aboutsummaryrefslogtreecommitdiff
path: root/drivers/isdn/gigaset/interface.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/isdn/gigaset/interface.c')
-rw-r--r--drivers/isdn/gigaset/interface.c404
1 files changed, 142 insertions, 262 deletions
diff --git a/drivers/isdn/gigaset/interface.c b/drivers/isdn/gigaset/interface.c
index af195b07c19..600c79b030c 100644
--- a/drivers/isdn/gigaset/interface.c
+++ b/drivers/isdn/gigaset/interface.c
@@ -13,8 +13,8 @@
#include "gigaset.h"
#include <linux/gigaset_dev.h>
-#include <linux/tty.h>
#include <linux/tty_flip.h>
+#include <linux/module.h>
/*** our ioctls ***/
@@ -33,10 +33,10 @@ static int if_lock(struct cardstate *cs, int *arg)
}
if (!cmd && cs->mstate == MS_LOCKED && cs->connected) {
- cs->ops->set_modem_ctrl(cs, 0, TIOCM_DTR|TIOCM_RTS);
+ cs->ops->set_modem_ctrl(cs, 0, TIOCM_DTR | TIOCM_RTS);
cs->ops->baud_rate(cs, B115200);
cs->ops->set_line_ctrl(cs, CS8);
- cs->control_state = TIOCM_DTR|TIOCM_RTS;
+ cs->control_state = TIOCM_DTR | TIOCM_RTS;
}
cs->waiting = 1;
@@ -45,8 +45,6 @@ static int if_lock(struct cardstate *cs, int *arg)
cs->waiting = 0;
return -ENOMEM;
}
-
- gig_dbg(DEBUG_CMD, "scheduling IF_LOCK");
gigaset_schedule_event(cs);
wait_event(cs->waitqueue, !cs->waiting);
@@ -81,8 +79,6 @@ static int if_version(struct cardstate *cs, unsigned arg[4])
cs->waiting = 0;
return -ENOMEM;
}
-
- gig_dbg(DEBUG_CMD, "scheduling IF_VER");
gigaset_schedule_event(cs);
wait_event(cs->waitqueue, !cs->waiting);
@@ -107,7 +103,7 @@ static int if_config(struct cardstate *cs, int *arg)
return -EBUSY;
if (!cs->connected) {
- err("not connected!");
+ pr_err("%s: not connected\n", __func__);
return -ENODEV;
}
@@ -116,65 +112,29 @@ static int if_config(struct cardstate *cs, int *arg)
}
/*** the terminal driver ***/
-/* stolen from usbserial and some other tty drivers */
-
-static int if_open(struct tty_struct *tty, struct file *filp);
-static void if_close(struct tty_struct *tty, struct file *filp);
-static int if_ioctl(struct tty_struct *tty, struct file *file,
- unsigned int cmd, unsigned long arg);
-static int if_write_room(struct tty_struct *tty);
-static int if_chars_in_buffer(struct tty_struct *tty);
-static void if_throttle(struct tty_struct *tty);
-static void if_unthrottle(struct tty_struct *tty);
-static void if_set_termios(struct tty_struct *tty, struct ktermios *old);
-static int if_tiocmget(struct tty_struct *tty, struct file *file);
-static int if_tiocmset(struct tty_struct *tty, struct file *file,
- unsigned int set, unsigned int clear);
-static int if_write(struct tty_struct *tty,
- const unsigned char *buf, int count);
-
-static const struct tty_operations if_ops = {
- .open = if_open,
- .close = if_close,
- .ioctl = if_ioctl,
- .write = if_write,
- .write_room = if_write_room,
- .chars_in_buffer = if_chars_in_buffer,
- .set_termios = if_set_termios,
- .throttle = if_throttle,
- .unthrottle = if_unthrottle,
-#if 0
- .break_ctl = serial_break,
-#endif
- .tiocmget = if_tiocmget,
- .tiocmset = if_tiocmset,
-};
static int if_open(struct tty_struct *tty, struct file *filp)
{
struct cardstate *cs;
- unsigned long flags;
gig_dbg(DEBUG_IF, "%d+%d: %s()",
tty->driver->minor_start, tty->index, __func__);
- tty->driver_data = NULL;
-
cs = gigaset_get_cs_by_tty(tty);
if (!cs || !try_module_get(cs->driver->owner))
return -ENODEV;
- if (mutex_lock_interruptible(&cs->mutex))
- return -ERESTARTSYS; // FIXME -EINTR?
