[PATCH] devfs: Rename TTY_DRIVER_NO_DEVFS to TTY_DRIVER_DYNAMIC_DEV

I've always found this flag confusing.  Now that devfs is no longer around, it
has been renamed, and the documentation for when this flag should be used has
been updated.

Also fixes all drivers that use this flag.

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

18 files changed, 32 insertions, 25 deletions

diff --git a/arch/cris/arch-v10/kernel/debugport.c b/arch/cris/arch-v10/kernel/debugport.c
index f3a85b77c17e..dde813e16294 100644
--- a/arch/cris/arch-v10/kernel/debugport.c
+++ b/arch/cris/arch-v10/kernel/debugport.c
@@ -541,7 +541,7 @@ init_dummy_console(void)
         dummy_driver.init_termios = tty_std_termios;
         dummy_driver.init_termios.c_cflag =
                 B115200 | CS8 | CREAD | HUPCL | CLOCAL; /* is normally B9600 default... */
-        dummy_driver.flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_NO_DEVFS;
+        dummy_driver.flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
 
         dummy_driver.open = dummy_open;
         dummy_driver.close = dummy_close;
diff --git a/arch/cris/arch-v32/kernel/debugport.c b/arch/cris/arch-v32/kernel/debugport.c
index ffc1ebf2dfee..3dc587e6201a 100644
--- a/arch/cris/arch-v32/kernel/debugport.c
+++ b/arch/cris/arch-v32/kernel/debugport.c
@@ -353,7 +353,7 @@ init_dummy_console(void)
         dummy_driver.init_termios = tty_std_termios;
         dummy_driver.init_termios.c_cflag =
                 B115200 | CS8 | CREAD | HUPCL | CLOCAL; /* is normally B9600 default... */
-        dummy_driver.flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_NO_DEVFS;
+        dummy_driver.flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
 
         dummy_driver.open = dummy_open;
         dummy_driver.close = dummy_close;
diff --git a/arch/ppc/4xx_io/serial_sicc.c b/arch/ppc/4xx_io/serial_sicc.c
index 98b25fa0049a..1e113d0f59b8 100644
--- a/arch/ppc/4xx_io/serial_sicc.c
+++ b/arch/ppc/4xx_io/serial_sicc.c
@@ -1758,7 +1758,7 @@ int __init siccuart_init(void)
     siccnormal_driver->subtype = SERIAL_TYPE_NORMAL;
     siccnormal_driver->init_termios = tty_std_termios;
     siccnormal_driver->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL;
-    siccnormal_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_NO_DEVFS;
+    siccnormal_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
     tty_set_operations(siccnormal_driver, &sicc_ops);
 
     if (tty_register_driver(siccnormal_driver))
diff --git a/drivers/char/ip2/ip2main.c b/drivers/char/ip2/ip2main.c
index 2db55d1f0403..8619542766cb 100644
--- a/drivers/char/ip2/ip2main.c
+++ b/drivers/char/ip2/ip2main.c
@@ -678,7 +678,7 @@ ip2_loadmain(int *iop, int *irqp, unsigned char *firmware, int firmsize)
         ip2_tty_driver->subtype              = SERIAL_TYPE_NORMAL;
         ip2_tty_driver->init_termios         = tty_std_termios;
         ip2_tty_driver->init_termios.c_cflag = B9600|CS8|CREAD|HUPCL|CLOCAL;
-        ip2_tty_driver->flags                = TTY_DRIVER_REAL_RAW | TTY_DRIVER_NO_DEVFS;
+        ip2_tty_driver->flags                = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
         tty_set_operations(ip2_tty_driver, &ip2_ops);
 
