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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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18
arch/ia64/hp/sim/simserial.c
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@@ -53,9 +53,8 @@ struct tty_driver *hp_simserial_driver;
static struct console *console;
static void receive_chars(struct tty_struct *tty)
static void receive_chars(struct tty_port *port)
{
struct tty_port *port = tty->port;
unsigned char ch;
static unsigned char seen_esc = 0;
@@ -85,7 +84,7 @@ static void receive_chars(struct tty_struct *tty)
if (tty_insert_flip_char(port, ch, TTY_NORMAL) == 0)
break;
}
tty_flip_buffer_push(tty);
tty_flip_buffer_push(port);
}
/*
@@ -94,18 +93,9 @@ static void receive_chars(struct tty_struct *tty)
static irqreturn_t rs_interrupt_single(int irq, void *dev_id)
{
struct serial_state *info = dev_id;
struct tty_struct *tty = tty_port_tty_get(&info->port);
if (!tty) {
printk(KERN_INFO "%s: tty=0 problem\n", __func__);
return IRQ_NONE;
}
/*
* pretty simple in our case, because we only get interrupts
* on inbound traffic
*/
receive_chars(tty);
tty_kref_put(tty);
receive_chars(&info->port);
return IRQ_HANDLED;
}