+ if (mutex_lock_interruptible(&cs->mutex)) {
+ module_put(cs->driver->owner);
+ return -ERESTARTSYS;
+ }
tty->driver_data = cs;
- ++cs->open_count;
+ ++cs->port.count;
- if (cs->open_count == 1) {
- spin_lock_irqsave(&cs->lock, flags);
- cs->tty = tty;
- spin_unlock_irqrestore(&cs->lock, flags);
- tty->low_latency = 1; //FIXME test
+ if (cs->port.count == 1) {
+ tty_port_tty_set(&cs->port, tty);
+ cs->port.low_latency = 1;
}
mutex_unlock(&cs->mutex);
@@ -183,12 +143,10 @@ static int if_open(struct tty_struct *tty, struct file *filp)
static void if_close(struct tty_struct *tty, struct file *filp)
{
- struct cardstate *cs;
- unsigned long flags;
+ struct cardstate *cs = tty->driver_data;
- cs = (struct cardstate *) tty->driver_data;
- if (!cs) {
- err("cs==NULL in %s", __func__);
+ if (!cs) { /* happens if we didn't find cs in open */
+ gig_dbg(DEBUG_IF, "%s: no cardstate", __func__);
return;
}
@@ -196,44 +154,36 @@ static void if_close(struct tty_struct *tty, struct file *filp)
mutex_lock(&cs->mutex);
- if (!cs->open_count)
- warn("%s: device not opened", __func__);
- else {
- if (!--cs->open_count) {
- spin_lock_irqsave(&cs->lock, flags);
- cs->tty = NULL;
- spin_unlock_irqrestore(&cs->lock, flags);
- }
- }
+ if (!cs->connected)
+ gig_dbg(DEBUG_IF, "not connected"); /* nothing to do */
+ else if (!cs->port.count)
+ dev_warn(cs->dev, "%s: device not opened\n", __func__);
+ else if (!--cs->port.count)
+ tty_port_tty_set(&cs->port, NULL);
mutex_unlock(&cs->mutex);
module_put(cs->driver->owner);
}
-static int if_ioctl(struct tty_struct *tty, struct file *file,
+static int if_ioctl(struct tty_struct *tty,
unsigned int cmd, unsigned long arg)
{
- struct cardstate *cs;
+ struct cardstate *cs = tty->driver_data;
int retval = -ENODEV;
int int_arg;
unsigned char buf[6];
unsigned version[4];
- cs = (struct cardstate *) tty->driver_data;
- if (!cs) {
- err("cs==NULL in %s", __func__);
- return -ENODEV;
- }
-
gig_dbg(DEBUG_IF, "%u: %s(0x%x)", cs->minor_index, __func__, cmd);
if (mutex_lock_interruptible(&cs->mutex))
- return -ERESTARTSYS; // FIXME -EINTR?
