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tty/serial fixes for 3.10-rc2

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Here are some tty / serial driver fixes for 3.10-rc2.
 
 Nothing huge, although the rocket driver fix looks large, it's just
 moving the code around to fix the reported build issues in it.  Other
 than that, this has the fix for the of-reported lockdep warning from the
 vt layer, as well as some other needed bugfixes.
 
 All of these have been in linux-next for a while.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-3.10-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

Pull tty/serial fixes from Greg Kroah-Hartman:
 "Here are some tty / serial driver fixes for 3.10-rc2.

  Nothing huge, although the rocket driver fix looks large, it's just
  moving the code around to fix the reported build issues in it.  Other
  than that, this has the fix for the of-reported lockdep warning from
  the vt layer, as well as some other needed bugfixes.

  All of these have been in linux-next for a while"

* tag 'tty-3.10-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
  tty: mxser: Fix build warning introduced by dfc7b837c7 (Re: linux-next: build warning after merge of the tty.current tree)
  tty: mxser: fix usage of opmode_ioaddr
  serial: 8250_dw: add ACPI ID for Intel BayTrail
  TTY: Fix tty miss restart after we turn off flow-control
  tty/vt: Fix vc_deallocate() lock order
  TTY: ehv_bytechan: add missing platform_driver_unregister() when module exit
  TTY: rocket, fix more no-PCI warnings
  serial: mcf: missing uart_unregister_driver() on error in mcf_init()
  tty: serial: mpc5xxx: fix error handing in mpc52xx_uart_init()
  serial: samsung: add missing platform_driver_unregister() when module exit
  serial: pl011: protect attribute read from NULL platform data struct
  tty: nwpserial: Pass correct pointer to free_irq()
  serial: 8250_dw: Add valid clk pointer check
This commit is contained in:
Linus Torvalds 2013-05-23 09:28:34 -07:00
commit d979556257
13 changed files with 234 additions and 184 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/tty/ehv_bytechan.c
View File

@ -859,6 +859,7 @@ static int __init ehv_bc_init(void)
*/
static void __exit ehv_bc_exit(void)
{
platform_driver_unregister(&ehv_bc_tty_driver);
tty_unregister_driver(ehv_bc_driver);
put_tty_driver(ehv_bc_driver);
kfree(bcs);

11
drivers/tty/mxser.c
View File

@ -1618,8 +1618,12 @@ static int mxser_ioctl_special(unsigned int cmd, void __user *argp)
if (ip->type == PORT_16550A)
me->fifo[p] = 1;
opmode = inb(ip->opmode_ioaddr)>>((p % 4) * 2);
opmode &= OP_MODE_MASK;
if (ip->board->chip_flag == MOXA_MUST_MU860_HWID) {
opmode = inb(ip->opmode_ioaddr)>>((p % 4) * 2);
opmode &= OP_MODE_MASK;
} else {
opmode = RS232_MODE;
}
me->iftype[p] = opmode;
mutex_unlock(&port->mutex);
}
@ -1676,6 +1680,9 @@ static int mxser_ioctl(struct tty_struct *tty,
int shiftbit;
unsigned char val, mask;
if (info->board->chip_flag != MOXA_MUST_MU860_HWID)
return -EFAULT;
p = tty->index % 4;
if (cmd == MOXA_SET_OP_MODE) {
if (get_user(opmode, (int __user *) argp))

8
drivers/tty/n_tty.c
View File

@ -1573,6 +1573,14 @@ static void n_tty_set_termios(struct tty_struct *tty, struct ktermios *old)
ldata->real_raw = 0;
}
n_tty_set_room(tty);
/*
* Fix tty hang when I_IXON(tty) is cleared, but the tty
* been stopped by STOP_CHAR(tty) before it.
*/
if (!I_IXON(tty) && old && (old->c_iflag & IXON) && !tty->flow_stopped) {
start_tty(tty);
}
/* The termios change make the tty ready for I/O */
wake_up_interruptible(&tty->write_wait);
wake_up_interruptible(&tty->read_wait);

