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-rw-r--r--drivers/tty/n_gsm.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/tty/n_gsm.c b/drivers/tty/n_gsm.c
index da3b31a98654..14c26cdd8aca 100644
--- a/drivers/tty/n_gsm.c
+++ b/drivers/tty/n_gsm.c
@@ -833,8 +833,7 @@ static int gsm_dlci_data_output(struct gsm_mux *gsm, struct gsm_dlci *dlci)
break;
case 2: /* Unstructed with modem bits. Always one byte as we never
send inline break data */
- *dp += gsm_encode_modem(dlci);
- len--;
+ *dp++ = gsm_encode_modem(dlci);
break;
}
WARN_ON(kfifo_out_locked(dlci->fifo, dp , len, &dlci->lock) != len);