+ return -ERESTARTSYS;
- if (!cs->open_count)
- warn("%s: device not opened", __func__);
- else {
+ if (!cs->connected) {
+ gig_dbg(DEBUG_IF, "not connected");
+ retval = -ENODEV;
+ } else {
retval = 0;
switch (cmd) {
case GIGASET_REDIR:
@@ -251,25 +201,18 @@ static int if_ioctl(struct tty_struct *tty, struct file *file,
retval = put_user(int_arg, (int __user *) arg);
break;
case GIGASET_BRKCHARS:
- //FIXME test if MS_LOCKED
- if (!cs->connected) {
- gig_dbg(DEBUG_ANY,
- "can't communicate with unplugged device");
- retval = -ENODEV;
- break;
- }
retval = copy_from_user(&buf,
- (const unsigned char __user *) arg, 6)
+ (const unsigned char __user *) arg, 6)
? -EFAULT : 0;
if (retval >= 0) {
gigaset_dbg_buffer(DEBUG_IF, "GIGASET_BRKCHARS",
- 6, (const unsigned char *) arg);
+ 6, (const unsigned char *) arg);
retval = cs->ops->brkchars(cs, buf);
}
break;
case GIGASET_VERSION:
retval = copy_from_user(version,
- (unsigned __user *) arg, sizeof version)
+ (unsigned __user *) arg, sizeof version)
? -EFAULT : 0;
if (retval >= 0)
retval = if_version(cs, version);
@@ -279,7 +222,7 @@ static int if_ioctl(struct tty_struct *tty, struct file *file,
? -EFAULT : 0;
break;
default:
- gig_dbg(DEBUG_ANY, "%s: arg not supported - 0x%04x",
+ gig_dbg(DEBUG_IF, "%s: arg not supported - 0x%04x",
__func__, cmd);
retval = -ENOIOCTLCMD;
}
@@ -290,54 +233,41 @@ static int if_ioctl(struct tty_struct *tty, struct file *file,
return retval;
}
-static int if_tiocmget(struct tty_struct *tty, struct file *file)
+static int if_tiocmget(struct tty_struct *tty)
{
- struct cardstate *cs;
+ struct cardstate *cs = tty->driver_data;
int retval;
- cs = (struct cardstate *) tty->driver_data;
- if (!cs) {
- err("cs==NULL in %s", __func__);
- return -ENODEV;
- }
-
gig_dbg(DEBUG_IF, "%u: %s()", cs->minor_index, __func__);
if (mutex_lock_interruptible(&cs->mutex))
- return -ERESTARTSYS; // FIXME -EINTR?
+ return -ERESTARTSYS;
- // FIXME read from device?
- retval = cs->control_state & (TIOCM_RTS|TIOCM_DTR);
+ retval = cs->control_state & (TIOCM_RTS | TIOCM_DTR);
mutex_unlock(&cs->mutex);
return retval;
}
-static int if_tiocmset(struct tty_struct *tty, struct file *file,
+static int if_tiocmset(struct tty_struct *tty,
unsigned int set, unsigned int clear)
{
- struct cardstate *cs;
+ struct cardstate *cs = tty->driver_data;
int retval;
unsigned mc;
- cs = (struct cardstate *) tty->driver_data;
- if (!cs) {
- err("cs==NULL in %s", __func__);
- return -ENODEV;
- }
-
gig_dbg(DEBUG_IF, "%u: %s(0x%x, 0x%x)",
cs->minor_index, __func__, set, clear);
if (mutex_lock_interruptible(&cs->mutex))
- return -ERESTARTSYS; // FIXME -EINTR?
+ return -ERESTARTSYS;
if (!cs->connected) {
- gig_dbg(DEBUG_ANY, "can't communicate with unplugged device");
+ gig_dbg(DEBUG_IF, "not connected");
retval = -ENODEV;
} else {
- mc = (cs->control_state | set) & ~clear & (TIOCM_RTS|TIOCM_DTR);
+ mc = (cs->control_state | set) & ~clear & (TIOCM_RTS | TIOCM_DTR);
retval = cs->ops->set_modem_ctrl(cs, cs->control_state, mc);
cs->control_state = mc;
}
@@ -349,62 +279,65 @@ static int if_tiocmset(struct tty_struct *tty, struct file *file,
static int if_write(struct tty_struct *tty, const unsigned char *buf, int count)
{
- struct cardstate *cs;
- int retval = -ENODEV;
-
- cs = (struct cardstate *) tty->driver_data;
- if (!cs) {
- err("cs==NULL in %s", __func__);
- return -ENODEV;
- }
+ struct cardstate *cs = tty->driver_data;
+ struct cmdbuf_t *cb;
+ int retval;
gig_dbg(DEBUG_IF, "%u: %s()", cs->minor_index, __func__);
if (mutex_lock_interruptible(&cs->mutex))
- return -ERESTARTSYS; // FIXME -EINTR?
