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| author | Martin Hundebøll <martin@geanix.com> | 2019-08-12 23:12:43 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-09-04 12:43:54 +0200 |
| commit | a7b121b4b8b0bcc14fc1c2a81d34096109a65dd6 (patch) | |
| tree | 19c00636e4d396d430f254ad841f4226134b6f30 /include/uapi | |
| parent | d193db7fb10d3ae8322e5f65e4c39946156e24c2 (diff) | |
| download | linux-a7b121b4b8b0bcc14fc1c2a81d34096109a65dd6.tar.gz linux-a7b121b4b8b0bcc14fc1c2a81d34096109a65dd6.tar.bz2 linux-a7b121b4b8b0bcc14fc1c2a81d34096109a65dd6.zip | |
tty: n_gsm: add ioctl to map serial device to mux'ed tty
Guessing the first tty for a gsm0710 multiplexed serial device is not
currently possible, which makes it racy to use with multiple modems.
Add a way to map the physical serial tty to its related mux devices
using an ioctl.
Signed-off-by: Martin Hundebøll <martin@geanix.com>
Link: https://lore.kernel.org/r/20190812211243.98686-1-martin@geanix.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/uapi')
| -rw-r--r-- | include/uapi/linux/gsmmux.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/uapi/linux/gsmmux.h b/include/uapi/linux/gsmmux.h index 101d3c469acb..cb8693b39cb7 100644 --- a/include/uapi/linux/gsmmux.h +++ b/include/uapi/linux/gsmmux.h @@ -37,5 +37,7 @@ struct gsm_netconfig { #define GSMIOC_ENABLE_NET _IOW('G', 2, struct gsm_netconfig) #define GSMIOC_DISABLE_NET _IO('G', 3) +/* get the base tty number for a configured gsmmux tty */ +#define GSMIOC_GETFIRST _IOR('G', 4, __u32) #endif |