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| author | Jiri Slaby <jslaby@suse.cz> | 2012-10-18 22:26:29 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-10-22 16:50:13 -0700 |
| commit | f11afb61247016162aa92225a337c1575556c9d9 (patch) | |
| tree | ba77670c1ac540bb284e6975d6996b21ad23a272 /drivers | |
| parent | 162b97cfa21f816f39ede1944f2a4220e3cf8969 (diff) | |
| download | linux-f11afb61247016162aa92225a337c1575556c9d9.tar.gz linux-f11afb61247016162aa92225a337c1575556c9d9.tar.bz2 linux-f11afb61247016162aa92225a337c1575556c9d9.zip | |
TTY: devpts, do not set driver_data
The goal is to stop setting and using tty->driver_data in devpts code.
It should be used solely by the driver's code, pty in this case.
Now driver_data are managed only in the pty driver. devpts_pty_new is
switched to accept what we used to dig out of tty_struct, i.e. device
node number and index.
This also removes a note about driver_data being set outside of the
driver.
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')
| -rw-r--r-- | drivers/tty/pty.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/drivers/tty/pty.c b/drivers/tty/pty.c index 9985b451e937..559e5b27941a 100644 --- a/drivers/tty/pty.c +++ b/drivers/tty/pty.c @@ -4,9 +4,6 @@ * Added support for a Unix98-style ptmx device. * -- C. Scott Ananian <cananian@alumni.princeton.edu>, 14-Jan-1998 * - * When reading this code see also fs/devpts. In particular note that the - * driver_data field is used by the devpts side as a binding to the devpts - * inode. */ #include <linux/module.h> @@ -59,7 +56,7 @@ static void pty_close(struct tty_struct *tty, struct file *filp) #ifdef CONFIG_UNIX98_PTYS if (tty->driver == ptm_driver) { mutex_lock(&devpts_mutex); - devpts_pty_kill(tty->link); + devpts_pty_kill(tty->link->driver_data); mutex_unlock(&devpts_mutex); } #endif @@ -651,7 +648,9 @@ static int ptmx_open(struct inode *inode, struct file *filp) tty_add_file(tty, filp); - slave_inode = devpts_pty_new(inode, tty->link); + slave_inode = devpts_pty_new(inode, + MKDEV(UNIX98_PTY_SLAVE_MAJOR, index), index, + tty->link); if (IS_ERR(slave_inode)) { retval = PTR_ERR(slave_inode); goto err_release; @@ -662,6 +661,7 @@ static int ptmx_open(struct inode *inode, struct file *filp) goto err_release; tty_unlock(tty); + tty->link->driver_data = slave_inode; return 0; err_release: tty_unlock(tty); |