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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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16
drivers/tty/serial/sunhv.c
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@@ -181,17 +181,17 @@ static struct sunhv_ops bywrite_ops = {
static struct sunhv_ops *sunhv_ops = &bychar_ops;
static struct tty_struct *receive_chars(struct uart_port *port)
static struct tty_port *receive_chars(struct uart_port *port)
{
struct tty_struct *tty = NULL;
struct tty_port *tport = NULL;
if (port->state != NULL) /* Unopened serial console */
tty = port->state->port.tty;
tport = &port->state->port;
if (sunhv_ops->receive_chars(port))
sun_do_break();
return tty;
return tport;
}
static void transmit_chars(struct uart_port *port)
@@ -214,16 +214,16 @@ static void transmit_chars(struct uart_port *port)
static irqreturn_t sunhv_interrupt(int irq, void *dev_id)
{
struct uart_port *port = dev_id;
struct tty_struct *tty;
struct tty_port *tport;
unsigned long flags;
spin_lock_irqsave(&port->lock, flags);
tty = receive_chars(port);
tport = receive_chars(port);
transmit_chars(port);
spin_unlock_irqrestore(&port->lock, flags);
if (tty)
tty_flip_buffer_push(tty);
if (tport)
tty_flip_buffer_push(tport);
return IRQ_HANDLED;
}