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authorJiri Slaby <jslaby@suse.cz>2013-01-03 15:53:02 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-01-15 22:17:29 -0800
commit2f69335710884ae6112fc8196ebe29b5cda7b79b (patch)
treec97bec97e703faace437235d3bcbbf80c078ad21 /drivers/tty/tty_buffer.c
parent227434f8986c3827a1faedd1feb437acd6285315 (diff)
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>
Diffstat (limited to 'drivers/tty/tty_buffer.c')
-rw-r--r--drivers/tty/tty_buffer.c32
1 files changed, 16 insertions, 16 deletions
diff --git a/drivers/tty/tty_buffer.c b/drivers/tty/tty_buffer.c
index f897332fb4e..31873e42602 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)) {