From 7454c171a88c188583bbfe17db1f9e6e75723b5f Mon Sep 17 00:00:00 2001 From: Gregory CLEMENT Date: Mon, 18 May 2020 10:45:13 +0200 Subject: [PATCH] tty: n_gsm: Fix bogus i++ in gsm_data_kick [ Upstream commit 4dd31f1ffec6c370c3c2e0c605628bf5e16d5c46 ] When submitting the previous fix "tty: n_gsm: Fix waking up upper tty layer when room available". It was suggested to switch from a while to a for loop, but when doing it, there was a remaining bogus i++. This patch removes this i++ and also reorganizes the code making it more compact. Fixes: e1eaea46bb40 ("tty: n_gsm line discipline") Signed-off-by: Gregory CLEMENT Link: https://lore.kernel.org/r/20200518084517.2173242-3-gregory.clement@bootlin.com Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin --- drivers/tty/n_gsm.c | 14 +++----------- 1 file changed, 3 insertions(+), 11 deletions(-) diff --git a/drivers/tty/n_gsm.c b/drivers/tty/n_gsm.c index 8a0d66a05af5..75408b9f232d 100644 --- a/drivers/tty/n_gsm.c +++ b/drivers/tty/n_gsm.c @@ -703,17 +703,9 @@ static void gsm_data_kick(struct gsm_mux *gsm, struct gsm_dlci *dlci) } else { int i = 0; - for (i = 0; i < NUM_DLCI; i++) { - struct gsm_dlci *dlci; - - dlci = gsm->dlci[i]; - if (dlci == NULL) { - i++; - continue; - } - - tty_port_tty_wakeup(&dlci->port); - } + for (i = 0; i < NUM_DLCI; i++) + if (gsm->dlci[i]) + tty_port_tty_wakeup(&gsm->dlci[i]->port); } } }