         ip2trace (ITRC_NO_PORT, ITRC_INIT, 3, 0 );
diff --git a/drivers/char/pty.c b/drivers/char/pty.c
index d3a5092402c2..f373d0155a77 100644
--- a/drivers/char/pty.c
+++ b/drivers/char/pty.c
@@ -368,7 +368,7 @@ static void __init unix98_pty_init(void)
         ptm_driver->init_termios.c_cflag = B38400 | CS8 | CREAD;
         ptm_driver->init_termios.c_lflag = 0;
         ptm_driver->flags = TTY_DRIVER_RESET_TERMIOS | TTY_DRIVER_REAL_RAW |
-                TTY_DRIVER_NO_DEVFS | TTY_DRIVER_DEVPTS_MEM;
+                TTY_DRIVER_DYNAMIC_DEV | TTY_DRIVER_DEVPTS_MEM;
         ptm_driver->other = pts_driver;
         tty_set_operations(ptm_driver, &pty_ops);
         ptm_driver->ioctl = pty_unix98_ioctl;
@@ -383,7 +383,7 @@ static void __init unix98_pty_init(void)
         pts_driver->init_termios = tty_std_termios;
         pts_driver->init_termios.c_cflag = B38400 | CS8 | CREAD;
         pts_driver->flags = TTY_DRIVER_RESET_TERMIOS | TTY_DRIVER_REAL_RAW |
-                TTY_DRIVER_NO_DEVFS | TTY_DRIVER_DEVPTS_MEM;
+                TTY_DRIVER_DYNAMIC_DEV | TTY_DRIVER_DEVPTS_MEM;
         pts_driver->other = ptm_driver;
         tty_set_operations(pts_driver, &pty_ops);
         
diff --git a/drivers/char/rocket.c b/drivers/char/rocket.c
index ed511ec9b578..0ac131881322 100644
--- a/drivers/char/rocket.c
+++ b/drivers/char/rocket.c
@@ -2426,7 +2426,7 @@ static int __init rp_init(void)
          */
 
         rocket_driver->owner = THIS_MODULE;
-        rocket_driver->flags = TTY_DRIVER_NO_DEVFS;
+        rocket_driver->flags = TTY_DRIVER_DYNAMIC_DEV;
         rocket_driver->name = "ttyR";
         rocket_driver->driver_name = "Comtrol RocketPort";
         rocket_driver->major = TTY_ROCKET_MAJOR;
@@ -2437,7 +2437,7 @@ static int __init rp_init(void)
         rocket_driver->init_termios.c_cflag =
             B9600 | CS8 | CREAD | HUPCL | CLOCAL;
 #ifdef ROCKET_SOFT_FLOW
-        rocket_driver->flags |= TTY_DRIVER_REAL_RAW | TTY_DRIVER_NO_DEVFS;
+        rocket_driver->flags |= TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
 #endif
         tty_set_operations(rocket_driver, &rocket_ops);
 
diff --git a/drivers/char/tty_io.c b/drivers/char/tty_io.c
index ebe1158e6c6e..6c79ff3030fa 100644
--- a/drivers/char/tty_io.c
+++ b/drivers/char/tty_io.c
@@ -2963,8 +2963,8 @@ static struct class *tty_class;
  * Returns a pointer to the class device (or ERR_PTR(-EFOO) on error).
  *
  * This call is required to be made to register an individual tty device if
- * the tty driver's flags have the TTY_DRIVER_NO_DEVFS bit set.  If that
- * bit is not set, this function should not be called.
+ * the tty driver's flags have the TTY_DRIVER_DYNAMIC_DEV bit set.  If that
+ * bit is not set, this function should not be called by a tty driver.
  */
 struct class_device *tty_register_device(struct tty_driver *driver,
                                          unsigned index, struct device *device)
@@ -3117,7 +3117,7 @@ int tty_register_driver(struct tty_driver *driver)
         
         list_add(&driver->tty_drivers, &tty_drivers);
         
-        if ( !(driver->flags & TTY_DRIVER_NO_DEVFS) ) {
+        if ( !(driver->flags & TTY_DRIVER_DYNAMIC_DEV) ) {
                 for(i = 0; i < driver->num; i++)
                     tty_register_device(driver, i, NULL);
         }
@@ -3160,7 +3160,7 @@ int tty_unregister_driver(struct tty_driver *driver)
                         driver->termios_locked[i] = NULL;
                         kfree(tp);
                 }
-                if (!(driver->flags & TTY_DRIVER_NO_DEVFS))
+                if (!(driver->flags & TTY_DRIVER_DYNAMIC_DEV))
                         tty_unregister_device(driver, i);
         }
         p = driver->ttys;
diff --git a/drivers/isdn/gigaset/interface.c b/drivers/isdn/gigaset/interface.c
index 9f8628bbdf56..bd2e4267528e 100644
--- a/drivers/isdn/gigaset/interface.c
+++ b/drivers/isdn/gigaset/interface.c
@@ -691,7 +691,7 @@ void gigaset_if_initdriver(struct gigaset_driver *drv, const char *procname,
         tty->major =            GIG_MAJOR,
         tty->type =             TTY_DRIVER_TYPE_SERIAL,
         tty->subtype =          SERIAL_TYPE_NORMAL,
-        tty->flags =            TTY_DRIVER_REAL_RAW | TTY_DRIVER_NO_DEVFS,
+        tty->flags =            TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
 