+ return -ERESTARTSYS;
- if (!cs->open_count)
- warn("%s: device not opened", __func__);
- else if (cs->mstate != MS_LOCKED) {
- warn("can't write to unlocked device");
+ if (!cs->connected) {
+ gig_dbg(DEBUG_IF, "not connected");
+ retval = -ENODEV;
+ goto done;
+ }
+ if (cs->mstate != MS_LOCKED) {
+ dev_warn(cs->dev, "can't write to unlocked device\n");
retval = -EBUSY;
- } else if (!cs->connected) {
- gig_dbg(DEBUG_ANY, "can't write to unplugged device");
- retval = -EBUSY; //FIXME
- } else {
- retval = cs->ops->write_cmd(cs, buf, count,
- &cs->if_wake_tasklet);
+ goto done;
+ }
+ if (count <= 0) {
+ /* nothing to do */
+ retval = 0;
+ goto done;
}
- mutex_unlock(&cs->mutex);
+ cb = kmalloc(sizeof(struct cmdbuf_t) + count, GFP_KERNEL);
+ if (!cb) {
+ dev_err(cs->dev, "%s: out of memory\n", __func__);
+ retval = -ENOMEM;
+ goto done;
+ }
+ memcpy(cb->buf, buf, count);
+ cb->len = count;
+ cb->offset = 0;
+ cb->next = NULL;
+ cb->wake_tasklet = &cs->if_wake_tasklet;
+ retval = cs->ops->write_cmd(cs, cb);
+done:
+ mutex_unlock(&cs->mutex);
return retval;
}
static int if_write_room(struct tty_struct *tty)
{
- struct cardstate *cs;
- int retval = -ENODEV;
-
- cs = (struct cardstate *) tty->driver_data;
- if (!cs) {
- err("cs==NULL in %s", __func__);
- return -ENODEV;
- }
+ struct cardstate *cs = tty->driver_data;
+ int retval;
gig_dbg(DEBUG_IF, "%u: %s()", cs->minor_index, __func__);
if (mutex_lock_interruptible(&cs->mutex))
- return -ERESTARTSYS; // FIXME -EINTR?
+ return -ERESTARTSYS;
- if (!cs->open_count)
- warn("%s: device not opened", __func__);
- else if (cs->mstate != MS_LOCKED) {
- warn("can't write to unlocked device");
+ if (!cs->connected) {
+ gig_dbg(DEBUG_IF, "not connected");
+ retval = -ENODEV;
+ } else if (cs->mstate != MS_LOCKED) {
+ dev_warn(cs->dev, "can't write to unlocked device\n");
retval = -EBUSY;
- } else if (!cs->connected) {
- gig_dbg(DEBUG_ANY, "can't write to unplugged device");
- retval = -EBUSY; //FIXME
} else
retval = cs->ops->write_room(cs);
@@ -415,29 +348,18 @@ static int if_write_room(struct tty_struct *tty)
static int if_chars_in_buffer(struct tty_struct *tty)
{
- struct cardstate *cs;
- int retval = -ENODEV;
-
- cs = (struct cardstate *) tty->driver_data;
- if (!cs) {
- err("cs==NULL in %s", __func__);
- return -ENODEV;
- }
+ struct cardstate *cs = tty->driver_data;
+ int retval = 0;
gig_dbg(DEBUG_IF, "%u: %s()", cs->minor_index, __func__);
- if (mutex_lock_interruptible(&cs->mutex))
- return -ERESTARTSYS; // FIXME -EINTR?
+ mutex_lock(&cs->mutex);
- if (!cs->open_count)
- warn("%s: device not opened", __func__);
- else if (cs->mstate != MS_LOCKED) {
- warn("can't write to unlocked device");
- retval = -EBUSY;
- } else if (!cs->connected) {
- gig_dbg(DEBUG_ANY, "can't write to unplugged device");
- retval = -EBUSY; //FIXME
- } else
+ if (!cs->connected)
+ gig_dbg(DEBUG_IF, "not connected");
+ else if (cs->mstate != MS_LOCKED)
+ dev_warn(cs->dev, "can't write to unlocked device\n");
+ else
retval = cs->ops->chars_in_buffer(cs);
mutex_unlock(&cs->mutex);
@@ -447,82 +369,56 @@ static int if_chars_in_buffer(struct tty_struct *tty)
static void if_throttle(struct tty_struct *tty)
{
- struct cardstate *cs;
-
- cs = (struct cardstate *) tty->driver_data;
- if (!cs) {
- err("cs==NULL in %s", __func__);
- return;
- }
+ struct cardstate *cs = tty->driver_data;
