[PATCH 2/5] tty: remove TTY_DRIVER_MAGIC

From: наб
Date: Thu Sep 15 2022 - 21:55:22 EST

According to Greg, in the context of magic numbers as defined in
magic-number.rst, "the tty layer should not need this and I'll gladly
take patches"

Ref: https://lore.kernel.org/linux-doc/YyMlovoskUcHLEb7@xxxxxxxxx/
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@xxxxxxxxxxxxxxxxxx>
---
Documentation/process/magic-number.rst | 1 -
Documentation/translations/it_IT/process/magic-number.rst | 1 -
Documentation/translations/zh_CN/process/magic-number.rst | 1 -
Documentation/translations/zh_TW/process/magic-number.rst | 1 -
drivers/tty/tty_io.c | 1 -
include/linux/tty_driver.h | 5 -----
6 files changed, 10 deletions(-)

diff --git a/Documentation/process/magic-number.rst b/Documentation/process/magic-number.rst
index b4c7ec61437e..d47799ba0ca4 100644
--- a/Documentation/process/magic-number.rst
+++ b/Documentation/process/magic-number.rst
@@ -85,7 +85,6 @@ STRIP_MAGIC 0x5303 strip ``drivers/net/st
SIXPACK_MAGIC 0x5304 sixpack ``drivers/net/hamradio/6pack.h``
AX25_MAGIC 0x5316 ax_disp ``drivers/net/mkiss.h``
MGSL_MAGIC 0x5401 mgsl_info ``drivers/char/synclink.c``
-TTY_DRIVER_MAGIC 0x5402 tty_driver ``include/linux/tty_driver.h``
MGSLPC_MAGIC 0x5402 mgslpc_info ``drivers/char/pcmcia/synclink_cs.c``
USB_SERIAL_MAGIC 0x6702 usb_serial ``drivers/usb/serial/usb-serial.h``
FULL_DUPLEX_MAGIC 0x6969 ``drivers/net/ethernet/dec/tulip/de2104x.c``
diff --git a/Documentation/translations/it_IT/process/magic-number.rst b/Documentation/translations/it_IT/process/magic-number.rst
index bcb23384fefd..24022ab52ebb 100644
--- a/Documentation/translations/it_IT/process/magic-number.rst
+++ b/Documentation/translations/it_IT/process/magic-number.rst
@@ -91,7 +91,6 @@ STRIP_MAGIC 0x5303 strip ``drivers/net/st
SIXPACK_MAGIC 0x5304 sixpack ``drivers/net/hamradio/6pack.h``
AX25_MAGIC 0x5316 ax_disp ``drivers/net/mkiss.h``
MGSL_MAGIC 0x5401 mgsl_info ``drivers/char/synclink.c``
-TTY_DRIVER_MAGIC 0x5402 tty_driver ``include/linux/tty_driver.h``
MGSLPC_MAGIC 0x5402 mgslpc_info ``drivers/char/pcmcia/synclink_cs.c``
USB_SERIAL_MAGIC 0x6702 usb_serial ``drivers/usb/serial/usb-serial.h``
FULL_DUPLEX_MAGIC 0x6969 ``drivers/net/ethernet/dec/tulip/de2104x.c``
diff --git a/Documentation/translations/zh_CN/process/magic-number.rst b/Documentation/translations/zh_CN/process/magic-number.rst
index 6250087d36c5..811804996283 100644
--- a/Documentation/translations/zh_CN/process/magic-number.rst
+++ b/Documentation/translations/zh_CN/process/magic-number.rst
@@ -74,7 +74,6 @@ STRIP_MAGIC 0x5303 strip ``drivers/net/st
SIXPACK_MAGIC 0x5304 sixpack ``drivers/net/hamradio/6pack.h``
AX25_MAGIC 0x5316 ax_disp ``drivers/net/mkiss.h``
MGSL_MAGIC 0x5401 mgsl_info ``drivers/char/synclink.c``
-TTY_DRIVER_MAGIC 0x5402 tty_driver ``include/linux/tty_driver.h``
MGSLPC_MAGIC 0x5402 mgslpc_info ``drivers/char/pcmcia/synclink_cs.c``
USB_SERIAL_MAGIC 0x6702 usb_serial ``drivers/usb/serial/usb-serial.h``
FULL_DUPLEX_MAGIC 0x6969 ``drivers/net/ethernet/dec/tulip/de2104x.c``
diff --git a/Documentation/translations/zh_TW/process/magic-number.rst b/Documentation/translations/zh_TW/process/magic-number.rst
index fd169d760bbd..8e37e00590f5 100644
--- a/Documentation/translations/zh_TW/process/magic-number.rst
+++ b/Documentation/translations/zh_TW/process/magic-number.rst
@@ -77,7 +77,6 @@ STRIP_MAGIC 0x5303 strip ``drivers/net/st
SIXPACK_MAGIC 0x5304 sixpack ``drivers/net/hamradio/6pack.h``
AX25_MAGIC 0x5316 ax_disp ``drivers/net/mkiss.h``
MGSL_MAGIC 0x5401 mgsl_info ``drivers/char/synclink.c``
-TTY_DRIVER_MAGIC 0x5402 tty_driver ``include/linux/tty_driver.h``
MGSLPC_MAGIC 0x5402 mgslpc_info ``drivers/char/pcmcia/synclink_cs.c``
USB_SERIAL_MAGIC 0x6702 usb_serial ``drivers/usb/serial/usb-serial.h``
FULL_DUPLEX_MAGIC 0x6969 ``drivers/net/ethernet/dec/tulip/de2104x.c``
diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c
index 33962109bd10..d036fc59a2e8 100644
--- a/drivers/tty/tty_io.c
+++ b/drivers/tty/tty_io.c
@@ -3321,7 +3321,6 @@ struct tty_driver *__tty_alloc_driver(unsigned int lines, struct module *owner,
return ERR_PTR(-ENOMEM);

kref_init(&driver->kref);
- driver->magic = TTY_DRIVER_MAGIC;
driver->num = lines;
driver->owner = owner;
driver->flags = flags;
diff --git a/include/linux/tty_driver.h b/include/linux/tty_driver.h
index 4841d8069c07..b0421f5de8a6 100644
--- a/include/linux/tty_driver.h
+++ b/include/linux/tty_driver.h
@@ -396,7 +396,6 @@ struct tty_operations {
/**
* struct tty_driver -- driver for TTY devices
*
- * @magic: set to %TTY_DRIVER_MAGIC in __tty_alloc_driver()
* @kref: reference counting. Reaching zero frees all the internals and the
* driver.
* @cdevs: allocated/registered character /dev devices
@@ -432,7 +431,6 @@ struct tty_operations {
* @driver_name, @name, @type, @subtype, @init_termios, and @ops.
*/
struct tty_driver {
- int magic;
struct kref kref;
struct cdev **cdevs;
struct module *owner;
@@ -489,9 +487,6 @@ static inline void tty_set_operations(struct tty_driver *driver,
driver->ops = op;
}

-/* tty driver magic number */
-#define TTY_DRIVER_MAGIC 0x5402
-
/**
* DOC: TTY Driver Flags
*
--
2.30.2

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