         tty->driver_name =      procname;
         tty->name =             devname;
diff --git a/drivers/isdn/i4l/isdn_tty.c b/drivers/isdn/i4l/isdn_tty.c
index e7f0f15c7353..77579f82aede 100644
--- a/drivers/isdn/i4l/isdn_tty.c
+++ b/drivers/isdn/i4l/isdn_tty.c
@@ -1896,7 +1896,7 @@ isdn_tty_modem_init(void)
         m->tty_modem->subtype = SERIAL_TYPE_NORMAL;
         m->tty_modem->init_termios = tty_std_termios;
         m->tty_modem->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL;
-        m->tty_modem->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_NO_DEVFS;
+        m->tty_modem->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
         m->tty_modem->driver_name = "isdn_tty";
         tty_set_operations(m->tty_modem, &modem_ops);
         retval = tty_register_driver(m->tty_modem);
diff --git a/drivers/s390/char/tty3270.c b/drivers/s390/char/tty3270.c
index 43c8c9f5f301..7d26a3e4cb80 100644
--- a/drivers/s390/char/tty3270.c
+++ b/drivers/s390/char/tty3270.c
@@ -1792,7 +1792,7 @@ tty3270_init(void)
         driver->type = TTY_DRIVER_TYPE_SYSTEM;
         driver->subtype = SYSTEM_TYPE_TTY;
         driver->init_termios = tty_std_termios;
-        driver->flags = TTY_DRIVER_RESET_TERMIOS | TTY_DRIVER_NO_DEVFS;
+        driver->flags = TTY_DRIVER_RESET_TERMIOS | TTY_DRIVER_DYNAMIC_DEV;
         tty_set_operations(driver, &tty3270_ops);
         ret = tty_register_driver(driver);
         if (ret) {
diff --git a/drivers/serial/crisv10.c b/drivers/serial/crisv10.c
index 89700141f87e..2364c3949981 100644
--- a/drivers/serial/crisv10.c
+++ b/drivers/serial/crisv10.c
@@ -4884,7 +4884,7 @@ rs_init(void)
         driver->init_termios = tty_std_termios;
         driver->init_termios.c_cflag =
                 B115200 | CS8 | CREAD | HUPCL | CLOCAL; /* is normally B9600 default... */
-        driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_NO_DEVFS;
+        driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
         driver->termios = serial_termios;
         driver->termios_locked = serial_termios_locked;
 
diff --git a/drivers/serial/serial_core.c b/drivers/serial/serial_core.c
index 84d70d855598..7dc1e67b6851 100644
--- a/drivers/serial/serial_core.c
+++ b/drivers/serial/serial_core.c
@@ -2160,7 +2160,7 @@ int uart_register_driver(struct uart_driver *drv)
         normal->subtype         = SERIAL_TYPE_NORMAL;
         normal->init_termios    = tty_std_termios;
         normal->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL;
-        normal->flags           = TTY_DRIVER_REAL_RAW | TTY_DRIVER_NO_DEVFS;
+        normal->flags           = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
         normal->driver_state    = drv;
         tty_set_operations(normal, &uart_ops);
 
diff --git a/drivers/tc/zs.c b/drivers/tc/zs.c
index 582d926cd000..7f27b356eaf7 100644
--- a/drivers/tc/zs.c
+++ b/drivers/tc/zs.c
@@ -1753,7 +1753,7 @@ int __init zs_init(void)
         serial_driver->init_termios = tty_std_termios;
         serial_driver->init_termios.c_cflag =
                 B9600 | CS8 | CREAD | HUPCL | CLOCAL;
-        serial_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_NO_DEVFS;
+        serial_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
         tty_set_operations(serial_driver, &serial_ops);
 
