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-rw-r--r--drivers/char/isicom.c112
1 files changed, 59 insertions, 53 deletions
diff --git a/drivers/char/isicom.c b/drivers/char/isicom.c
index 55a47b33ff3..e9ebabaf8cb 100644
--- a/drivers/char/isicom.c
+++ b/drivers/char/isicom.c
@@ -189,7 +189,7 @@ struct isi_board {
unsigned char irq;
unsigned char port_count;
unsigned short status;
- unsigned short port_status; /* each bit represents a single port */
+ unsigned short port_status; /* each bit for each port */
unsigned short shift_count;
struct isi_port * ports;
signed char count;
@@ -242,7 +242,9 @@ static int lock_card(struct isi_board *card)
udelay(1000); /* 1ms */
}
}
- printk(KERN_WARNING "ISICOM: Failed to lock Card (0x%lx)\n", card->base);
+ printk(KERN_WARNING "ISICOM: Failed to lock Card (0x%lx)\n",
+ card->base);
+
return 0; /* Failed to aquire the card! */
}
@@ -466,33 +468,36 @@ static void isicom_tx(unsigned long _data)
residue = NO;
wrd = 0;
while (1) {
- cnt = min_t(int, txcount, (SERIAL_XMIT_SIZE - port->xmit_tail));
+ cnt = min_t(int, txcount, (SERIAL_XMIT_SIZE
+ - port->xmit_tail));
if (residue == YES) {
residue = NO;
if (cnt > 0) {
- wrd |= (port->xmit_buf[port->xmit_tail] << 8);
- port->xmit_tail = (port->xmit_tail + 1) & (SERIAL_XMIT_SIZE - 1);
+ wrd |= (port->xmit_buf[port->xmit_tail]
+ << 8);
+ port->xmit_tail = (port->xmit_tail + 1)
+ & (SERIAL_XMIT_SIZE - 1);
port->xmit_cnt--;
txcount--;
cnt--;
outw(wrd, base);
- }
- else {
+ } else {
outw(wrd, base);
break;
}
}
if (cnt <= 0) break;
word_count = cnt >> 1;
- outsw(base, port->xmit_buf+port->xmit_tail, word_count);
- port->xmit_tail = (port->xmit_tail + (word_count << 1)) &
- (SERIAL_XMIT_SIZE - 1);
+ outsw(base, port->xmit_buf+port->xmit_tail,word_count);
+ port->xmit_tail = (port->xmit_tail
+ + (word_count << 1)) & (SERIAL_XMIT_SIZE - 1);
txcount -= (word_count << 1);
port->xmit_cnt -= (word_count << 1);
if (cnt & 0x0001) {
residue = YES;
wrd = port->xmit_buf[port->xmit_tail];
- port->xmit_tail = (port->xmit_tail + 1) & (SERIAL_XMIT_SIZE - 1);
+ port->xmit_tail = (port->xmit_tail + 1)
+ & (SERIAL_XMIT_SIZE - 1);
port->xmit_cnt--;
txcount--;
}
@@ -572,8 +577,8 @@ static irqreturn_t isicom_interrupt(int irq, void *dev_id, struct pt_regs *regs)
byte_count = header & 0xff;
if (channel + 1 > card->port_count) {
- printk(KERN_WARNING "ISICOM: isicom_interrupt(0x%lx): %d(channel) > port_count.\n",
- base, channel+1);
+ printk(KERN_WARNING "ISICOM: isicom_interrupt(0x%lx): "
+ "%d(channel) > port_count.\n", base, channel+1);
if (card->isa)
ClearInterrupt(base);
else
@@ -611,26 +616,22 @@ static irqreturn_t isicom_interrupt(int irq, void *dev_id, struct pt_regs *regs)
header = inw(base);
switch(header & 0xff) {
case 0: /* Change in EIA signals */
-
if (port->flags & ASYNC_CHECK_CD) {
if (port->status & ISI_DCD) {
if (!(header & ISI_DCD)) {
/* Carrier has been lost */
- pr_dbg("interrupt: DCD->low.\n");
+ pr_dbg("interrupt: DCD->low.\n"
+ );
port->status &= ~ISI_DCD;
schedule_work(&port->hangup_tq);
}
