| Message ID | 20200817135454.28505-1-tony@atomide.com |
|---|---|
| State | New |
| Headers | show |
| Series | n_gsm: Fix write handling for zero bytes written | expand |
diff --git a/drivers/tty/n_gsm.c b/drivers/tty/n_gsm.c --- a/drivers/tty/n_gsm.c +++ b/drivers/tty/n_gsm.c @@ -691,7 +691,8 @@ static void gsm_data_kick(struct gsm_mux *gsm, struct gsm_dlci *dlci) print_hex_dump_bytes("gsm_data_kick: ", DUMP_PREFIX_OFFSET, gsm->txframe, len); - if (gsm->output(gsm, gsm->txframe, len) < 0) + + if (gsm->output(gsm, gsm->txframe, len) <= 0) break; /* FIXME: Can eliminate one SOF in many more cases */ gsm->tx_bytes -= msg->len;
If write returns zero we currently end up removing the message from the queue. Instead of removing the message, we want to just break out of the loop just like we already do for error codes. Signed-off-by: Tony Lindgren <tony@atomide.com> --- drivers/tty/n_gsm.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)