moxa: use tty_port

Switch MOXA to use the new tty_port structure

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 42 insertions, 45 deletions

diff --git a/drivers/char/moxa.c b/drivers/char/moxa.c
index e21346da3101..dd10f143d96f 100644
--- a/drivers/char/moxa.c
+++ b/drivers/char/moxa.c
@@ -130,17 +130,14 @@ struct moxaq_str {
 };
 
 struct moxa_port {
+        struct tty_port port;
         struct moxa_board_conf *board;
-        struct tty_struct *tty;
         void __iomem *tableAddr;
 
         int type;
         int close_delay;
-        unsigned int count;
-        int asyncflags;
         int cflag;
         unsigned long statusflags;
-        wait_queue_head_t open_wait;
 
         u8 DCDState;
         u8 lineCtrl;
@@ -348,10 +345,10 @@ static int moxa_ioctl(struct tty_struct *tty, struct file *file,
                                 if (status & 4)
                                         tmp.dcd = 1;
 
-                                if (!p->tty || !p->tty->termios)
+                                if (!p->port.tty || !p->port.tty->termios)
                                         tmp.cflag = p->cflag;
                                 else
-                                        tmp.cflag = p->tty->termios->c_cflag;
+                                        tmp.cflag = p->port.tty->termios->c_cflag;
 copy:
                                 if (copy_to_user(argm, &tmp, sizeof(tmp))) {
                                         mutex_unlock(&moxa_openlock);
@@ -828,7 +825,7 @@ static int moxa_init_board(struct moxa_board_conf *brd, struct device *dev)
                 p->type = PORT_16550A;
                 p->close_delay = 5 * HZ / 10;
                 p->cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL;
-                init_waitqueue_head(&p->open_wait);
+                tty_port_init(&p->port);
         }
 
         switch (brd->boardType) {
@@ -884,12 +881,12 @@ static void moxa_board_deinit(struct moxa_board_conf *brd)
 
         /* pci hot-un-plug support */
         for (a = 0; a < brd->numPorts; a++)
-                if (brd->ports[a].asyncflags & ASYNC_INITIALIZED)
-                        tty_hangup(brd->ports[a].tty);
+                if (brd->ports[a].port.flags & ASYNC_INITIALIZED)
+                        tty_hangup(brd->ports[a].port.tty);
         while (1) {
                 opened = 0;
                 for (a = 0; a < brd->numPorts; a++)
-                        if (brd->ports[a].asyncflags & ASYNC_INITIALIZED)
+                        if (brd->ports[a].port.flags & ASYNC_INITIALIZED)
                                 opened++;
                 mutex_unlock(&moxa_openlock);
                 if (!opened)
@@ -1104,9 +1101,9 @@ static void moxa_close_port(struct moxa_port *ch)
 {
         moxa_shut_down(ch);
         MoxaPortFlushData(ch, 2);
-        ch->asyncflags &= ~ASYNC_NORMAL_ACTIVE;
-        ch->tty->driver_data = NULL;
-        ch->tty = NULL;
+        ch->port.flags &= ~ASYNC_NORMAL_ACTIVE;
+        ch->port.tty->driver_data = NULL;
+        ch->port.tty = NULL;
 }
 
 static int moxa_block_till_ready(struct tty_struct *tty, struct file *filp,
@@ -1117,7 +1114,7 @@ static int moxa_block_till_ready(struct tty_struct *tty, struct file *filp,
         u8 dcd;
 
         while (1) {
-                prepare_to_wait(&ch->open_wait, &wait, TASK_INTERRUPTIBLE);
+                prepare_to_wait(&ch->port.open_wait, &wait, TASK_INTERRUPTIBLE);
                 if (tty_hung_up_p(filp)) {
 #ifdef SERIAL_DO_RESTART
                         retval = -ERESTARTSYS;
@@ -1138,7 +1135,7 @@ static int moxa_block_till_ready(struct tty_struct *tty, struct file *filp,
                 }
                 schedule();
         }
-        finish_wait(&ch->open_wait, &wait);
+        finish_wait(&ch->port.open_wait, &wait);
 
