X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fchar%2Fisicom.c;h=7d30ee1d3fca9de33cb5e23790fd6df96c791e05;hb=bb979d7fc360bc37cbaff43a6fafceb897cb5e47;hp=8f7cc190b62d420116b5c0d30e70899c3332c94d;hpb=9389523a77be0a7e01d957c836733b5c9d5530a1;p=linux-2.6-omap-h63xx.git diff --git a/drivers/char/isicom.c b/drivers/char/isicom.c index 8f7cc190b62..7d30ee1d3fc 100644 --- a/drivers/char/isicom.c +++ b/drivers/char/isicom.c @@ -421,17 +421,16 @@ static void isicom_tx(unsigned long _data) if (retries >= 100) goto unlock; + tty = tty_port_tty_get(&port->port); + if (tty == NULL) + goto put_unlock; + for (; count > 0; count--, port++) { /* port not active or tx disabled to force flow control */ if (!(port->port.flags & ASYNC_INITIALIZED) || !(port->status & ISI_TXOK)) continue; - tty = port->port.tty; - - if (tty == NULL) - continue; - txcount = min_t(short, TX_SIZE, port->xmit_cnt); if (txcount <= 0 || tty->stopped || tty->hw_stopped) continue; @@ -489,6 +488,8 @@ static void isicom_tx(unsigned long _data) tty_wakeup(tty); } +put_unlock: + tty_kref_put(tty); unlock: spin_unlock_irqrestore(&isi_card[card].card_lock, flags); /* schedule another tx for hopefully in about 10ms */ @@ -547,7 +548,7 @@ static irqreturn_t isicom_interrupt(int irq, void *dev_id) return IRQ_HANDLED; } - tty = port->port.tty; + tty = tty_port_tty_get(&port->port); if (tty == NULL) { word_count = byte_count >> 1; while (byte_count > 1) { @@ -588,7 +589,7 @@ static irqreturn_t isicom_interrupt(int irq, void *dev_id) } if (port->port.flags & ASYNC_CTS_FLOW) { - if (port->port.tty->hw_stopped) { + if (tty->hw_stopped) { if (header & ISI_CTS) { port->port.tty->hw_stopped = 0; /* start tx ing */ @@ -597,7 +598,7 @@ static irqreturn_t isicom_interrupt(int irq, void *dev_id) tty_wakeup(tty); } } else if (!(header & ISI_CTS)) { - port->port.tty->hw_stopped = 1; + tty->hw_stopped = 1; /* stop tx ing */ port->status &= ~(ISI_TXOK | ISI_CTS); } @@ -660,24 +661,21 @@ static irqreturn_t isicom_interrupt(int irq, void *dev_id) } outw(0x0000, base+0x04); /* enable interrupts */ spin_unlock(&card->card_lock); + tty_kref_put(tty); return IRQ_HANDLED; } -static void isicom_config_port(struct isi_port *port) +static void isicom_config_port(struct tty_struct *tty) { + struct isi_port *port = tty->driver_data; struct isi_board *card = port->card; - struct tty_struct *tty; unsigned long baud; unsigned long base = card->base; u16 channel_setup, channel = port->channel, shift_count = card->shift_count; unsigned char flow_ctrl; - tty = port->port.tty; - - if (tty == NULL) - return; /* FIXME: Switch to new tty baud API */ baud = C_BAUD(tty); if (baud & CBAUDEX) { @@ -690,7 +688,7 @@ static void isicom_config_port(struct isi_port *port) /* 1,2,3,4 => 57.6, 115.2, 230, 460 kbps resp. */ if (baud < 1 || baud > 4) - port->port.tty->termios->c_cflag &= ~CBAUDEX; + tty->termios->c_cflag &= ~CBAUDEX; else baud += 15; } @@ -797,8 +795,9 @@ static inline void isicom_setup_board(struct isi_board *bp) spin_unlock_irqrestore(&bp->card_lock, flags); } -static int isicom_setup_port(struct isi_port *port) +static int isicom_setup_port(struct tty_struct *tty) { + struct isi_port *port = tty->driver_data; struct isi_board *card = port->card; unsigned long flags; @@ -808,8 +807,7 @@ static int isicom_setup_port(struct isi_port *port) return -ENOMEM; spin_lock_irqsave(&card->card_lock, flags); - if (port->port.tty) - clear_bit(TTY_IO_ERROR, &port->port.tty->flags); + clear_bit(TTY_IO_ERROR, &tty->flags); if (port->port.count == 1) card->count++; @@ -823,7 +821,7 @@ static int isicom_setup_port(struct isi_port *port) InterruptTheCard(card->base); } - isicom_config_port(port); + isicom_config_port(tty); port->port.flags |= ASYNC_INITIALIZED; spin_unlock_irqrestore(&card->card_lock, flags); @@ -934,8 +932,8 @@ static int isicom_open(struct tty_struct *tty, struct file *filp) port->port.count++; tty->driver_data = port; - port->port.tty = tty; - error = isicom_setup_port(port); + tty_port_tty_set(&port->port, tty); + error = isicom_setup_port(tty); if (error == 0) error = block_til_ready(tty, filp, port); return error; @@ -955,15 +953,17 @@ static void isicom_shutdown_port(struct isi_port *port) struct isi_board *card = port->card; struct tty_struct *tty; - tty = port->port.tty; + tty = tty_port_tty_get(&port->port); - if (!(port->port.flags & ASYNC_INITIALIZED)) + 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 */ - port->port.tty = NULL; + 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 @@ -1243,9 +1243,10 @@ static int isicom_tiocmset(struct tty_struct *tty, struct file *file, return 0; } -static int isicom_set_serial_info(struct isi_port *port, - struct serial_struct __user *info) +static int isicom_set_serial_info(struct tty_struct *tty, + struct serial_struct __user *info) { + struct isi_port *port = tty->driver_data; struct serial_struct newinfo; int reconfig_port; @@ -1276,7 +1277,7 @@ static int isicom_set_serial_info(struct isi_port *port, if (reconfig_port) { unsigned long flags; spin_lock_irqsave(&port->card->card_lock, flags); - isicom_config_port(port); + isicom_config_port(tty); spin_unlock_irqrestore(&port->card->card_lock, flags); } unlock_kernel(); @@ -1318,7 +1319,7 @@ static int isicom_ioctl(struct tty_struct *tty, struct file *filp, return isicom_get_serial_info(port, argp); case TIOCSSERIAL: - return isicom_set_serial_info(port, argp); + return isicom_set_serial_info(tty, argp); default: return -ENOIOCTLCMD; @@ -1341,7 +1342,7 @@ static void isicom_set_termios(struct tty_struct *tty, return; spin_lock_irqsave(&port->card->card_lock, flags); - isicom_config_port(port); + isicom_config_port(tty); spin_unlock_irqrestore(&port->card->card_lock, flags); if ((old_termios->c_cflag & CRTSCTS) && @@ -1419,7 +1420,7 @@ static void isicom_hangup(struct tty_struct *tty) port->port.count = 0; port->port.flags &= ~ASYNC_NORMAL_ACTIVE; - port->port.tty = NULL; + tty_port_tty_set(&port->port, NULL); wake_up_interruptible(&port->port.open_wait); }