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Commit 6be5e2cb authored by Alexander Viro's avatar Alexander Viro Committed by Linus Torvalds
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[PATCH] callout removal: cyclades 

callout removal: cyclades
parent 598fdf6c
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Showing with 11 additions and 78 deletions
drivers/char/cyclades.c
View file @ 6be5e2cb
......@@ -712,7 +712,7 @@ cy_get_user(unsigned long *addr)
#define JIFFIES_DIFF(n, j) ((j) - (n))
static struct tty_driver cy_serial_driver, cy_callout_driver;
static struct tty_driver cy_serial_driver;
static int serial_refcount;
#ifdef CONFIG_ISA
......@@ -968,8 +968,7 @@ do_softint(void *private_)
if (test_and_clear_bit(Cy_EVENT_HANGUP, &info->event)) {
tty_hangup(info->tty);
wake_up_interruptible(&info->open_wait);
info->flags &= ~(ASYNC_NORMAL_ACTIVE|
ASYNC_CALLOUT_ACTIVE);
info->flags &= ~ASYNC_NORMAL_ACTIVE;
}
if (test_and_clear_bit(Cy_EVENT_OPEN_WAKEUP, &info->event)) {
wake_up_interruptible(&info->open_wait);
......@@ -1448,10 +1447,7 @@ cyy_interrupt(int irq, void *dev_id, struct pt_regs *regs)
if(mdm_status & CyDCD){
cy_sched_event(info,
Cy_EVENT_OPEN_WAKEUP);
}else if(!((info->flags
& ASYNC_CALLOUT_ACTIVE)
&&(info->flags
& ASYNC_CALLOUT_NOHUP))){
}else{
cy_sched_event(info,
Cy_EVENT_HANGUP);
}
......@@ -1823,8 +1819,7 @@ cyz_handle_cmd(struct cyclades_card *cinfo)
((u_long)param) :
cy_readl(&ch_ctrl->rs_status)) & C_RS_DCD) {
cy_sched_event(info, Cy_EVENT_OPEN_WAKEUP);
}else if(!((info->flags & ASYNC_CALLOUT_ACTIVE)
&&(info->flags & ASYNC_CALLOUT_NOHUP))){
}else{
cy_sched_event(info, Cy_EVENT_HANGUP);
}
}
......@@ -2375,37 +2370,12 @@ block_til_ready(struct tty_struct *tty, struct file * filp,
return ((info->flags & ASYNC_HUP_NOTIFY) ? -EAGAIN : -ERESTARTSYS);
}
/*
* If this is a callout device, then just make sure the normal
* device isn't being used.
*/
if (tty->driver->subtype == SERIAL_TYPE_CALLOUT) {
if (info->flags & ASYNC_NORMAL_ACTIVE){
return -EBUSY;
}
if ((info->flags & ASYNC_CALLOUT_ACTIVE) &&
(info->flags & ASYNC_SESSION_LOCKOUT) &&
(info->session != current->session)){
return -EBUSY;
}
if ((info->flags & ASYNC_CALLOUT_ACTIVE) &&
(info->flags & ASYNC_PGRP_LOCKOUT) &&
(info->pgrp != current->pgrp)){
return -EBUSY;
}
info->flags |= ASYNC_CALLOUT_ACTIVE;
return 0;
}
/*
* If non-blocking mode is set, then make the check up front
* and then exit.
*/
if ((filp->f_flags & O_NONBLOCK) ||
(tty->flags & (1 << TTY_IO_ERROR))) {
if (info->flags & ASYNC_CALLOUT_ACTIVE){
return -EBUSY;
}
info->flags |= ASYNC_NORMAL_ACTIVE;
return 0;
}
......@@ -2442,8 +2412,7 @@ block_til_ready(struct tty_struct *tty, struct file * filp,
while (1) {
CY_LOCK(info, flags);
if (!(info->flags & ASYNC_CALLOUT_ACTIVE) &&
(tty->termios->c_cflag & CBAUD)){
if ((tty->termios->c_cflag & CBAUD)){
cy_writeb((u_long)base_addr+(CyCAR<<index), (u_char)channel);
cy_writeb((u_long)base_addr+(CyMSVR1<<index), CyRTS);
cy_writeb((u_long)base_addr+(CyMSVR2<<index), CyDTR);
......@@ -2466,8 +2435,7 @@ block_til_ready(struct tty_struct *tty, struct file * filp,
CY_LOCK(info, flags);
cy_writeb((u_long)base_addr+(CyCAR<<index), (u_char)channel);
if (!(info->flags & ASYNC_CALLOUT_ACTIVE)
&& !(info->flags & ASYNC_CLOSING)
if (!(info->flags & ASYNC_CLOSING)
&& (C_CLOCAL(tty)
|| (cy_readb(base_addr+(CyMSVR1<<index)) & CyDCD))) {
CY_UNLOCK(info, flags);
......@@ -2507,8 +2475,7 @@ block_til_ready(struct tty_struct *tty, struct file * filp,
ch_ctrl = zfw_ctrl->ch_ctrl;
while (1) {
if (!(info->flags & ASYNC_CALLOUT_ACTIVE) &&
(tty->termios->c_cflag & CBAUD)){
if ((tty->termios->c_cflag & CBAUD)){
cy_writel(&ch_ctrl[channel].rs_control,
cy_readl(&ch_ctrl[channel].rs_control) |
(C_RS_RTS | C_RS_DTR));
......@@ -2530,8 +2497,7 @@ block_til_ready(struct tty_struct *tty, struct file * filp,
-EAGAIN : -ERESTARTSYS);
break;
}
if (!(info->flags & ASYNC_CALLOUT_ACTIVE)