gig_dbg(DEBUG_IF, "%u: %s()", cs->minor_index, __func__);
mutex_lock(&cs->mutex);
- if (!cs->open_count)
- warn("%s: device not opened", __func__);
- else {
- //FIXME
- }
+ if (!cs->connected)
+ gig_dbg(DEBUG_IF, "not connected"); /* nothing to do */
+ else
+ gig_dbg(DEBUG_IF, "%s: not implemented\n", __func__);
mutex_unlock(&cs->mutex);
}
static void if_unthrottle(struct tty_struct *tty)
{
- struct cardstate *cs;
-
- cs = (struct cardstate *) tty->driver_data;
- if (!cs) {
- err("cs==NULL in %s", __func__);
- return;
- }
+ struct cardstate *cs = tty->driver_data;
gig_dbg(DEBUG_IF, "%u: %s()", cs->minor_index, __func__);
mutex_lock(&cs->mutex);
- if (!cs->open_count)
- warn("%s: device not opened", __func__);
- else {
- //FIXME
- }
+ if (!cs->connected)
+ gig_dbg(DEBUG_IF, "not connected"); /* nothing to do */
+ else
+ gig_dbg(DEBUG_IF, "%s: not implemented\n", __func__);
mutex_unlock(&cs->mutex);
}
static void if_set_termios(struct tty_struct *tty, struct ktermios *old)
{
- struct cardstate *cs;
+ struct cardstate *cs = tty->driver_data;
unsigned int iflag;
unsigned int cflag;
unsigned int old_cflag;
unsigned int control_state, new_state;
- cs = (struct cardstate *) tty->driver_data;
- if (!cs) {
- err("cs==NULL in %s", __func__);
- return;
- }
-
gig_dbg(DEBUG_IF, "%u: %s()", cs->minor_index, __func__);
mutex_lock(&cs->mutex);
- if (!cs->open_count) {
- warn("%s: device not opened", __func__);
- goto out;
- }
-
if (!cs->connected) {
- gig_dbg(DEBUG_ANY, "can't communicate with unplugged device");
+ gig_dbg(DEBUG_IF, "not connected");
goto out;
}
- // stolen from mct_u232.c
- iflag = tty->termios->c_iflag;
- cflag = tty->termios->c_cflag;
- old_cflag = old ? old->c_cflag : cflag; //FIXME?
+ iflag = tty->termios.c_iflag;
+ cflag = tty->termios.c_cflag;
+ old_cflag = old ? old->c_cflag : cflag;
gig_dbg(DEBUG_IF, "%u: iflag %x cflag %x old %x",
cs->minor_index, iflag, cflag, old_cflag);
@@ -565,29 +461,6 @@ static void if_set_termios(struct tty_struct *tty, struct ktermios *old)
cs->ops->set_line_ctrl(cs, cflag);
-#if 0
- //FIXME this hangs M101 [ts 2005-03-09]
- //FIXME do we need this?
- /*
- * Set flow control: well, I do not really now how to handle DTR/RTS.
- * Just do what we have seen with SniffUSB on Win98.
- */
- /* Drop DTR/RTS if no flow control otherwise assert */
- gig_dbg(DEBUG_IF, "%u: control_state %x",
- cs->minor_index, control_state);
- new_state = control_state;
- if ((iflag & IXOFF) || (iflag & IXON) || (cflag & CRTSCTS))
- new_state |= TIOCM_DTR | TIOCM_RTS;
- else
- new_state &= ~(TIOCM_DTR | TIOCM_RTS);
- if (new_state != control_state) {
- gig_dbg(DEBUG_IF, "%u: new_state %x",
- cs->minor_index, new_state);
- gigaset_set_modem_ctrl(cs, control_state, new_state);
- control_state = new_state;
- }
-#endif
-
/* save off the modified port settings */
cs->control_state = control_state;
@@ -595,14 +468,27 @@ out:
mutex_unlock(&cs->mutex);
}
+static const struct tty_operations if_ops = {
+ .open = if_open,
+ .close = if_close,
+ .ioctl = if_ioctl,
+ .write = if_write,
+ .write_room = if_write_room,
+ .chars_in_buffer = if_chars_in_buffer,
+ .set_termios = if_set_termios,
+ .throttle = if_throttle,
+ .unthrottle = if_unthrottle,
+ .tiocmget = if_tiocmget,
+ .tiocmset = if_tiocmset,
+};
+
/* wakeup tasklet for the write operation */
static void if_wake(unsigned long data)
{
- struct cardstate *cs = (struct cardstate *) data;
