1 files changed, 71 insertions, 22 deletions

diff --git a/include/linux/tty_flip.h b/include/linux/tty_flip.h
index 767f62086bd9..af4fce98f64e 100644
--- a/include/linux/tty_flip.h
+++ b/include/linux/tty_flip.h
@@ -2,42 +2,91 @@
 #ifndef _LINUX_TTY_FLIP_H
 #define _LINUX_TTY_FLIP_H
 
-extern int tty_buffer_set_limit(struct tty_port *port, int limit);
-extern int tty_buffer_space_avail(struct tty_port *port);
-extern int tty_buffer_request_room(struct tty_port *port, size_t size);
-extern int tty_insert_flip_string_flags(struct tty_port *port,
-		const unsigned char *chars, const char *flags, size_t size);
-extern int tty_insert_flip_string_fixed_flag(struct tty_port *port,
-		const unsigned char *chars, char flag, size_t size);
-extern int tty_prepare_flip_string(struct tty_port *port,
-		unsigned char **chars, size_t size);
-extern void tty_flip_buffer_push(struct tty_port *port);
-void tty_schedule_flip(struct tty_port *port);
-int __tty_insert_flip_char(struct tty_port *port, unsigned char ch, char flag);
-
-static inline int tty_insert_flip_char(struct tty_port *port,
-					unsigned char ch, char flag)
+#include <linux/tty_buffer.h>
+#include <linux/tty_port.h>
+
+struct tty_ldisc;
+
+int tty_buffer_set_limit(struct tty_port *port, int limit);
+unsigned int tty_buffer_space_avail(struct tty_port *port);
+int tty_buffer_request_room(struct tty_port *port, size_t size);
+size_t __tty_insert_flip_string_flags(struct tty_port *port, const u8 *chars,
+				      const u8 *flags, bool mutable_flags,
+				      size_t size);
+size_t tty_prepare_flip_string(struct tty_port *port, u8 **chars, size_t size);
+void tty_flip_buffer_push(struct tty_port *port);
+
+/**
+ * tty_insert_flip_string_fixed_flag - add characters to the tty buffer
+ * @port: tty port
+ * @chars: characters
+ * @flag: flag value for each character
+ * @size: size
+ *
+ * Queue a series of bytes to the tty buffering. All the characters passed are
+ * marked with the supplied flag.
+ *
+ * Returns: the number added.
+ */
+static inline size_t tty_insert_flip_string_fixed_flag(struct tty_port *port,
+						       const u8 *chars, u8 flag,
+						       size_t size)
+{
+	return __tty_insert_flip_string_flags(port, chars, &flag, false, size);
+}
+
+/**
+ * tty_insert_flip_string_flags - add characters to the tty buffer
+ * @port: tty port
+ * @chars: characters
+ * @flags: flag bytes
+ * @size: size
+ *
+ * Queue a series of bytes to the tty buffering. For each character the flags
+ * array indicates the status of the character.
+ *
+ * Returns: the number added.
+ */
+static inline size_t tty_insert_flip_string_flags(struct tty_port *port,
+						  const u8 *chars,
+						  const u8 *flags, size_t size)
+{
+	return __tty_insert_flip_string_flags(port, chars, flags, true, size);
+}
+
+/**
+ * tty_insert_flip_char - add one character to the tty buffer
+ * @port: tty port
+ * @ch: character
+ * @flag: flag byte
+ *
+ * Queue a single byte @ch to the tty buffering, with an optional flag.
+ */
+static inline size_t tty_insert_flip_char(struct tty_port *port, u8 ch, u8 flag)
 {
 	struct tty_buffer *tb = port->buf.tail;
 	int change;
 
-	change = (tb->flags & TTYB_NORMAL) && (flag != TTY_NORMAL);
+	change = !tb->flags && (flag != TTY_NORMAL);
 	if (!change && tb->used < tb->size) {
-		if (~tb->flags & TTYB_NORMAL)
+		if (tb->flags)
 			*flag_buf_ptr(tb, tb->used) = flag;
 		*char_buf_ptr(tb, tb->used++) = ch;
 		return 1;
 	}
-	return __tty_insert_flip_char(port, ch, flag);
+	return __tty_insert_flip_string_flags(port, &ch, &flag, false, 1);
 }
 
-static inline int tty_insert_flip_string(struct tty_port *port,
-		const unsigned char *chars, size_t size)
+static inline size_t tty_insert_flip_string(struct tty_port *port,
+					    const u8 *chars, size_t size)
 {
 	return tty_insert_flip_string_fixed_flag(port, chars, TTY_NORMAL, size);
 }
 
-extern void tty_buffer_lock_exclusive(struct tty_port *port);
-extern void tty_buffer_unlock_exclusive(struct tty_port *port);
+size_t tty_ldisc_receive_buf(struct tty_ldisc *ld, const u8 *p, const u8 *f,
+			     size_t count);
+
+void tty_buffer_lock_exclusive(struct tty_port *port);
+void tty_buffer_unlock_exclusive(struct tty_port *port);
 
 #endif /* _LINUX_TTY_FLIP_H */