*
* Note: Do not call this function directly, call tty_driver_flush_chars
*
- * int (*write_room)(struct tty_struct *tty);
+ * unsigned int (*write_room)(struct tty_struct *tty);
*
* This routine returns the numbers of characters the tty driver
* will accept for queuing to be written. This number is subject
* the line discipline are close to full, and it should somehow
* signal that no more characters should be sent to the tty.
*
- * Optional: Always invoke via tty_throttle(), called under the
+ * Optional: Always invoke via tty_throttle_safe(), called under the
* termios lock.
*
* void (*unthrottle)(struct tty_struct * tty);
* This routine notifies the tty driver that it should stop
* outputting characters to the tty device.
*
- * Called with ->flow_lock held. Serialized with start() method.
+ * Called with ->flow.lock held. Serialized with start() method.
*
* Optional:
*
* This routine notifies the tty driver that it resume sending
* characters to the tty device.
*
- * Called with ->flow_lock held. Serialized with stop() method.
+ * Called with ->flow.lock held. Serialized with stop() method.
*
* Optional:
*
const unsigned char *buf, int count);
int (*put_char)(struct tty_struct *tty, unsigned char ch);
void (*flush_chars)(struct tty_struct *tty);
- int (*write_room)(struct tty_struct *tty);
- int (*chars_in_buffer)(struct tty_struct *tty);
+ unsigned int (*write_room)(struct tty_struct *tty);
+ unsigned int (*chars_in_buffer)(struct tty_struct *tty);
int (*ioctl)(struct tty_struct *tty,
unsigned int cmd, unsigned long arg);
long (*compat_ioctl)(struct tty_struct *tty,