288
drivers/tty/rocket.c
View File

@ -150,12 +150,14 @@ static Word_t aiop_intr_bits[AIOP_CTL_SIZE] = {
AIOP_INTR_BIT_3
};
#ifdef CONFIG_PCI
static Word_t upci_aiop_intr_bits[AIOP_CTL_SIZE] = {
UPCI_AIOP_INTR_BIT_0,
UPCI_AIOP_INTR_BIT_1,
UPCI_AIOP_INTR_BIT_2,
UPCI_AIOP_INTR_BIT_3
};
#endif
static Byte_t RData[RDATASIZE] = {
0x00, 0x09, 0xf6, 0x82,
@ -227,7 +229,6 @@ static unsigned long nextLineNumber;
static int __init init_ISA(int i);
static void rp_wait_until_sent(struct tty_struct *tty, int timeout);
static void rp_flush_buffer(struct tty_struct *tty);
static void rmSpeakerReset(CONTROLLER_T * CtlP, unsigned long model);
static unsigned char GetLineNumber(int ctrl, int aiop, int ch);
static unsigned char SetLineNumber(int ctrl, int aiop, int ch);
static void rp_start(struct tty_struct *tty);
@ -241,11 +242,6 @@ static void sDisInterrupts(CHANNEL_T * ChP, Word_t Flags);
static void sModemReset(CONTROLLER_T * CtlP, int chan, int on);
static void sPCIModemReset(CONTROLLER_T * CtlP, int chan, int on);
static int sWriteTxPrioByte(CHANNEL_T * ChP, Byte_t Data);
static int sPCIInitController(CONTROLLER_T * CtlP, int CtlNum,
ByteIO_t * AiopIOList, int AiopIOListSize,
WordIO_t ConfigIO, int IRQNum, Byte_t Frequency,
int PeriodicOnly, int altChanRingIndicator,
int UPCIRingInd);
static int sInitController(CONTROLLER_T * CtlP, int CtlNum, ByteIO_t MudbacIO,
ByteIO_t * AiopIOList, int AiopIOListSize,
int IRQNum, Byte_t Frequency, int PeriodicOnly);
@ -1775,6 +1771,145 @@ static DEFINE_PCI_DEVICE_TABLE(rocket_pci_ids) = {
};
MODULE_DEVICE_TABLE(pci, rocket_pci_ids);
/* Resets the speaker controller on RocketModem II and III devices */
static void rmSpeakerReset(CONTROLLER_T * CtlP, unsigned long model)
{
ByteIO_t addr;
/* RocketModem II speaker control is at the 8th port location of offset 0x40 */
if ((model == MODEL_RP4M) || (model == MODEL_RP6M)) {
addr = CtlP->AiopIO[0] + 0x4F;
sOutB(addr, 0);
}
/* RocketModem III speaker control is at the 1st port location of offset 0x80 */
if ((model == MODEL_UPCI_RM3_8PORT)
|| (model == MODEL_UPCI_RM3_4PORT)) {
addr = CtlP->AiopIO[0] + 0x88;
sOutB(addr, 0);
}
}
/***************************************************************************
Function: sPCIInitController
Purpose: Initialization of controller global registers and controller
structure.
Call: sPCIInitController(CtlP,CtlNum,AiopIOList,AiopIOListSize,
IRQNum,Frequency,PeriodicOnly)
CONTROLLER_T *CtlP; Ptr to controller structure
int CtlNum; Controller number
ByteIO_t *AiopIOList; List of I/O addresses for each AIOP.
This list must be in the order the AIOPs will be found on the
controller. Once an AIOP in the list is not found, it is
assumed that there are no more AIOPs on the controller.
int AiopIOListSize; Number of addresses in AiopIOList
int IRQNum; Interrupt Request number. Can be any of the following:
0: Disable global interrupts
3: IRQ 3
4: IRQ 4
5: IRQ 5
9: IRQ 9
10: IRQ 10
11: IRQ 11
12: IRQ 12
15: IRQ 15
Byte_t Frequency: A flag identifying the frequency
of the periodic interrupt, can be any one of the following:
FREQ_DIS - periodic interrupt disabled
FREQ_137HZ - 137 Hertz
FREQ_69HZ - 69 Hertz
FREQ_34HZ - 34 Hertz
FREQ_17HZ - 17 Hertz
FREQ_9HZ - 9 Hertz
FREQ_4HZ - 4 Hertz
If IRQNum is set to 0 the Frequency parameter is
overidden, it is forced to a value of FREQ_DIS.
int PeriodicOnly: 1 if all interrupts except the periodic
interrupt are to be blocked.
0 is both the periodic interrupt and
other channel interrupts are allowed.
If IRQNum is set to 0 the PeriodicOnly parameter is
overidden, it is forced to a value of 0.
Return: int: Number of AIOPs on the controller, or CTLID_NULL if controller