         if (tty_register_driver(serial_driver))
diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c
index a0b9eddd98e4..3670d77e912c 100644
--- a/drivers/usb/class/cdc-acm.c
+++ b/drivers/usb/class/cdc-acm.c
@@ -1149,7 +1149,7 @@ static int __init acm_init(void)
         acm_tty_driver->minor_start = 0,
         acm_tty_driver->type = TTY_DRIVER_TYPE_SERIAL,
         acm_tty_driver->subtype = SERIAL_TYPE_NORMAL,
-        acm_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_NO_DEVFS,
+        acm_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
         acm_tty_driver->init_termios = tty_std_termios;
         acm_tty_driver->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL;
         tty_set_operations(acm_tty_driver, &acm_ops);
diff --git a/drivers/usb/gadget/serial.c b/drivers/usb/gadget/serial.c
index 2c8e5c10eb9f..416acac879df 100644
--- a/drivers/usb/gadget/serial.c
+++ b/drivers/usb/gadget/serial.c
@@ -592,7 +592,7 @@ static int __init gs_module_init(void)
         gs_tty_driver->minor_start = GS_MINOR_START;
         gs_tty_driver->type = TTY_DRIVER_TYPE_SERIAL;
         gs_tty_driver->subtype = SERIAL_TYPE_NORMAL;
-        gs_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_NO_DEVFS;
+        gs_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
         gs_tty_driver->init_termios = tty_std_termios;
         gs_tty_driver->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL;
         tty_set_operations(gs_tty_driver, &gs_tty_ops);
diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c
index db7f54b0d856..f466f89eeb6d 100644
--- a/drivers/usb/serial/usb-serial.c
+++ b/drivers/usb/serial/usb-serial.c
@@ -1064,7 +1064,7 @@ static int __init usb_serial_init(void)
         usb_serial_tty_driver->minor_start = 0;
         usb_serial_tty_driver->type = TTY_DRIVER_TYPE_SERIAL;
         usb_serial_tty_driver->subtype = SERIAL_TYPE_NORMAL;
-        usb_serial_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_NO_DEVFS;
+        usb_serial_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
         usb_serial_tty_driver->init_termios = tty_std_termios;
         usb_serial_tty_driver->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL;
         tty_set_operations(usb_serial_tty_driver, &serial_ops);
diff --git a/include/linux/tty_driver.h b/include/linux/tty_driver.h
index 0bd31f0830f9..58c961c9e170 100644
--- a/include/linux/tty_driver.h
+++ b/include/linux/tty_driver.h
@@ -241,8 +241,15 @@ void tty_set_operations(struct tty_driver *driver, struct tty_operations *op);
  *      is also a promise, if the above case is true, not to signal
  *      overruns, either.)
  *
- * TTY_DRIVER_NO_DEVFS --- if set, do not create devfs entries. This
- *      is only used by tty_register_driver().
+ * TTY_DRIVER_DYNAMIC_DEV --- if set, the individual tty devices need
+ *      to be registered with a call to tty_register_driver() when the
+ *      device is found in the system and unregistered with a call to
+ *      tty_unregister_device() so the devices will be show up
+ *      properly in sysfs.  If not set, driver->num entries will be
+ *      created by the tty core in sysfs when tty_register_driver() is
+ *      called.  This is to be used by drivers that have tty devices
+ *      that can appear and disappear while the main tty driver is
+ *      registered with the tty core.
  *
  * TTY_DRIVER_DEVPTS_MEM -- don't use the standard arrays, instead
  *      use dynamic memory keyed through the devpts filesystem.  This
@@ -251,7 +258,7 @@ void tty_set_operations(struct tty_driver *driver, struct tty_operations *op);
 #define TTY_DRIVER_INSTALLED            0x0001
 #define TTY_DRIVER_RESET_TERMIOS        0x0002
 #define TTY_DRIVER_REAL_RAW             0x0004
-#define TTY_DRIVER_NO_DEVFS             0x0008
+#define TTY_DRIVER_DYNAMIC_DEV          0x0008
 #define TTY_DRIVER_DEVPTS_MEM           0x0010
 
 /* tty driver types */
diff --git a/net/bluetooth/rfcomm/tty.c b/net/bluetooth/rfcomm/tty.c
index afb3c524db34..5fdc36678621 100644
--- a/net/bluetooth/rfcomm/tty.c
+++ b/net/bluetooth/rfcomm/tty.c
@@ -1030,7 +1030,7 @@ int rfcomm_init_ttys(void)
         rfcomm_tty_driver->minor_start  = RFCOMM_TTY_MINOR;
         rfcomm_tty_driver->type         = TTY_DRIVER_TYPE_SERIAL;
         rfcomm_tty_driver->subtype      = SERIAL_TYPE_NORMAL;
-        rfcomm_tty_driver->flags        = TTY_DRIVER_REAL_RAW | TTY_DRIVER_NO_DEVFS;
+        rfcomm_tty_driver->flags        = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
         rfcomm_tty_driver->init_termios = tty_std_termios;
         rfcomm_tty_driver->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL;
         tty_set_operations(rfcomm_tty_driver, &rfcomm_ops);