         return retval;
 }
@@ -1163,16 +1160,16 @@ static int moxa_open(struct tty_struct *tty, struct file *filp)
         }
 
         ch = &brd->ports[port % MAX_PORTS_PER_BOARD];
-        ch->count++;
+        ch->port.count++;
         tty->driver_data = ch;
-        ch->tty = tty;
-        if (!(ch->asyncflags & ASYNC_INITIALIZED)) {
+        ch->port.tty = tty;
+        if (!(ch->port.flags & ASYNC_INITIALIZED)) {
                 ch->statusflags = 0;
                 moxa_set_tty_param(tty, tty->termios);
                 MoxaPortLineCtrl(ch, 1, 1);
                 MoxaPortEnable(ch);
                 MoxaSetFifo(ch, ch->type == PORT_16550A);
-                ch->asyncflags |= ASYNC_INITIALIZED;
+                ch->port.flags |= ASYNC_INITIALIZED;
         }
         mutex_unlock(&moxa_openlock);
 
@@ -1181,11 +1178,11 @@ static int moxa_open(struct tty_struct *tty, struct file *filp)
                 retval = moxa_block_till_ready(tty, filp, ch);
         mutex_lock(&moxa_openlock);
         if (retval) {
-                if (ch->count) /* 0 means already hung up... */
-                        if (--ch->count == 0)
+                if (ch->port.count) /* 0 means already hung up... */
+                        if (--ch->port.count == 0)
                                 moxa_close_port(ch);
         } else
-                ch->asyncflags |= ASYNC_NORMAL_ACTIVE;
+                ch->port.flags |= ASYNC_NORMAL_ACTIVE;
         mutex_unlock(&moxa_openlock);
 
         return retval;
@@ -1204,21 +1201,21 @@ static void moxa_close(struct tty_struct *tty, struct file *filp)
         ch = tty->driver_data;
         if (ch == NULL)
                 goto unlock;
-        if (tty->count == 1 && ch->count != 1) {
+        if (tty->count == 1 && ch->port.count != 1) {
                 printk(KERN_WARNING "moxa_close: bad serial port count; "
-                        "tty->count is 1, ch->count is %d\n", ch->count);
-                ch->count = 1;
+                        "tty->count is 1, ch->port.count is %d\n", ch->port.count);
+                ch->port.count = 1;
         }
-        if (--ch->count < 0) {
+        if (--ch->port.count < 0) {
                 printk(KERN_WARNING "moxa_close: bad serial port count, "
                         "device=%s\n", tty->name);
-                ch->count = 0;
+                ch->port.count = 0;
         }
-        if (ch->count)
+        if (ch->port.count)
                 goto unlock;
 
         ch->cflag = tty->termios->c_cflag;
-        if (ch->asyncflags & ASYNC_INITIALIZED) {
+        if (ch->port.flags & ASYNC_INITIALIZED) {
                 moxa_setup_empty_event(tty);
                 tty_wait_until_sent(tty, 30 * HZ);      /* 30 seconds timeout */
         }
@@ -1374,7 +1371,7 @@ static void moxa_set_termios(struct tty_struct *tty,
                 return;
         moxa_set_tty_param(tty, old_termios);
         if (!(old_termios->c_cflag & CLOCAL) && C_CLOCAL(tty))
-                wake_up_interruptible(&ch->open_wait);
+                wake_up_interruptible(&ch->port.open_wait);
 }
 
 static void moxa_stop(struct tty_struct *tty)
@@ -1412,20 +1409,20 @@ static void moxa_hangup(struct tty_struct *tty)
                 mutex_unlock(&moxa_openlock);
                 return;
         }
-        ch->count = 0;
+        ch->port.count = 0;
         moxa_close_port(ch);
         mutex_unlock(&moxa_openlock);
 
-        wake_up_interruptible(&ch->open_wait);
+        wake_up_interruptible(&ch->port.open_wait);
 }
 
 static void moxa_new_dcdstate(struct moxa_port *p, u8 dcd)
 {
         dcd = !!dcd;
 
