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| author | Zhenguo Zhao <Zhenguo.Zhao1@unisoc.com> | 2021-08-20 20:17:49 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-09-14 10:50:27 +0200 |
| commit | 509067bbd2644ed8f59b84b5db95a985633004ba (patch) | |
| tree | bc3e12194a30bffd89711b77b5f1c1a476e2dea9 /drivers/tty/n_gsm.c | |
| parent | f999c3b35735d9e9b33a7be7b071f8ad75237f68 (diff) | |
| download | linux-509067bbd2644ed8f59b84b5db95a985633004ba.tar.bz2 | |
tty: n_gsm: Delete gsm_disconnect when config requester
When n_gsm config "initiator=0",when gsmld config ,as requester ,it
doesn't need to send CLD frame data or SABM frame.
Example,when tty dev receive "AT+CMUX=0",it will change ldisc
n_tty to n_gsm,during config requester,gsmld output "7e 01 ef c3 aa 7e",
initiator maybe not want to receive the frame data.
[ 154.666457] c1 Q> 0) R: UIH(F)
[ 154.669514] c1 C3
[ 154.671519] c1 gsmld_output: 00000000: 7e 01 ef c3 aa 7e
[ 155.014874] c1 Q> 0) R: UIH(F)
[ 155.018000] c1 C3
[ 155.020046] c1 gsmld_output: 00000000: 7e 01 ef c3 aa 7e
[ 155.364425] c1 Q> 0) R: UIH(F)
[ 155.367546] c1 C3
[ 155.369597] c1 gsmld_output: 00000000: 7e 01 ef c3 aa 7e
Signed-off-by: Zhenguo Zhao <Zhenguo.Zhao1@unisoc.com>
Link: https://lore.kernel.org/r/1629461872-26965-5-git-send-email-zhenguo6858@gmail.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 | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/tty/n_gsm.c b/drivers/tty/n_gsm.c index 563b685de88c..fd980a68c7ea 100644 --- a/drivers/tty/n_gsm.c +++ b/drivers/tty/n_gsm.c @@ -2304,7 +2304,7 @@ static int gsm_config(struct gsm_mux *gsm, struct gsm_config *c) * configuration */ - if (need_close || need_restart) { + if (gsm->initiator && (need_close || need_restart)) { int ret; ret = gsm_disconnect(gsm); |