TTY: convert more flipping functions

Now, we start converting tty buffer functions to actually use
tty_port. This will allow us to get rid of the need of tty pointer in
many call sites. Only tty_port will be needed and hence no more
tty_port_tty_get calls in those paths.

Now 4 string flipping ones are on turn:
* tty_insert_flip_string_flags
* tty_insert_flip_string_fixed_flag
* tty_prepare_flip_string
* tty_prepare_flip_string_flags

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

6 files changed, 23 insertions, 23 deletions

diff --git a/drivers/tty/cyclades.c b/drivers/tty/cyclades.c
index b85acc74eb0d..0b7573dbf439 100644
--- a/drivers/tty/cyclades.c
+++ b/drivers/tty/cyclades.c
@@ -968,7 +968,7 @@ static void cyz_handle_rx(struct cyclades_port *info, struct tty_struct *tty)
 		   for performance, but because of buffer boundaries, there
 		   may be several steps to the operation */
 			while (1) {
-				len = tty_prepare_flip_string(tty, &buf,
+				len = tty_prepare_flip_string(port, &buf,
 						char_count);
 				if (!len)
 					break;
diff --git a/drivers/tty/isicom.c b/drivers/tty/isicom.c
index 3205b2e9090b..e9fc15f00f48 100644
--- a/drivers/tty/isicom.c
+++ b/drivers/tty/isicom.c
@@ -650,8 +650,8 @@ static irqreturn_t isicom_interrupt(int irq, void *dev_id)
 			break;
 		}
 	} else {				/* Data   Packet */
-
-		count = tty_prepare_flip_string(tty, &rp, byte_count & ~1);
+		count = tty_prepare_flip_string(&port->port, &rp,
+				byte_count & ~1);
 		pr_debug("%s: Can rx %d of %d bytes.\n",
 			 __func__, count, byte_count);
 		word_count = count >> 1;
diff --git a/drivers/tty/moxa.c b/drivers/tty/moxa.c
index f9d28503bdec..fcaac4870d5f 100644
--- a/drivers/tty/moxa.c
+++ b/drivers/tty/moxa.c
@@ -1966,7 +1966,7 @@ static int MoxaPortReadData(struct moxa_port *port)
 			ofs = baseAddr + DynPage_addr + bufhead + head;
 			len = (tail >= head) ? (tail - head) :
 					(rx_mask + 1 - head);
-			len = tty_prepare_flip_string(tty, &dst,
+			len = tty_prepare_flip_string(&port->port, &dst,
 					min(len, count));
 			memcpy_fromio(dst, ofs, len);
 			head = (head + len) & rx_mask;
@@ -1978,7 +1978,7 @@ static int MoxaPortReadData(struct moxa_port *port)
 		while (count > 0) {
 			writew(pageno, baseAddr + Control_reg);
 			ofs = baseAddr + DynPage_addr + pageofs;
-			len = tty_prepare_flip_string(tty, &dst,
+			len = tty_prepare_flip_string(&port->port, &dst,
 					min(Page_size - pageofs, count));
 			memcpy_fromio(dst, ofs, len);
 
diff --git a/drivers/tty/rocket.c b/drivers/tty/rocket.c
index e42009a00529..77d7bc94afaa 100644
--- a/drivers/tty/rocket.c
+++ b/drivers/tty/rocket.c
@@ -399,7 +399,7 @@ static void rp_do_receive(struct r_port *info,
 		 * characters at time by doing repeated word IO
 		 * transfer.
 		 */
-		space = tty_prepare_flip_string(tty, &cbuf, ToRecv);
+		space = tty_prepare_flip_string(&info->port, &cbuf, ToRecv);
 		if (space < ToRecv) {
 #ifdef ROCKET_DEBUG_RECEIVE
 			printk(KERN_INFO "rp_do_receive:insufficient space ToRecv=%d space=%d\n", ToRecv, space);
diff --git a/drivers/tty/serial/msm_smd_tty.c b/drivers/tty/serial/msm_smd_tty.c
index 925d1fa153db..b43b4ec39269 100644
--- a/drivers/tty/serial/msm_smd_tty.c
+++ b/drivers/tty/serial/msm_smd_tty.c
@@ -70,7 +70,7 @@ static void smd_tty_notify(void *priv, unsigned event)
 		if (avail == 0)
 			break;
 
-		avail = tty_prepare_flip_string(tty, &ptr, avail);
+		avail = tty_prepare_flip_string(&info->port, &ptr, avail);
 
 		if (smd_read(info->ch, ptr, avail) != avail) {
 			/* shouldn't be possible since we're in interrupt
diff --git a/drivers/tty/tty_buffer.c b/drivers/tty/tty_buffer.c
index f897332fb4ee..31873e42602a 100644
--- a/drivers/tty/tty_buffer.c
+++ b/drivers/tty/tty_buffer.c
@@ -257,7 +257,7 @@ EXPORT_SYMBOL_GPL(tty_buffer_request_room);
 
