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authorJiri Slaby <jslaby@suse.cz>2013-01-03 18:53:02 +0400
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-01-16 10:17:29 +0400
commit2f69335710884ae6112fc8196ebe29b5cda7b79b (patch)
treec97bec97e703faace437235d3bcbbf80c078ad21 /drivers/tty
parent227434f8986c3827a1faedd1feb437acd6285315 (diff)
downloadlinux-2f69335710884ae6112fc8196ebe29b5cda7b79b.tar.xz
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')
-rw-r--r--drivers/tty/cyclades.c2
-rw-r--r--drivers/tty/isicom.c4
-rw-r--r--drivers/tty/moxa.c4
-rw-r--r--drivers/tty/rocket.c2
-rw-r--r--drivers/tty/serial/msm_smd_tty.c2
-rw-r--r--drivers/tty/tty_buffer.c32
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)) {