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TTY: switch tty_flip_buffer_push

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

Now, the one where most of tty_port_tty_get gets removed:
tty_flip_buffer_push.

IOW we also closed all the races in drivers not using tty_port_tty_get
at all yet.

Also we move tty_flip_buffer_push declaration from include/linux/tty.h
to include/linux/tty_flip.h to all others while we are changing it
anyway.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jiri Slaby
2013-01-03 15:53:06 +01:00
committed by Greg Kroah-Hartman
parent d6c53c0e9b
commit 2e124b4a39
146 changed files with 446 additions and 988 deletions
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drivers/net/usb/hso.c
+15 -16
View File
@@ -2035,24 +2035,23 @@ static int put_rxbuf_data(struct urb *urb, struct hso_serial *serial)
tty = tty_port_tty_get(&serial->port);
/* Push data to tty */
if (tty) {
write_length_remaining = urb->actual_length -
serial->curr_rx_urb_offset;
D1("data to push to tty");
while (write_length_remaining) {
if (test_bit(TTY_THROTTLED, &tty->flags)) {
tty_kref_put(tty);
return -1;
}
curr_write_len = tty_insert_flip_string(&serial->port,
urb->transfer_buffer + serial->curr_rx_urb_offset,
write_length_remaining);
serial->curr_rx_urb_offset += curr_write_len;
write_length_remaining -= curr_write_len;
tty_flip_buffer_push(tty);
write_length_remaining = urb->actual_length -
serial->curr_rx_urb_offset;
D1("data to push to tty");
while (write_length_remaining) {
if (tty && test_bit(TTY_THROTTLED, &tty->flags)) {
tty_kref_put(tty);
return -1;
}
tty_kref_put(tty);
curr_write_len = tty_insert_flip_string(&serial->port,
urb->transfer_buffer + serial->curr_rx_urb_offset,
write_length_remaining);
serial->curr_rx_urb_offset += curr_write_len;
write_length_remaining -= curr_write_len;
tty_flip_buffer_push(&serial->port);
}
tty_kref_put(tty);
if (write_length_remaining == 0) {
serial->curr_rx_urb_offset = 0;
serial->rx_urb_filled[hso_urb_to_index(serial, urb)] = 0;