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| author | Daniel Starke <daniel.starke@siemens.com> | 2022-04-14 02:42:19 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-04-15 08:36:05 +0200 |
| commit | 1adf6fee58ca25fb6720b8d34c919dcf5425cc9c (patch) | |
| tree | 623dc51d45d8da1e60af3c77568543f7fc41805a /drivers/tty/n_gsm.c | |
| parent | 317f86af7f5d19f286ed2d181cbaef4a188c7f19 (diff) | |
| download | linux-stable-1adf6fee58ca25fb6720b8d34c919dcf5425cc9c.tar.gz linux-stable-1adf6fee58ca25fb6720b8d34c919dcf5425cc9c.tar.bz2 linux-stable-1adf6fee58ca25fb6720b8d34c919dcf5425cc9c.zip | |
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.c | 1 |
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; |