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Message-ID: <20091118141438.3346.33566.stgit@localhost.localdomain>
Date: Wed, 18 Nov 2009 14:14:45 +0000
From: Alan Cox <alan@...ux.intel.com>
To: greg@...ah.com, linux-kernel@...r.kernel.org
Subject: [PATCH 01/12] isicom: switch to the new tty_port_open helper
Trivial conversion in this case so might as well do it while testing the
port_open design is right
Signed-off-by: Alan Cox <alan@...ux.intel.com>
---
drivers/char/isicom.c | 88 ++++++++++++-------------------------------------
1 files changed, 21 insertions(+), 67 deletions(-)
diff --git a/drivers/char/isicom.c b/drivers/char/isicom.c
index 426bfdd..e7be3ec 100644
--- a/drivers/char/isicom.c
+++ b/drivers/char/isicom.c
@@ -804,24 +804,21 @@ static inline void isicom_setup_board(struct isi_board *bp)
bp->status |= BOARD_ACTIVE;
for (channel = 0; channel < bp->port_count; channel++, port++)
drop_dtr_rts(port);
+ bp->count++;
spin_unlock_irqrestore(&bp->card_lock, flags);
}
-static int isicom_setup_port(struct tty_struct *tty)
+static int isicom_activate(struct tty_port *tport, struct tty_struct *tty)
{
- struct isi_port *port = tty->driver_data;
+ struct isi_port *port = container_of(tport, struct isi_port, port);
struct isi_board *card = port->card;
unsigned long flags;
- if (port->port.flags & ASYNC_INITIALIZED)
- return 0;
- if (tty_port_alloc_xmit_buf(&port->port) < 0)
+ if (tty_port_alloc_xmit_buf(tport) < 0)
return -ENOMEM;
spin_lock_irqsave(&card->card_lock, flags);
- clear_bit(TTY_IO_ERROR, &tty->flags);
- if (port->port.count == 1)
- card->count++;
+ isicom_setup_board(card);
port->xmit_cnt = port->xmit_head = port->xmit_tail = 0;
@@ -832,9 +829,7 @@ static int isicom_setup_port(struct tty_struct *tty)
outw(((ISICOM_KILLTX | ISICOM_KILLRX) << 8) | 0x06, card->base);
InterruptTheCard(card->base);
}
-
isicom_config_port(tty);
- port->port.flags |= ASYNC_INITIALIZED;
spin_unlock_irqrestore(&card->card_lock, flags);
return 0;
@@ -871,31 +866,20 @@ static struct tty_port *isicom_find_port(struct tty_struct *tty)
return &port->port;
}
-
+
static int isicom_open(struct tty_struct *tty, struct file *filp)
{
struct isi_port *port;
struct isi_board *card;
struct tty_port *tport;
- int error = 0;
tport = isicom_find_port(tty);
if (tport == NULL)
return -ENODEV;
port = container_of(tport, struct isi_port, port);
card = &isi_card[BOARD(tty->index)];
- isicom_setup_board(card);
- /* FIXME: locking on port.count etc */
- port->port.count++;
- tty->driver_data = port;
- tty_port_tty_set(&port->port, tty);
- /* FIXME: Locking on Initialized flag */
- if (!test_bit(ASYNCB_INITIALIZED, &tport->flags))
- error = isicom_setup_port(tty);
- if (error == 0)
- error = tty_port_block_til_ready(&port->port, tty, filp);
- return error;
+ return tty_port_open(tport, tty, filp);
}
/* close et all */
@@ -914,40 +898,21 @@ static void isicom_shutdown_port(struct isi_port *port)
tty = tty_port_tty_get(&port->port);
- if (!(port->port.flags & ASYNC_INITIALIZED)) {
- tty_kref_put(tty);
- return;
- }
-
tty_port_free_xmit_buf(&port->port);
- port->port.flags &= ~ASYNC_INITIALIZED;
- /* 3rd October 2000 : Vinayak P Risbud */
- tty_port_tty_set(&port->port, NULL);
-
- /*Fix done by Anil .S on 30-04-2001
- remote login through isi port has dtr toggle problem
- due to which the carrier drops before the password prompt
- appears on the remote end. Now we drop the dtr only if the
- HUPCL(Hangup on close) flag is set for the tty*/
-
- if (C_HUPCL(tty))
- /* drop dtr on this port */
- drop_dtr(port);
-
- /* any other port uninits */
- if (tty)
- set_bit(TTY_IO_ERROR, &tty->flags);
-
if (--card->count < 0) {
pr_dbg("isicom_shutdown_port: bad board(0x%lx) count %d.\n",
card->base, card->count);
card->count = 0;
}
- /* last port was closed, shutdown that boad too */
- if (C_HUPCL(tty)) {
- if (!card->count)
- isicom_shutdown_board(card);
+ /* last port was closed, shutdown that board too */
+ if (tty && C_HUPCL(tty)) {
+ /* FIXME: this logic is bogus - it's the old logic that was
+ bogus before but it still wants fixing */
+ if (!card->count) {
+ if (card->status & BOARD_ACTIVE)
+ card->status &= ~BOARD_ACTIVE;
+ }
}
tty_kref_put(tty);
}
@@ -968,7 +933,7 @@ static void isicom_flush_buffer(struct tty_struct *tty)
tty_wakeup(tty);
}
-static void isicom_close_port(struct tty_port *port)
+static void isicom_shutdown(struct tty_port *port)
{
struct isi_port *ip = container_of(port, struct isi_port, port);
struct isi_board *card = ip->card;
@@ -977,10 +942,8 @@ static void isicom_close_port(struct tty_port *port)
/* indicate to the card that no more data can be received
on this port */
spin_lock_irqsave(&card->card_lock, flags);
- if (port->flags & ASYNC_INITIALIZED) {
- card->port_status &= ~(1 << ip->channel);
- outw(card->port_status, card->base + 0x02);
- }
+ card->port_status &= ~(1 << ip->channel);
+ outw(card->port_status, card->base + 0x02);
isicom_shutdown_port(ip);
spin_unlock_irqrestore(&card->card_lock, flags);
}
@@ -991,12 +954,7 @@ static void isicom_close(struct tty_struct *tty, struct file *filp)
struct tty_port *port = &ip->port;
if (isicom_paranoia_check(ip, tty->name, "isicom_close"))
return;
-
- if (tty_port_close_start(port, tty, filp) == 0)
- return;
- isicom_close_port(port);
- isicom_flush_buffer(tty);
- tty_port_close_end(port, tty);
+ tty_port_close(port, tty, filp);
}
/* write et all */
@@ -1326,15 +1284,9 @@ static void isicom_start(struct tty_struct *tty)
static void isicom_hangup(struct tty_struct *tty)
{
struct isi_port *port = tty->driver_data;
- unsigned long flags;
if (isicom_paranoia_check(port, tty->name, "isicom_hangup"))
return;
-
- spin_lock_irqsave(&port->card->card_lock, flags);
- isicom_shutdown_port(port);
- spin_unlock_irqrestore(&port->card->card_lock, flags);
-
tty_port_hangup(&port->port);
}
@@ -1367,6 +1319,8 @@ static const struct tty_operations isicom_ops = {
static const struct tty_port_operations isicom_port_ops = {
.carrier_raised = isicom_carrier_raised,
.dtr_rts = isicom_dtr_rts,
+ .activate = isicom_activate,
+ .shutdown = isicom_shutdown,
};
static int __devinit reset_card(struct pci_dev *pdev,
--
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