+ struct cardstate *cs = (struct cardstate *)data;
- if (cs->tty)
- tty_wakeup(cs->tty);
+ tty_port_tty_wakeup(&cs->port);
}
/*** interface to common ***/
@@ -615,15 +501,16 @@ void gigaset_if_init(struct cardstate *cs)
if (!drv->have_tty)
return;
- tasklet_init(&cs->if_wake_tasklet, &if_wake, (unsigned long) cs);
+ tasklet_init(&cs->if_wake_tasklet, if_wake, (unsigned long) cs);
mutex_lock(&cs->mutex);
- cs->tty_dev = tty_register_device(drv->tty, cs->minor_index, NULL);
+ cs->tty_dev = tty_port_register_device(&cs->port, drv->tty,
+ cs->minor_index, NULL);
if (!IS_ERR(cs->tty_dev))
dev_set_drvdata(cs->tty_dev, cs);
else {
- warn("could not register device to the tty subsystem");
+ pr_warning("could not register device to the tty subsystem\n");
cs->tty_dev = NULL;
}
mutex_unlock(&cs->mutex);
@@ -643,21 +530,20 @@ void gigaset_if_free(struct cardstate *cs)
tty_unregister_device(drv->tty, cs->minor_index);
}
+/**
+ * gigaset_if_receive() - pass a received block of data to the tty device
+ * @cs: device descriptor structure.
+ * @buffer: received data.
+ * @len: number of bytes received.
+ *
+ * Called by asyncdata/isocdata if a block of data received from the
+ * device must be sent to userspace through the ttyG* device.
+ */
void gigaset_if_receive(struct cardstate *cs,
unsigned char *buffer, size_t len)
{
- unsigned long flags;
- struct tty_struct *tty;
-
- spin_lock_irqsave(&cs->lock, flags);
- if ((tty = cs->tty) == NULL)
- gig_dbg(DEBUG_ANY, "receive on closed device");
- else {
- tty_buffer_request_room(tty, len);
- tty_insert_flip_string(tty, buffer, len);
- tty_flip_buffer_push(tty);
- }
- spin_unlock_irqrestore(&cs->lock, flags);
+ tty_insert_flip_string(&cs->port, buffer, len);
+ tty_flip_buffer_push(&cs->port);
}
EXPORT_SYMBOL_GPL(gigaset_if_receive);
@@ -671,36 +557,30 @@ EXPORT_SYMBOL_GPL(gigaset_if_receive);
void gigaset_if_initdriver(struct gigaset_driver *drv, const char *procname,
const char *devname)
{
- unsigned minors = drv->minors;
int ret;
struct tty_driver *tty;
drv->have_tty = 0;
- if ((drv->tty = alloc_tty_driver(minors)) == NULL)
+ drv->tty = tty = alloc_tty_driver(drv->minors);
+ if (tty == NULL)
goto enomem;
- tty = drv->tty;
- tty->magic = TTY_DRIVER_MAGIC,
- tty->major = GIG_MAJOR,
- tty->type = TTY_DRIVER_TYPE_SERIAL,
- tty->subtype = SERIAL_TYPE_NORMAL,
+ tty->type = TTY_DRIVER_TYPE_SERIAL;
+ tty->subtype = SERIAL_TYPE_NORMAL;
tty->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
tty->driver_name = procname;
tty->name = devname;
tty->minor_start = drv->minor;
- tty->num = drv->minors;
-
- tty->owner = THIS_MODULE;
- tty->init_termios = tty_std_termios; //FIXME
- tty->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL; //FIXME
+ tty->init_termios = tty_std_termios;
+ tty->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL;
tty_set_operations(tty, &if_ops);
ret = tty_register_driver(tty);
if (ret < 0) {
- warn("failed to register tty driver (error %d)", ret);
+ pr_err("error %d registering tty driver\n", ret);
goto error;
}
gig_dbg(DEBUG_IF, "tty driver initialized");
@@ -708,7 +588,7 @@ void gigaset_if_initdriver(struct gigaset_driver *drv, const char *procname,
return;
enomem:
- warn("could not allocate tty structures");
+ pr_err("out of memory\n");
error:
if (drv->tty)
put_tty_driver(drv->tty);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-10 08:29:11 +0000