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authorJiri Slaby <jslaby@suse.cz>2013-01-03 18:53:01 +0400
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-01-16 10:17:28 +0400
commit227434f8986c3827a1faedd1feb437acd6285315 (patch)
treee96f6c6a800b81d096be73c1b7943c7aa24aa632 /drivers/isdn/i4l
parentea28fd56fcde69af768135e428093f94c5ca6a88 (diff)
downloadlinux-227434f8986c3827a1faedd1feb437acd6285315.tar.xz
TTY: switch tty_buffer_request_room to tty_port
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. Here we start with tty_buffer_request_room. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/isdn/i4l')
-rw-r--r--drivers/isdn/i4l/isdn_common.c3
-rw-r--r--drivers/isdn/i4l/isdn_tty.c12
2 files changed, 9 insertions, 6 deletions
diff --git a/drivers/isdn/i4l/isdn_common.c b/drivers/isdn/i4l/isdn_common.c
index e2a945ee9f05..7093169ee0c9 100644
--- a/drivers/isdn/i4l/isdn_common.c
+++ b/drivers/isdn/i4l/isdn_common.c
@@ -878,6 +878,7 @@ isdn_readbchan(int di, int channel, u_char *buf, u_char *fp, int len, wait_queue
int
isdn_readbchan_tty(int di, int channel, struct tty_struct *tty, int cisco_hack)
{
+ struct tty_port *port = tty->port;
int count;
int count_pull;
int count_put;
@@ -891,7 +892,7 @@ isdn_readbchan_tty(int di, int channel, struct tty_struct *tty, int cisco_hack)
if (skb_queue_empty(&dev->drv[di]->rpqueue[channel]))
return 0;
- len = tty_buffer_request_room(tty, dev->drv[di]->rcvcount[channel]);
+ len = tty_buffer_request_room(port, dev->drv[di]->rcvcount[channel]);
if (len == 0)
return len;
diff --git a/drivers/isdn/i4l/isdn_tty.c b/drivers/isdn/i4l/isdn_tty.c
index e09dc8a5e743..4f5bcee7cf32 100644
--- a/drivers/isdn/i4l/isdn_tty.c
+++ b/drivers/isdn/i4l/isdn_tty.c
@@ -60,6 +60,7 @@ static int si2bit[8] =
static int
isdn_tty_try_read(modem_info *info, struct sk_buff *skb)
{
+ struct tty_port *port = &info->port;
int c;
int len;
struct tty_struct *tty;
@@ -68,7 +69,7 @@ isdn_tty_try_read(modem_info *info, struct sk_buff *skb)
if (!info->online)
return 0;
- tty = info->port.tty;
+ tty = port->tty;
if (!tty)
return 0;
@@ -81,7 +82,7 @@ isdn_tty_try_read(modem_info *info, struct sk_buff *skb)
#endif
;
- c = tty_buffer_request_room(tty, len);
+ c = tty_buffer_request_room(port, len);
if (c < len)
return 0;
@@ -2230,6 +2231,7 @@ void
isdn_tty_at_cout(char *msg, modem_info *info)
{
struct tty_struct *tty;
+ struct tty_port *port = &info->port;
atemu *m = &info->emu;
char *p;
char c;
@@ -2246,15 +2248,15 @@ isdn_tty_at_cout(char *msg, modem_info *info)
l = strlen(msg);
spin_lock_irqsave(&info->readlock, flags);
- tty = info->port.tty;
- if ((info->port.flags & ASYNC_CLOSING) || (!tty)) {
+ tty = port->tty;
+ if ((port->flags & ASYNC_CLOSING) || (!tty)) {
spin_unlock_irqrestore(&info->readlock, flags);
return;
}
/* use queue instead of direct, if online and */
/* data is in queue or buffer is full */
- if (info->online && ((tty_buffer_request_room(tty, l) < l) ||
+ if (info->online && ((tty_buffer_request_room(port, l) < l) ||
!skb_queue_empty(&dev->drv[info->isdn_driver]->rpqueue[info->isdn_channel]))) {
skb = alloc_skb(l, GFP_ATOMIC);
if (!skb) {