initialization failed.
Comments:
If periodic interrupts are to be disabled but AIOP interrupts
are allowed, set Frequency to FREQ_DIS and PeriodicOnly to 0.
If interrupts are to be completely disabled set IRQNum to 0.
Setting Frequency to FREQ_DIS and PeriodicOnly to 1 is an
invalid combination.
This function performs initialization of global interrupt modes,
but it does not actually enable global interrupts. To enable
and disable global interrupts use functions sEnGlobalInt() and
sDisGlobalInt(). Enabling of global interrupts is normally not
done until all other initializations are complete.
Even if interrupts are globally enabled, they must also be
individually enabled for each channel that is to generate
interrupts.
Warnings: No range checking on any of the parameters is done.
No context switches are allowed while executing this function.
After this function all AIOPs on the controller are disabled,
they can be enabled with sEnAiop().
*/
static int sPCIInitController(CONTROLLER_T * CtlP, int CtlNum,
ByteIO_t * AiopIOList, int AiopIOListSize,
WordIO_t ConfigIO, int IRQNum, Byte_t Frequency,
int PeriodicOnly, int altChanRingIndicator,
int UPCIRingInd)
{
int i;
ByteIO_t io;
CtlP->AltChanRingIndicator = altChanRingIndicator;
CtlP->UPCIRingInd = UPCIRingInd;
CtlP->CtlNum = CtlNum;
CtlP->CtlID = CTLID_0001; /* controller release 1 */
CtlP->BusType = isPCI; /* controller release 1 */
if (ConfigIO) {
CtlP->isUPCI = 1;
CtlP->PCIIO = ConfigIO + _PCI_9030_INT_CTRL;
CtlP->PCIIO2 = ConfigIO + _PCI_9030_GPIO_CTRL;
CtlP->AiopIntrBits = upci_aiop_intr_bits;
} else {
CtlP->isUPCI = 0;
CtlP->PCIIO =
(WordIO_t) ((ByteIO_t) AiopIOList[0] + _PCI_INT_FUNC);
CtlP->AiopIntrBits = aiop_intr_bits;
}
sPCIControllerEOI(CtlP); /* clear EOI if warm init */
/* Init AIOPs */
CtlP->NumAiop = 0;
for (i = 0; i < AiopIOListSize; i++) {
io = AiopIOList[i];
CtlP->AiopIO[i] = (WordIO_t) io;
CtlP->AiopIntChanIO[i] = io + _INT_CHAN;
CtlP->AiopID[i] = sReadAiopID(io); /* read AIOP ID */
if (CtlP->AiopID[i] == AIOPID_NULL) /* if AIOP does not exist */
break; /* done looking for AIOPs */
CtlP->AiopNumChan[i] = sReadAiopNumChan((WordIO_t) io); /* num channels in AIOP */
sOutW((WordIO_t) io + _INDX_ADDR, _CLK_PRE); /* clock prescaler */
sOutB(io + _INDX_DATA, sClockPrescale);
CtlP->NumAiop++; /* bump count of AIOPs */
}
if (CtlP->NumAiop == 0)
return (-1);
else
return (CtlP->NumAiop);
}
/*
* Called when a PCI card is found. Retrieves and stores model information,
* init's aiopic and serial port hardware.
@ -2519,147 +2654,6 @@ static int sInitController(CONTROLLER_T * CtlP, int CtlNum, ByteIO_t MudbacIO,
return (CtlP->NumAiop);
}
#ifdef CONFIG_PCI
/***************************************************************************
Function: sPCIInitController
Purpose: Initialization of controller global registers and controller
structure.
Call: sPCIInitController(CtlP,CtlNum,AiopIOList,AiopIOListSize,
IRQNum,Frequency,PeriodicOnly)
CONTROLLER_T *CtlP; Ptr to controller structure
int CtlNum; Controller number
ByteIO_t *AiopIOList; List of I/O addresses for each AIOP.
This list must be in the order the AIOPs will be found on the
controller. Once an AIOP in the list is not found, it is
assumed that there are no more AIOPs on the controller.
int AiopIOListSize; Number of addresses in AiopIOList
int IRQNum; Interrupt Request number. Can be any of the following:
0: Disable global interrupts
3: IRQ 3
4: IRQ 4
5: IRQ 5
9: IRQ 9
10: IRQ 10
11: IRQ 11
12: IRQ 12
15: IRQ 15
Byte_t Frequency: A flag identifying the frequency
of the periodic interrupt, can be any one of the following:
FREQ_DIS - periodic interrupt disabled
