_out_locked(dlci->fifo, dp , len, &dlci->lock) != len); + __gsm_data_queue(dlci, msg); + total_size += size; } - WARN_ON(kfifo_out_locked(dlci->fifo, dp , len, &dlci->lock) != len); - __gsm_data_queue(dlci, msg); /* Bytes of data we used up */ - return size; + return total_size; } /** |