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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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8
drivers/tty/serial/sccnxp.c
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@@ -285,10 +285,6 @@ static void sccnxp_handle_rx(struct uart_port *port)
{
u8 sr;
unsigned int ch, flag;
struct tty_struct *tty = tty_port_tty_get(&port->state->port);
if (!tty)
return;
for (;;) {
sr = sccnxp_port_read(port, SCCNXP_SR_REG);
@@ -333,9 +329,7 @@ static void sccnxp_handle_rx(struct uart_port *port)
uart_insert_char(port, sr, SR_OVR, ch, flag);
}
tty_flip_buffer_push(tty);
tty_kref_put(tty);
tty_flip_buffer_push(&port->state->port);
}
static void sccnxp_handle_tx(struct uart_port *port)