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>
这个提交包含在:
Jiri Slaby
2013-01-03 15:53:01 +01:00
提交者 Greg Kroah-Hartman
父节点 ea28fd56fc
当前提交 227434f898
修改 21 个文件,包含 60 行新增43 行删除

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@@ -629,7 +629,7 @@ int hvc_poll(struct hvc_struct *hp)
/* Read data if any */
for (;;) {
int count = tty_buffer_request_room(tty, N_INBUF);
int count = tty_buffer_request_room(&hp->port, N_INBUF);
/* If flip is full, just reschedule a later read */
if (count == 0) {

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@@ -609,7 +609,7 @@ static int hvcs_io(struct hvcs_struct *hvcsd)
/* remove the read masks */
hvcsd->todo_mask &= ~(HVCS_READ_MASK);
if (tty_buffer_request_room(tty, HVCS_BUFF_LEN) >= HVCS_BUFF_LEN) {
if (tty_buffer_request_room(&hvcsd->port, HVCS_BUFF_LEN) >= HVCS_BUFF_LEN) {
got = hvc_get_chars(unit_address,
&buf[0],
HVCS_BUFF_LEN);