FREQ_137HZ - 137 Hertz
FREQ_69HZ - 69 Hertz
FREQ_34HZ - 34 Hertz
FREQ_17HZ - 17 Hertz
FREQ_9HZ - 9 Hertz
FREQ_4HZ - 4 Hertz
If IRQNum is set to 0 the Frequency parameter is
overidden, it is forced to a value of FREQ_DIS.
int PeriodicOnly: 1 if all interrupts except the periodic
interrupt are to be blocked.
0 is both the periodic interrupt and
other channel interrupts are allowed.
If IRQNum is set to 0 the PeriodicOnly parameter is
overidden, it is forced to a value of 0.
Return: int: Number of AIOPs on the controller, or CTLID_NULL if controller
initialization failed.
Comments:
If periodic interrupts are to be disabled but AIOP interrupts
are allowed, set Frequency to FREQ_DIS and PeriodicOnly to 0.
If interrupts are to be completely disabled set IRQNum to 0.
Setting Frequency to FREQ_DIS and PeriodicOnly to 1 is an
invalid combination.
This function performs initialization of global interrupt modes,
but it does not actually enable global interrupts. To enable
and disable global interrupts use functions sEnGlobalInt() and
sDisGlobalInt(). Enabling of global interrupts is normally not
done until all other initializations are complete.
Even if interrupts are globally enabled, they must also be
individually enabled for each channel that is to generate
interrupts.
Warnings: No range checking on any of the parameters is done.
No context switches are allowed while executing this function.
After this function all AIOPs on the controller are disabled,
they can be enabled with sEnAiop().
*/
static int sPCIInitController(CONTROLLER_T * CtlP, int CtlNum,
ByteIO_t * AiopIOList, int AiopIOListSize,
WordIO_t ConfigIO, int IRQNum, Byte_t Frequency,
int PeriodicOnly, int altChanRingIndicator,
int UPCIRingInd)
{
int i;
ByteIO_t io;
CtlP->AltChanRingIndicator = altChanRingIndicator;
CtlP->UPCIRingInd = UPCIRingInd;
CtlP->CtlNum = CtlNum;
CtlP->CtlID = CTLID_0001; /* controller release 1 */
CtlP->BusType = isPCI; /* controller release 1 */
if (ConfigIO) {
CtlP->isUPCI = 1;
CtlP->PCIIO = ConfigIO + _PCI_9030_INT_CTRL;
CtlP->PCIIO2 = ConfigIO + _PCI_9030_GPIO_CTRL;
CtlP->AiopIntrBits = upci_aiop_intr_bits;
} else {
CtlP->isUPCI = 0;
CtlP->PCIIO =
(WordIO_t) ((ByteIO_t) AiopIOList[0] + _PCI_INT_FUNC);
CtlP->AiopIntrBits = aiop_intr_bits;
}
sPCIControllerEOI(CtlP); /* clear EOI if warm init */
/* Init AIOPs */
CtlP->NumAiop = 0;
for (i = 0; i < AiopIOListSize; i++) {
io = AiopIOList[i];
CtlP->AiopIO[i] = (WordIO_t) io;
CtlP->AiopIntChanIO[i] = io + _INT_CHAN;
CtlP->AiopID[i] = sReadAiopID(io); /* read AIOP ID */
if (CtlP->AiopID[i] == AIOPID_NULL) /* if AIOP does not exist */
break; /* done looking for AIOPs */
CtlP->AiopNumChan[i] = sReadAiopNumChan((WordIO_t) io); /* num channels in AIOP */
sOutW((WordIO_t) io + _INDX_ADDR, _CLK_PRE); /* clock prescaler */
sOutB(io + _INDX_DATA, sClockPrescale);
CtlP->NumAiop++; /* bump count of AIOPs */
}
if (CtlP->NumAiop == 0)
return (-1);
else
return (CtlP->NumAiop);
}
/* Resets the speaker controller on RocketModem II and III devices */
static void rmSpeakerReset(CONTROLLER_T * CtlP, unsigned long model)
{
ByteIO_t addr;
/* RocketModem II speaker control is at the 8th port location of offset 0x40 */
if ((model == MODEL_RP4M) || (model == MODEL_RP6M)) {
addr = CtlP->AiopIO[0] + 0x4F;
sOutB(addr, 0);
}
/* RocketModem III speaker control is at the 1st port location of offset 0x80 */
if ((model == MODEL_UPCI_RM3_8PORT)
|| (model == MODEL_UPCI_RM3_4PORT)) {
addr = CtlP->AiopIO[0] + 0x88;
sOutB(addr, 0);
}
}
#endif
/***************************************************************************
Function: sReadAiopID
Purpose: Read the AIOP idenfication number directly from an AIOP.

