tty: n_gsm: add TIOCMIWAIT support

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Add support for the TIOCMIWAIT ioctl on the virtual ttys. This enables the
user to wait for virtual modem signals like RING.

More work is needed to support also TIOCGICOUNT.

Signed-off-by: Daniel Starke <daniel.starke@siemens.com>
Link: https://lore.kernel.org/r/20230206114606.2133-4-daniel.starke@siemens.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Daniel Starke 2023-02-06 12:46:06 +01:00 • committed by Greg Kroah-Hartman

parent 42ec0b93e4

commit 684ae4f951

1 changed files with 32 additions and 1 deletions

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drivers/tty/n_gsm.c

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