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| author | Jiri Slaby <jslaby@suse.cz> | 2012-08-07 21:48:00 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-08-13 16:53:13 -0700 |
| commit | 8a3ad1047593f1f6f431140f7dd9748423c51cd1 (patch) | |
| tree | 18d0abd2ee671f54aa7803dc017dc9e7cd52a761 /drivers/tty/synclink.c | |
| parent | f7e0405e7416424c2db2155949dca1daa0225089 (diff) | |
| download | linux-3.10-8a3ad1047593f1f6f431140f7dd9748423c51cd1.tar.gz linux-3.10-8a3ad1047593f1f6f431140f7dd9748423c51cd1.tar.bz2 linux-3.10-8a3ad1047593f1f6f431140f7dd9748423c51cd1.zip | |
TTY: synclink, add tty install
This has two outcomes:
* we give the TTY layer a tty_port
* we do not find the info structure every time open is called on that
tty
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/synclink.c')
| -rw-r--r-- | drivers/tty/synclink.c | 44 |
1 files changed, 26 insertions, 18 deletions
diff --git a/drivers/tty/synclink.c b/drivers/tty/synclink.c index 991bae82123..666aa1455fc 100644 --- a/drivers/tty/synclink.c +++ b/drivers/tty/synclink.c @@ -3362,6 +3362,29 @@ static int block_til_ready(struct tty_struct *tty, struct file * filp, } /* end of block_til_ready() */ +static int mgsl_install(struct tty_driver *driver, struct tty_struct *tty) +{ + struct mgsl_struct *info; + int line = tty->index; + + /* verify range of specified line number */ + if (line >= mgsl_device_count) { + printk("%s(%d):mgsl_open with invalid line #%d.\n", + __FILE__, __LINE__, line); + return -ENODEV; + } + + /* find the info structure for the specified line */ + info = mgsl_device_list; + while (info && info->line != line) + info = info->next_device; + if (mgsl_paranoia_check(info, tty->name, "mgsl_open")) + return -ENODEV; + tty->driver_data = info; + + return tty_port_install(&info->port, driver, tty); +} + /* mgsl_open() * * Called when a port is opened. Init and enable port. @@ -3374,26 +3397,10 @@ static int block_til_ready(struct tty_struct *tty, struct file * filp, */ static int mgsl_open(struct tty_struct *tty, struct file * filp) { - struct mgsl_struct *info; - int retval, line; + struct mgsl_struct *info = tty->driver_data; unsigned long flags; + int retval; - /* verify range of specified line number */ - line = tty->index; - if (line >= mgsl_device_count) { - printk("%s(%d):mgsl_open with invalid line #%d.\n", - __FILE__,__LINE__,line); - return -ENODEV; - } - - /* find the info structure for the specified line */ - info = mgsl_device_list; - while(info && info->line != line) - info = info->next_device; - if (mgsl_paranoia_check(info, tty->name, "mgsl_open")) - return -ENODEV; - - tty->driver_data = info; info->port.tty = tty; if (debug_level >= DEBUG_LEVEL_INFO) @@ -4297,6 +4304,7 @@ static struct mgsl_struct* mgsl_allocate_device(void) } /* end of mgsl_allocate_device()*/ static const struct tty_operations mgsl_ops = { + .install = mgsl_install, .open = mgsl_open, .close = mgsl_close, .write = mgsl_write, |