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authorDaniel Starke <daniel.starke@siemens.com>2022-04-14 12:42:19 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2022-04-15 09:36:05 +0300
commit1adf6fee58ca25fb6720b8d34c919dcf5425cc9c (patch)
tree623dc51d45d8da1e60af3c77568543f7fc41805a /drivers/tty/n_gsm.c
parent317f86af7f5d19f286ed2d181cbaef4a188c7f19 (diff)
downloadlinux-1adf6fee58ca25fb6720b8d34c919dcf5425cc9c.tar.xz
tty: n_gsm: fix missing tty wakeup in convergence layer type 2
gsm_control_modem() informs the virtual tty that more data can be written after receiving a control signal octet via modem status command (MSC). However, gsm_dlci_data() fails to do the same after receiving a control signal octet from the convergence layer type 2 header. Add tty_wakeup() in gsm_dlci_data() for convergence layer type 2 to fix this. Fixes: e1eaea46bb40 ("tty: n_gsm line discipline") Cc: stable@vger.kernel.org Signed-off-by: Daniel Starke <daniel.starke@siemens.com> Link: https://lore.kernel.org/r/20220414094225.4527-14-daniel.starke@siemens.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/n_gsm.c')
-rw-r--r--drivers/tty/n_gsm.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/tty/n_gsm.c b/drivers/tty/n_gsm.c
index 23418ee93156..f3fb66be8513 100644
--- a/drivers/tty/n_gsm.c
+++ b/drivers/tty/n_gsm.c
@@ -1615,6 +1615,7 @@ static void gsm_dlci_data(struct gsm_dlci *dlci, const u8 *data, int clen)
tty = tty_port_tty_get(port);
if (tty) {
gsm_process_modem(tty, dlci, modem, slen);
+ tty_wakeup(tty);
tty_kref_put(tty);
}
fallthrough;