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-rw-r--r--include/linux/tty.h10
1 files changed, 2 insertions, 8 deletions
diff --git a/include/linux/tty.h b/include/linux/tty.h
index 7b0a5d478ef6..730c3301d710 100644
--- a/include/linux/tty.h
+++ b/include/linux/tty.h
@@ -122,8 +122,6 @@ struct tty_operations;
/**
* struct tty_struct - state associated with a tty while open
*
- * @magic: magic value set early in @alloc_tty_struct to %TTY_MAGIC, for
- * debugging purposes
* @kref: reference counting by tty_kref_get() and tty_kref_put(), reaching zero
* frees the structure
* @dev: class device or %NULL (e.g. ptys, serdev)
@@ -193,7 +191,6 @@ struct tty_operations;
* &struct tty_port.
*/
struct tty_struct {
- int magic;
struct kref kref;
struct device *dev;
struct tty_driver *driver;
@@ -260,9 +257,6 @@ struct tty_file_private {
struct list_head list;
};
-/* tty magic number */
-#define TTY_MAGIC 0x5401
-
/**
* DOC: TTY Struct Flags
*
@@ -434,7 +428,7 @@ int tty_hung_up_p(struct file *filp);
void do_SAK(struct tty_struct *tty);
void __do_SAK(struct tty_struct *tty);
void no_tty(void);
-speed_t tty_termios_baud_rate(struct ktermios *termios);
+speed_t tty_termios_baud_rate(const struct ktermios *termios);
void tty_termios_encode_baud_rate(struct ktermios *termios, speed_t ibaud,
speed_t obaud);
void tty_encode_baud_rate(struct tty_struct *tty, speed_t ibaud,
@@ -458,7 +452,7 @@ static inline speed_t tty_get_baud_rate(struct tty_struct *tty)
unsigned char tty_get_char_size(unsigned int cflag);
unsigned char tty_get_frame_size(unsigned int cflag);
-void tty_termios_copy_hw(struct ktermios *new, struct ktermios *old);
+void tty_termios_copy_hw(struct ktermios *new, const struct ktermios *old);
int tty_termios_hw_change(const struct ktermios *a, const struct ktermios *b);
int tty_set_termios(struct tty_struct *tty, struct ktermios *kt);