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| author | Jag Raman <jag.raman@oracle.com> | 2017-08-15 17:03:05 -0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-08-15 21:33:53 -0700 |
| commit | 6a3ff25bc6cda6293eeed6056f73d76eb35e3076 (patch) | |
| tree | 02cb175d78b6eb6b4a976612a33069649d44d5e5 /drivers/tty | |
| parent | 63a7174484223f4ba35a3bad8db43234ab56ecea (diff) | |
| download | linux-6a3ff25bc6cda6293eeed6056f73d76eb35e3076.tar.gz linux-6a3ff25bc6cda6293eeed6056f73d76eb35e3076.tar.bz2 linux-6a3ff25bc6cda6293eeed6056f73d76eb35e3076.zip | |
sparc64: vcc: Add hangup TTY operation
Add handler to support TTY hangup operation
Signed-off-by: Jagannathan Raman <jag.raman@oracle.com>
Reviewed-by: Liam Merwick <liam.merwick@oracle.com>
Reviewed-by: Shannon Nelson <shannon.nelson@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/vcc.c | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/drivers/tty/vcc.c b/drivers/tty/vcc.c index f964fb20e4ba..67be5a57c1b5 100644 --- a/drivers/tty/vcc.c +++ b/drivers/tty/vcc.c @@ -804,9 +804,50 @@ static void vcc_close(struct tty_struct *tty, struct file *vcc_file) tty_port_close(tty->port, tty, vcc_file); } +static void vcc_ldc_hup(struct vcc_port *port) +{ + unsigned long flags; + + spin_lock_irqsave(&port->lock, flags); + + if (vcc_send_ctl(port, VCC_CTL_HUP) < 0) + vcc_kick_tx(port); + + spin_unlock_irqrestore(&port->lock, flags); +} + +static void vcc_hangup(struct tty_struct *tty) +{ + struct vcc_port *port; + + if (unlikely(!tty)) { + pr_err("VCC: hangup: Invalid TTY handle\n"); + return; + } + + port = vcc_get_ne(tty->index); + if (unlikely(!port)) { + pr_err("VCC: hangup: Failed to find VCC port\n"); + return; + } + + if (unlikely(!tty->port)) { + pr_err("VCC: hangup: TTY port not found\n"); + vcc_put(port, false); + return; + } + + vcc_ldc_hup(port); + + vcc_put(port, false); + + tty_port_hangup(tty->port); +} + static const struct tty_operations vcc_ops = { .open = vcc_open, .close = vcc_close, + .hangup = vcc_hangup, }; #define VCC_TTY_FLAGS (TTY_DRIVER_DYNAMIC_DEV | TTY_DRIVER_REAL_RAW) |