 /**
  *	tty_insert_flip_string_fixed_flag - Add characters to the tty buffer
- *	@tty: tty structure
+ *	@port: tty port
  *	@chars: characters
  *	@flag: flag value for each character
  *	@size: size
@@ -268,10 +268,10 @@ EXPORT_SYMBOL_GPL(tty_buffer_request_room);
  *	Locking: Called functions may take port->buf.lock
  */
 
-int tty_insert_flip_string_fixed_flag(struct tty_struct *tty,
+int tty_insert_flip_string_fixed_flag(struct tty_port *port,
 		const unsigned char *chars, char flag, size_t size)
 {
-	struct tty_bufhead *buf = &tty->port->buf;
+	struct tty_bufhead *buf = &port->buf;
 	int copied = 0;
 	do {
 		int goal = min_t(size_t, size - copied, TTY_BUFFER_PAGE);
@@ -280,7 +280,7 @@ int tty_insert_flip_string_fixed_flag(struct tty_struct *tty,
 		struct tty_buffer *tb;
 
 		spin_lock_irqsave(&buf->lock, flags);
-		space = __tty_buffer_request_room(tty->port, goal);
+		space = __tty_buffer_request_room(port, goal);
 		tb = buf->tail;
 		/* If there is no space then tb may be NULL */
 		if (unlikely(space == 0)) {
@@ -302,7 +302,7 @@ EXPORT_SYMBOL(tty_insert_flip_string_fixed_flag);
 
 /**
  *	tty_insert_flip_string_flags	-	Add characters to the tty buffer
- *	@tty: tty structure
+ *	@port: tty port
  *	@chars: characters
  *	@flags: flag bytes
  *	@size: size
@@ -314,10 +314,10 @@ EXPORT_SYMBOL(tty_insert_flip_string_fixed_flag);
  *	Locking: Called functions may take port->buf.lock
  */
 
-int tty_insert_flip_string_flags(struct tty_struct *tty,
+int tty_insert_flip_string_flags(struct tty_port *port,
 		const unsigned char *chars, const char *flags, size_t size)
 {
-	struct tty_bufhead *buf = &tty->port->buf;
+	struct tty_bufhead *buf = &port->buf;
 	int copied = 0;
 	do {
 		int goal = min_t(size_t, size - copied, TTY_BUFFER_PAGE);
@@ -326,7 +326,7 @@ int tty_insert_flip_string_flags(struct tty_struct *tty,
 		struct tty_buffer *tb;
 
 		spin_lock_irqsave(&buf->lock, __flags);
-		space = __tty_buffer_request_room(tty->port, goal);
+		space = __tty_buffer_request_room(port, goal);
 		tb = buf->tail;
 		/* If there is no space then tb may be NULL */
 		if (unlikely(space == 0)) {
@@ -376,7 +376,7 @@ EXPORT_SYMBOL(tty_schedule_flip);
 
 /**
  *	tty_prepare_flip_string		-	make room for characters
- *	@tty: tty
+ *	@port: tty port
  *	@chars: return pointer for character write area
  *	@size: desired size
  *
@@ -389,16 +389,16 @@ EXPORT_SYMBOL(tty_schedule_flip);
  *	Locking: May call functions taking port->buf.lock
  */
 
-int tty_prepare_flip_string(struct tty_struct *tty, unsigned char **chars,
+int tty_prepare_flip_string(struct tty_port *port, unsigned char **chars,
 		size_t size)
 {
-	struct tty_bufhead *buf = &tty->port->buf;
+	struct tty_bufhead *buf = &port->buf;
 	int space;
 	unsigned long flags;
 	struct tty_buffer *tb;
 
 	spin_lock_irqsave(&buf->lock, flags);
-	space = __tty_buffer_request_room(tty->port, size);
+	space = __tty_buffer_request_room(port, size);
 
 	tb = buf->tail;
 	if (likely(space)) {
@@ -413,7 +413,7 @@ EXPORT_SYMBOL_GPL(tty_prepare_flip_string);
 
 /**
  *	tty_prepare_flip_string_flags	-	make room for characters
- *	@tty: tty
+ *	@port: tty port
  *	@chars: return pointer for character write area
  *	@flags: return pointer for status flag write area
  *	@size: desired size
@@ -427,16 +427,16 @@ EXPORT_SYMBOL_GPL(tty_prepare_flip_string);
  *	Locking: May call functions taking port->buf.lock
  */
 
-int tty_prepare_flip_string_flags(struct tty_struct *tty,
+int tty_prepare_flip_string_flags(struct tty_port *port,
 			unsigned char **chars, char **flags, size_t size)
 {
-	struct tty_bufhead *buf = &tty->port->buf;
+	struct tty_bufhead *buf = &port->buf;
 	int space;
 	unsigned long __flags;
 	struct tty_buffer *tb;
 
 	spin_lock_irqsave(&buf->lock, __flags);
-	space = __tty_buffer_request_room(tty->port, size);
+	space = __tty_buffer_request_room(port, size);
 
 	tb = buf->tail;
 	if (likely(space)) {