+ } else if (header & ISI_DCD) {
+ /* Carrier has been detected */
+ pr_dbg("interrupt: DCD->high.\n");
+ port->status |= ISI_DCD;
+ wake_up_interruptible(&port->open_wait);
}
- else {
- if (header & ISI_DCD) {
- /* Carrier has been detected */
- pr_dbg("interrupt: DCD->high.\n");
- port->status |= ISI_DCD;
- wake_up_interruptible(&port->open_wait);
- }
- }
- }
- else {
+ } else {
if (header & ISI_DCD)
port->status |= ISI_DCD;
else
@@ -642,19 +643,16 @@ static irqreturn_t isicom_interrupt(int irq, void *dev_id, struct pt_regs *regs)
if (header & ISI_CTS) {
port->tty->hw_stopped = 0;
/* start tx ing */
- port->status |= (ISI_TXOK | ISI_CTS);
+ port->status |= (ISI_TXOK
+ | ISI_CTS);
schedule_work(&port->bh_tqueue);
}
+ } else if (!(header & ISI_CTS)) {
+ port->tty->hw_stopped = 1;
+ /* stop tx ing */
+ port->status &= ~(ISI_TXOK | ISI_CTS);
}
- else {
- if (!(header & ISI_CTS)) {
- port->tty->hw_stopped = 1;
- /* stop tx ing */
- port->status &= ~(ISI_TXOK | ISI_CTS);
- }
- }
- }
- else {
+ } else {
if (header & ISI_CTS)
port->status |= ISI_CTS;
else
@@ -673,7 +671,7 @@ static irqreturn_t isicom_interrupt(int irq, void *dev_id, struct pt_regs *regs)
break;
- case 1: /* Received Break !!! */
+ case 1: /* Received Break !!! */
tty_insert_flip_char(tty, 0, TTY_BREAK);
if (port->flags & ASYNC_SAK)
do_SAK(tty);
@@ -688,8 +686,7 @@ static irqreturn_t isicom_interrupt(int irq, void *dev_id, struct pt_regs *regs)
pr_dbg("Intr: Unknown code in status packet.\n");
break;
}
- }
- else { /* Data Packet */
+ } else { /* Data Packet */
count = tty_prepare_flip_string(tty, &rp, byte_count & ~1);
pr_dbg("Intr: Can rx %d of %d bytes.\n", count, byte_count);
@@ -697,7 +694,8 @@ static irqreturn_t isicom_interrupt(int irq, void *dev_id, struct pt_regs *regs)
insw(base, rp, word_count);
byte_count -= (word_count << 1);
if (count & 0x0001) {
- tty_insert_flip_char(tty, inw(base) & 0xff, TTY_NORMAL);
+ tty_insert_flip_char(tty, inw(base) & 0xff,
+ TTY_NORMAL);
byte_count -= 2;
}
if (byte_count > 0) {
@@ -714,6 +712,7 @@ static irqreturn_t isicom_interrupt(int irq, void *dev_id, struct pt_regs *regs)
ClearInterrupt(base);
else
outw(0x0000, base+0x04); /* enable interrupts */
+
return IRQ_HANDLED;
}
@@ -885,7 +884,8 @@ static int isicom_setup_port(struct isi_port *port)
return 0;
}
-static int block_til_ready(struct tty_struct *tty, struct file *filp, struct isi_port *port)
+static int block_til_ready(struct tty_struct *tty, struct file *filp,
+ struct isi_port *port)
{
struct isi_board *card = port->card;
int do_clocal = 0, retval;
@@ -905,7 +905,8 @@ static int block_til_ready(struct tty_struct *tty, struct file *filp, struct isi
/* if non-blocking mode is set ... */
- if ((filp->f_flags & O_NONBLOCK) || (tty->flags & (1 << TTY_IO_ERROR))) {
+ if ((filp->f_flags & O_NONBLOCK) ||
+ (tty->flags & (1 << TTY_IO_ERROR))) {
pr_dbg("block_til_ready: non-block mode.\n");
port->flags |= ASYNC_NORMAL_ACTIVE;
return 0;
@@ -1051,7 +1052,7 @@ static void isicom_shutdown_port(struct isi_port *port)
card->count = 0;
}
