From 331b831983f9d706f4a40d08a996d5c2c7a6ea7b Mon Sep 17 00:00:00 2001
From: Greg Kroah-Hartman <gregkh@suse.de>
Date: Mon, 20 Jun 2005 21:15:16 -0700
Subject: [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>

diff --git a/arch/cris/arch-v10/kernel/debugport.c b/arch/cris/arch-v10/kernel/debugport.c
index f3a85b7..dde813e 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 ffc1ebf..3dc587e 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 98b25fa..1e113d0 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 2db55d1..8619542 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 d3a5092..f373d01 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 ed511ec..0ac1318 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 ebe1158..6c79ff3 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 9f8628b..bd2e426 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 e7f0f15..77579f8 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 43c8c9f..7d26a3e 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 8970014..2364c39 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 84d70d8..7dc1e67 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 582d926..7f27b35 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 a0b9edd..3670d77 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 2c8e5c1..416acac8 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 db7f54b..f466f89 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 0bd31f0..58c961c 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 afb3c52..5fdc366 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);
-- 
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