7
drivers/tty/serial/8250/8250_dw.c
View File

@ -338,7 +338,8 @@ static int dw8250_runtime_suspend(struct device *dev)
{
struct dw8250_data *data = dev_get_drvdata(dev);
clk_disable_unprepare(data->clk);
if (!IS_ERR(data->clk))
clk_disable_unprepare(data->clk);
return 0;
}
@ -347,7 +348,8 @@ static int dw8250_runtime_resume(struct device *dev)
{
struct dw8250_data *data = dev_get_drvdata(dev);
clk_prepare_enable(data->clk);
if (!IS_ERR(data->clk))
clk_prepare_enable(data->clk);
return 0;
}
@ -367,6 +369,7 @@ MODULE_DEVICE_TABLE(of, dw8250_of_match);
static const struct acpi_device_id dw8250_acpi_match[] = {
{ "INT33C4", 0 },
{ "INT33C5", 0 },
{ "80860F0A", 0 },
{ },
};
MODULE_DEVICE_TABLE(acpi, dw8250_acpi_match);

2
drivers/tty/serial/amba-pl011.c
View File

@ -332,7 +332,7 @@ static void pl011_dma_probe_initcall(struct device *dev, struct uart_amba_port *
dmaengine_slave_config(chan, &rx_conf);
uap->dmarx.chan = chan;
if (plat->dma_rx_poll_enable) {
if (plat && plat->dma_rx_poll_enable) {
/* Set poll rate if specified. */
if (plat->dma_rx_poll_rate) {
uap->dmarx.auto_poll_rate = false;

4
drivers/tty/serial/mcf.c
View File

@ -707,8 +707,10 @@ static int __init mcf_init(void)
if (rc)
return rc;
rc = platform_driver_register(&mcf_platform_driver);
if (rc)
if (rc) {
uart_unregister_driver(&mcf_driver);
return rc;
}
return 0;
}

11
drivers/tty/serial/mpc52xx_uart.c
View File

@ -1497,18 +1497,23 @@ mpc52xx_uart_init(void)
if (psc_ops && psc_ops->fifoc_init) {
ret = psc_ops->fifoc_init();
if (ret)
return ret;
goto err_init;
}
ret = platform_driver_register(&mpc52xx_uart_of_driver);
if (ret) {
printk(KERN_ERR "%s: platform_driver_register failed (%i)\n",
__FILE__, ret);
uart_unregister_driver(&mpc52xx_uart_driver);
return ret;
goto err_reg;
}
return 0;
err_reg:
if (psc_ops && psc_ops->fifoc_uninit)
psc_ops->fifoc_uninit();
err_init:
uart_unregister_driver(&mpc52xx_uart_driver);
return ret;
}
static void __exit

2
drivers/tty/serial/nwpserial.c
View File

@ -199,7 +199,7 @@ static void nwpserial_shutdown(struct uart_port *port)
dcr_write(up->dcr_host, UART_IER, up->ier);
/* free irq */
free_irq(up->port.irq, port);
free_irq(up->port.irq, up);
}
static int nwpserial_verify_port(struct uart_port *port,

1
drivers/tty/serial/samsung.c
View File

@ -1803,6 +1803,7 @@ static int __init s3c24xx_serial_modinit(void)
static void __exit s3c24xx_serial_modexit(void)
{
platform_driver_unregister(&samsung_serial_driver);
uart_unregister_driver(&s3c24xx_uart_drv);
}