- /* last port was closed , shutdown that boad too */
+ /* last port was closed, shutdown that boad too */
if (C_HUPCL(tty)) {
if (!card->count)
isicom_shutdown_board(card);
@@ -1078,14 +1079,14 @@ static void isicom_close(struct tty_struct *tty, struct file *filp)
}
if (tty->count == 1 && port->count != 1) {
- printk(KERN_WARNING "ISICOM:(0x%lx) isicom_close: bad port count"
- "tty->count = 1 port count = %d.\n",
+ printk(KERN_WARNING "ISICOM:(0x%lx) isicom_close: bad port "
+ "count tty->count = 1 port count = %d.\n",
card->base, port->count);
port->count = 1;
}
if (--port->count < 0) {
- printk(KERN_WARNING "ISICOM:(0x%lx) isicom_close: bad port count for"
- "channel%d = %d", card->base, port->channel,
+ printk(KERN_WARNING "ISICOM:(0x%lx) isicom_close: bad port "
+ "count for channel%d = %d", card->base, port->channel,
port->count);
port->count = 0;
}
@@ -1121,7 +1122,8 @@ static void isicom_close(struct tty_struct *tty, struct file *filp)
spin_unlock_irqrestore(&card->card_lock, flags);
if (port->close_delay) {
pr_dbg("scheduling until time out.\n");
- msleep_interruptible(jiffies_to_msecs(port->close_delay));
+ msleep_interruptible(
+ jiffies_to_msecs(port->close_delay));
}
spin_lock_irqsave(&card->card_lock, flags);
wake_up_interruptible(&port->open_wait);
@@ -1149,13 +1151,14 @@ static int isicom_write(struct tty_struct *tty, const unsigned char *buf,
spin_lock_irqsave(&card->card_lock, flags);
while(1) {
- cnt = min_t(int, count, min(SERIAL_XMIT_SIZE - port->xmit_cnt - 1,
- SERIAL_XMIT_SIZE - port->xmit_head));
+ cnt = min_t(int, count, min(SERIAL_XMIT_SIZE - port->xmit_cnt
+ - 1, SERIAL_XMIT_SIZE - port->xmit_head));
if (cnt <= 0)
break;
memcpy(port->xmit_buf + port->xmit_head, buf, cnt);
- port->xmit_head = (port->xmit_head + cnt) & (SERIAL_XMIT_SIZE - 1);
+ port->xmit_head = (port->xmit_head + cnt) & (SERIAL_XMIT_SIZE
+ - 1);
port->xmit_cnt += cnt;
buf += cnt;
count -= cnt;
@@ -1200,7 +1203,8 @@ static void isicom_flush_chars(struct tty_struct *tty)
if (isicom_paranoia_check(port, tty->name, "isicom_flush_chars"))
return;
- if (port->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped || !port->xmit_buf)
+ if (port->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped ||
+ !port->xmit_buf)
return;
/* this tells the transmitter to consider this port for
@@ -1233,7 +1237,8 @@ static int isicom_chars_in_buffer(struct tty_struct *tty)
}
/* ioctl et all */
-static inline void isicom_send_break(struct isi_port *port, unsigned long length)
+static inline void isicom_send_break(struct isi_port *port,
+ unsigned long length)
{
struct isi_board *card = port->card;
unsigned long base = card->base;
@@ -1368,7 +1373,8 @@ static int isicom_ioctl(struct tty_struct *tty, struct file *filp,
return 0;
case TIOCGSOFTCAR:
- return put_user(C_CLOCAL(tty) ? 1 : 0, (unsigned long __user *)argp);
+ return put_user(C_CLOCAL(tty) ? 1 : 0,
+ (unsigned long __user *)argp);
case TIOCSSOFTCAR:
if (get_user(arg, (unsigned long __user *) argp))
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-09 15:41:33 +0000