diff options
Diffstat (limited to 'drivers/tty/n_gsm.c')
| -rw-r--r-- | drivers/tty/n_gsm.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/tty/n_gsm.c b/drivers/tty/n_gsm.c index dcc0430a49c8..4572117988f8 100644 --- a/drivers/tty/n_gsm.c +++ b/drivers/tty/n_gsm.c @@ -573,6 +573,7 @@ static void gsm_send(struct gsm_mux *gsm, int addr, int cr, int control) int len; u8 cbuf[10]; u8 ibuf[3]; + unsigned long flags; switch (gsm->encoding) { case 0: @@ -602,7 +603,9 @@ static void gsm_send(struct gsm_mux *gsm, int addr, int cr, int control) WARN_ON(1); return; } + spin_lock_irqsave(&gsm->tx_lock, flags); gsm->output(gsm, cbuf, len); + spin_unlock_irqrestore(&gsm->tx_lock, flags); gsm_print_packet("-->", addr, cr, control, NULL, 0); } |