diff options
| author |   Hendrik Brueckner <brueckner@linux.vnet.ibm.com> | 2013-07-02 17:07:14 +0200 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-07-24 15:21:13 -0700 |
| commit | 33e745a192c272130b02b86d5dea5b577a291ed7 (patch) | |
| tree | 781e9404d1664513c308bb8a4ea891f6cb73ff81 /drivers/tty/hvc/hvc_console.c | |
| parent | drivers/tty/serial: don't use devm_pinctrl_get_select_default() in probe (diff) | |
| download | linux-dev-33e745a192c272130b02b86d5dea5b577a291ed7.tar.xz linux-dev-33e745a192c272130b02b86d5dea5b577a291ed7.zip | |
tty/hvc_console: Add DTR/RTS callback to handle HUPCL control
Introduce a new callback to explicitly handle the HUPCL termios control flag.
This prepares for a follow-up commit for the hvc_iucv device driver to
improve handling when to drop an established network connection.
The callback naming is based on the recently added tty_port interface to
facilitate a potential refactoring of the hvc_console to use tty_port
functions.
Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/hvc/hvc_console.c')
| -rw-r--r-- | drivers/tty/hvc/hvc_console.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/tty/hvc/hvc_console.c b/drivers/tty/hvc/hvc_console.c index eb255e807c06..9eba119bcdd3 100644 --- a/drivers/tty/hvc/hvc_console.c +++ b/drivers/tty/hvc/hvc_console.c @@ -361,7 +361,12 @@ static int hvc_open(struct tty_struct *tty, struct file * filp) tty->driver_data = NULL; tty_port_put(&hp->port); printk(KERN_ERR "hvc_open: request_irq failed with rc %d.\n", rc); - } + } else + /* We are ready... raise DTR/RTS */ + if (C_BAUD(tty)) + if (hp->ops->dtr_rts) + hp->ops->dtr_rts(hp, 1); + /* Force wakeup of the polling thread */ hvc_kick(); @@ -393,6 +398,10 @@ static void hvc_close(struct tty_struct *tty, struct file * filp) /* We are done with the tty pointer now. */ tty_port_tty_set(&hp->port, NULL); + if (C_HUPCL(tty)) + if (hp->ops->dtr_rts) + hp->ops->dtr_rts(hp, 0); + if (hp->ops->notifier_del) hp->ops->notifier_del(hp, hp->data); |