14
drivers/tty/vt/vt.c
View File

@ -779,7 +779,6 @@ int vc_allocate(unsigned int currcons) /* return 0 on success */
con_set_default_unimap(vc);
vc->vc_screenbuf = kmalloc(vc->vc_screenbuf_size, GFP_KERNEL);
if (!vc->vc_screenbuf) {
tty_port_destroy(&vc->port);
kfree(vc);
vc_cons[currcons].d = NULL;
return -ENOMEM;
@ -986,26 +985,25 @@ static int vt_resize(struct tty_struct *tty, struct winsize *ws)
return ret;
}
void vc_deallocate(unsigned int currcons)
struct vc_data *vc_deallocate(unsigned int currcons)
{
struct vc_data *vc = NULL;
WARN_CONSOLE_UNLOCKED();
if (vc_cons_allocated(currcons)) {
struct vc_data *vc = vc_cons[currcons].d;
struct vt_notifier_param param = { .vc = vc };
struct vt_notifier_param param;
param.vc = vc = vc_cons[currcons].d;
atomic_notifier_call_chain(&vt_notifier_list, VT_DEALLOCATE, &param);
vcs_remove_sysfs(currcons);
vc->vc_sw->con_deinit(vc);
put_pid(vc->vt_pid);
module_put(vc->vc_sw->owner);
kfree(vc->vc_screenbuf);
if (currcons >= MIN_NR_CONSOLES) {
tty_port_destroy(&vc->port);
kfree(vc);
}
vc_cons[currcons].d = NULL;
}
return vc;
}
/*

67
drivers/tty/vt/vt_ioctl.c
View File

@ -283,6 +283,51 @@ do_unimap_ioctl(int cmd, struct unimapdesc __user *user_ud, int perm, struct vc_
return 0;
}
/* deallocate a single console, if possible (leave 0) */
static int vt_disallocate(unsigned int vc_num)
{
struct vc_data *vc = NULL;
int ret = 0;
if (!vc_num)
return 0;
console_lock();
if (VT_BUSY(vc_num))
ret = -EBUSY;
else
vc = vc_deallocate(vc_num);
console_unlock();
if (vc && vc_num >= MIN_NR_CONSOLES) {
tty_port_destroy(&vc->port);
kfree(vc);
}
return ret;
}
/* deallocate all unused consoles, but leave 0 */
static void vt_disallocate_all(void)
{
struct vc_data *vc[MAX_NR_CONSOLES];
int i;
console_lock();
for (i = 1; i < MAX_NR_CONSOLES; i++)
if (!VT_BUSY(i))
vc[i] = vc_deallocate(i);
else
vc[i] = NULL;
console_unlock();
for (i = 1; i < MAX_NR_CONSOLES; i++) {
if (vc[i] && i >= MIN_NR_CONSOLES) {
tty_port_destroy(&vc[i]->port);
kfree(vc[i]);
}
}
}
/*
@ -769,24 +814,10 @@ int vt_ioctl(struct tty_struct *tty,
ret = -ENXIO;
break;
}
if (arg == 0) {
/* deallocate all unused consoles, but leave 0 */
console_lock();
for (i=1; i<MAX_NR_CONSOLES; i++)
if (! VT_BUSY(i))
vc_deallocate(i);
console_unlock();
} else {
/* deallocate a single console, if possible */
arg--;
if (VT_BUSY(arg))
ret = -EBUSY;
else if (arg) { /* leave 0 */
console_lock();
vc_deallocate(arg);
console_unlock();
}
}
if (arg == 0)
vt_disallocate_all();
else
ret = vt_disallocate(--arg);
break;
case VT_RESIZE:

2
include/linux/vt_kern.h
View File

@ -36,7 +36,7 @@ extern int fg_console, last_console, want_console;
int vc_allocate(unsigned int console);
int vc_cons_allocated(unsigned int console);
int vc_resize(struct vc_data *vc, unsigned int cols, unsigned int lines);
void vc_deallocate(unsigned int console);
struct vc_data *vc_deallocate(unsigned int console);
void reset_palette(struct vc_data *vc);
void do_blank_screen(int entering_gfx);
void do_unblank_screen(int leaving_gfx);