diff options
| author | Tony Lindgren <tony@atomide.com> | 2021-09-30 09:06:24 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-10-05 14:05:59 +0200 |
| commit | 9136c68346d096697935b9840782f7051d5796c5 (patch) | |
| tree | 943ad353ec9a40b0915ef59282168e71c29228c0 /drivers/tty | |
| parent | 46292622ad73792b44bd9744d269793b209c7630 (diff) | |
tty: n_gsm: Don't ignore write return value in gsmld_output()
We currently have gsmld_output() ignore the return value from device
write. This means we will lose packets if device write returns 0 or
an error.
Signed-off-by: Tony Lindgren <tony@atomide.com>
Link: https://lore.kernel.org/r/20210930060624.46523-1-tony@atomide.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/n_gsm.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/drivers/tty/n_gsm.c b/drivers/tty/n_gsm.c index 182d5914dfb9..0b96b14bbfe1 100644 --- a/drivers/tty/n_gsm.c +++ b/drivers/tty/n_gsm.c @@ -695,7 +695,7 @@ 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 (gsmld_output(gsm, gsm->txframe, len) < 0) + if (gsmld_output(gsm, gsm->txframe, len) <= 0) break; /* FIXME: Can eliminate one SOF in many more cases */ gsm->tx_bytes -= msg->len; @@ -2415,8 +2415,7 @@ static int gsmld_output(struct gsm_mux *gsm, u8 *data, int len) if (debug & 4) print_hex_dump_bytes("gsmld_output: ", DUMP_PREFIX_OFFSET, data, len); - gsm->tty->ops->write(gsm->tty, data, len); - return len; + return gsm->tty->ops->write(gsm->tty, data, len); } /** |