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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/efm32-uart.c
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@@ -249,12 +249,9 @@ static irqreturn_t efm32_uart_rxirq(int irq, void *data)
int handled = IRQ_NONE;
struct uart_port *port = &efm_port->port;
struct tty_port *tport = &port->state->port;
struct tty_struct *tty;
spin_lock(&port->lock);
tty = tty_kref_get(tport->tty);
if (irqflag & UARTn_IF_RXDATAV) {
efm32_uart_write32(efm_port, UARTn_IF_RXDATAV, UARTn_IFC);
efm32_uart_rx_chars(efm_port);
@@ -270,10 +267,7 @@ static irqreturn_t efm32_uart_rxirq(int irq, void *data)
handled = IRQ_HANDLED;
}
if (tty) {
tty_flip_buffer_push(tty);
tty_kref_put(tty);
}
tty_flip_buffer_push(tport);
spin_unlock(&port->lock);