-        if (dcd != p->DCDState && p->tty && C_CLOCAL(p->tty)) {
+        if (dcd != p->DCDState && p->port.tty && C_CLOCAL(p->port.tty)) {
                 if (!dcd)
-                        tty_hangup(p->tty);
+                        tty_hangup(p->port.tty);
         }
         p->DCDState = dcd;
 }
@@ -1433,9 +1430,9 @@ static void moxa_new_dcdstate(struct moxa_port *p, u8 dcd)
 static int moxa_poll_port(struct moxa_port *p, unsigned int handle,
                 u16 __iomem *ip)
 {
-        struct tty_struct *tty = p->tty;
+        struct tty_struct *tty = p->port.tty;
         void __iomem *ofsAddr;
-        unsigned int inited = p->asyncflags & ASYNC_INITIALIZED;
+        unsigned int inited = p->port.flags & ASYNC_INITIALIZED;
         u16 intr;
 
         if (tty) {
@@ -1566,9 +1563,9 @@ static void moxa_setup_empty_event(struct tty_struct *tty)
 
 static void moxa_shut_down(struct moxa_port *ch)
 {
-        struct tty_struct *tp = ch->tty;
+        struct tty_struct *tp = ch->port.tty;
 
-        if (!(ch->asyncflags & ASYNC_INITIALIZED))
+        if (!(ch->port.flags & ASYNC_INITIALIZED))
                 return;
 
         MoxaPortDisable(ch);
@@ -1580,7 +1577,7 @@ static void moxa_shut_down(struct moxa_port *ch)
                 MoxaPortLineCtrl(ch, 0, 0);
 
         spin_lock_bh(&moxa_lock);
-        ch->asyncflags &= ~ASYNC_INITIALIZED;
+        ch->port.flags &= ~ASYNC_INITIALIZED;
         spin_unlock_bh(&moxa_lock);
 }
 
@@ -1975,7 +1972,7 @@ static int MoxaPortWriteData(struct moxa_port *port,
         c = (head > tail) ? (head - tail - 1) : (head - tail + tx_mask);
         if (c > len)
                 c = len;
-        moxaLog.txcnt[port->tty->index] += c;
+        moxaLog.txcnt[port->port.tty->index] += c;
         total = c;
         if (spage == epage) {
                 bufhead = readw(ofsAddr + Ofs_txb);
@@ -2017,7 +2014,7 @@ static int MoxaPortWriteData(struct moxa_port *port,
 
 static int MoxaPortReadData(struct moxa_port *port)
 {
-        struct tty_struct *tty = port->tty;
+        struct tty_struct *tty = port->port.tty;
         unsigned char *dst;
         void __iomem *baseAddr, *ofsAddr, *ofs;
         unsigned int count, len, total;
@@ -2124,8 +2121,8 @@ static int moxa_get_serial_info(struct moxa_port *info,
 {
         struct serial_struct tmp = {
                 .type = info->type,
-                .line = info->tty->index,
-                .flags = info->asyncflags,
+                .line = info->port.tty->index,
+                .flags = info->port.flags,
                 .baud_base = 921600,
                 .close_delay = info->close_delay
         };
@@ -2148,13 +2145,13 @@ static int moxa_set_serial_info(struct moxa_port *info,
 
         if (!capable(CAP_SYS_ADMIN)) {
                 if (((new_serial.flags & ~ASYNC_USR_MASK) !=
-                     (info->asyncflags & ~ASYNC_USR_MASK)))
+                     (info->port.flags & ~ASYNC_USR_MASK)))
                         return -EPERM;
         } else
                 info->close_delay = new_serial.close_delay * HZ / 100;
 
         new_serial.flags = (new_serial.flags & ~ASYNC_FLAGS);
-        new_serial.flags |= (info->asyncflags & ASYNC_FLAGS);
+        new_serial.flags |= (info->port.flags & ASYNC_FLAGS);
 
         MoxaSetFifo(info, new_serial.type == PORT_16550A);