&& !(info->flags & ASYNC_CLOSING)
if (!(info->flags & ASYNC_CLOSING)
&& (C_CLOCAL(tty)
|| (cy_readl(&ch_ctrl[channel].rs_status) & C_RS_DCD))) {
break;
......@@ -2680,15 +2646,9 @@ cy_open(struct tty_struct *tty, struct file * filp)
}
if ((info->count == 1) && (info->flags & ASYNC_SPLIT_TERMIOS)) {
if (tty->driver->subtype == SERIAL_TYPE_NORMAL)
*tty->termios = info->normal_termios;
else
*tty->termios = info->callout_termios;
*tty->termios = info->normal_termios;
}
info->session = current->session;
info->pgrp = current->pgrp;
#ifdef CY_DEBUG_OPEN
printk(" cyc:cy_open done\n");/**/
#endif
......@@ -2839,8 +2799,6 @@ cy_close(struct tty_struct *tty, struct file *filp)
*/
if (info->flags & ASYNC_NORMAL_ACTIVE)
info->normal_termios = *tty->termios;
if (info->flags & ASYNC_CALLOUT_ACTIVE)
info->callout_termios = *tty->termios;
/*
* Now we wait for the transmit buffer to clear; and we notify
......@@ -2917,8 +2875,7 @@ cy_close(struct tty_struct *tty, struct file *filp)
wake_up_interruptible(&info->open_wait);
CY_LOCK(info, flags);
}
info->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CALLOUT_ACTIVE|
ASYNC_CLOSING);
info->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING);
wake_up_interruptible(&info->close_wait);
#ifdef CY_DEBUG_OTHER
......@@ -4701,7 +4658,7 @@ cy_hangup(struct tty_struct *tty)
printk("cyc:cy_hangup (%d): setting count to 0\n", current->pid);
#endif
info->tty = 0;
info->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CALLOUT_ACTIVE);
info->flags &= ~ASYNC_NORMAL_ACTIVE;
wake_up_interruptible(&info->open_wait);
} /* cy_hangup */
......@@ -5523,22 +5480,8 @@ cy_init(void)
cy_serial_driver.wait_until_sent = cy_wait_until_sent;
cy_serial_driver.read_proc = cyclades_get_proc_info;
/*
* The callout device is just like normal device except for
* major number and the subtype code.
*/
cy_callout_driver = cy_serial_driver;
cy_callout_driver.name = "cub";
cy_callout_driver.major = CYCLADESAUX_MAJOR;
cy_callout_driver.subtype = SERIAL_TYPE_CALLOUT;
cy_callout_driver.read_proc = 0;
cy_callout_driver.proc_entry = 0;
if (tty_register_driver(&cy_serial_driver))
panic("Couldn't register Cyclades serial driver\n");
if (tty_register_driver(&cy_callout_driver))
panic("Couldn't register Cyclades callout driver\n");
for (i = 0; i < NR_CARDS; i++) {
/* base_addr=0 indicates board not found */
......@@ -5629,8 +5572,6 @@ cy_init(void)
info->default_threshold = 0;
info->default_timeout = 0;
INIT_WORK(&info->tqueue, do_softint, info);
info->callout_termios =
cy_callout_driver.init_termios;
info->normal_termios =
cy_serial_driver.init_termios;
init_waitqueue_head(&info->open_wait);
......@@ -5708,8 +5649,6 @@ cy_init(void)
info->default_threshold = 0;
info->default_timeout = 0;
INIT_WORK(&info->tqueue, do_softint, info);
info->callout_termios =
cy_callout_driver.init_termios;
info->normal_termios =
cy_serial_driver.init_termios;
init_waitqueue_head(&info->open_wait);
......@@ -5761,9 +5700,6 @@ cy_cleanup_module(void)
if ((e1 = tty_unregister_driver(&cy_serial_driver)))
printk("cyc: failed to unregister Cyclades serial driver(%d)\n",
e1);
if ((e2 = tty_unregister_driver(&cy_callout_driver)))
printk("cyc: failed to unregister Cyclades callout driver (%d)\n",
e2);
restore_flags(flags);
......
include/linux/cyclades.h
View file @ 6be5e2cb
......@@ -588,8 +588,6 @@ struct cyclades_port {
int breakon;
int breakoff;
int blocked_open; /* # of blocked opens */
long session; /* Session of opening process */
long pgrp; /* pgrp of opening process */
unsigned char *xmit_buf;
int xmit_head;
int xmit_tail;
......@@ -599,7 +597,6 @@ struct cyclades_port {
unsigned long jiffies[3];
unsigned long rflush_count;
struct termios normal_termios;
struct termios callout_termios;
struct cyclades_monitor mon;
struct cyclades_idle_stats idle_stats;
struct cyclades_icount icount;
......
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