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-rw-r--r--drivers/char/amiserial.c18
-rw-r--r--drivers/char/generic_serial.c14
-rw-r--r--drivers/char/istallion.c1
-rw-r--r--drivers/char/n_tty.c10
-rw-r--r--drivers/char/nwflash.c11
-rw-r--r--drivers/char/raw.c23
-rw-r--r--drivers/char/ser_a2232.c4
-rw-r--r--drivers/char/snsc.c8
-rw-r--r--drivers/char/snsc_event.c5
-rw-r--r--drivers/char/stallion.c1
-rw-r--r--drivers/char/sx.c2
-rw-r--r--drivers/char/tty_io.c50
-rw-r--r--drivers/char/vme_scc.c2
-rw-r--r--drivers/char/vt.c22
-rw-r--r--drivers/char/watchdog/pcwd_usb.c7
15 files changed, 88 insertions, 90 deletions
diff --git a/drivers/char/amiserial.c b/drivers/char/amiserial.c
index 7ac365b5d9e..6602b3156df 100644
--- a/drivers/char/amiserial.c
+++ b/drivers/char/amiserial.c
@@ -46,8 +46,6 @@
/* Sanity checks */
-#define SERIAL_INLINE
-
#if defined(MODULE) && defined(SERIAL_DEBUG_MCOUNT)
#define DBG_CNT(s) printk("(%s): [%x] refc=%d, serc=%d, ttyc=%d -> %s\n", \
tty->name, (info->flags), serial_driver->refcount,info->count,tty->count,s)
@@ -95,10 +93,6 @@ static char *serial_version = "4.30";
#include <asm/amigahw.h>
#include <asm/amigaints.h>
-#ifdef SERIAL_INLINE
-#define _INLINE_ inline
-#endif
-
#define custom amiga_custom
static char *serial_name = "Amiga-builtin serial driver";
@@ -253,14 +247,14 @@ static void rs_start(struct tty_struct *tty)
* This routine is used by the interrupt handler to schedule
* processing in the software interrupt portion of the driver.
*/
-static _INLINE_ void rs_sched_event(struct async_struct *info,
- int event)
+static void rs_sched_event(struct async_struct *info,
+ int event)
{
info->event |= 1 << event;
tasklet_schedule(&info->tlet);
}
-static _INLINE_ void receive_chars(struct async_struct *info)
+static void receive_chars(struct async_struct *info)
{
int status;
int serdatr;
@@ -349,7 +343,7 @@ out:
return;
}
-static _INLINE_ void transmit_chars(struct async_struct *info)
+static void transmit_chars(struct async_struct *info)
{
custom.intreq = IF_TBE;
mb();
@@ -389,7 +383,7 @@ static _INLINE_ void transmit_chars(struct async_struct *info)
}
}
-static _INLINE_ void check_modem_status(struct async_struct *info)
+static void check_modem_status(struct async_struct *info)
{
unsigned char status = ciab.pra & (SER_DCD | SER_CTS | SER_DSR);
unsigned char dstatus;
@@ -1959,7 +1953,7 @@ done:
* number, and identifies which options were configured into this
* driver.
*/
-static _INLINE_ void show_serial_version(void)
+static void show_serial_version(void)
{
printk(KERN_INFO "%s version %s\n", serial_name, serial_version);
}
diff --git a/drivers/char/generic_serial.c b/drivers/char/generic_serial.c
index e38a5f0e07b..5e59c0b4273 100644
--- a/drivers/char/generic_serial.c
+++ b/drivers/char/generic_serial.c
@@ -48,8 +48,8 @@ static int gs_debug;
#define NEW_WRITE_LOCKING 1
#if NEW_WRITE_LOCKING
#define DECL /* Nothing */
-#define LOCKIT down (& port->port_write_sem);
-#define RELEASEIT up (&port->port_write_sem);
+#define LOCKIT mutex_lock(& port->port_write_mutex);
+#define RELEASEIT mutex_unlock(&port->port_write_mutex);
#else
#define DECL unsigned long flags;
#define LOCKIT save_flags (flags);cli ()
@@ -124,14 +124,14 @@ int gs_write(struct tty_struct * tty,
/* get exclusive "write" access to this port (problem 3) */
/* This is not a spinlock because we can have a disk access (page
fault) in copy_from_user */
- down (& port->port_write_sem);
+ mutex_lock(& port->port_write_mutex);
while (1) {
c = count;
/* This is safe because we "OWN" the "head". Noone else can
- change the "head": we own the port_write_sem. */
+ change the "head": we own the port_write_mutex. */
/* Don't overrun the end of the buffer */
t = SERIAL_XMIT_SIZE - port->xmit_head;
if (t < c) c = t;
@@ -153,7 +153,7 @@ int gs_write(struct tty_struct * tty,
count -= c;
total += c;
}
- up (& port->port_write_sem);
+ mutex_unlock(& port->port_write_mutex);
gs_dprintk (GS_DEBUG_WRITE, "write: interrupts are %s\n",
(port->flags & GS_TX_INTEN)?"enabled": "disabled");
@@ -214,7 +214,7 @@ int gs_write(struct tty_struct * tty,
c = count;
/* This is safe because we "OWN" the "head". Noone else can
- change the "head": we own the port_write_sem. */
+ change the "head": we own the port_write_mutex. */
/* Don't overrun the end of the buffer */
t = SERIAL_XMIT_SIZE - port->xmit_head;
if (t < c) c = t;
@@ -888,7 +888,7 @@ int gs_init_port(struct gs_port *port)
spin_lock_irqsave (&port->driver_lock, flags);
if (port->tty)
clear_bit(TTY_IO_ERROR, &port->tty->flags);
- init_MUTEX(&port->port_write_sem);
+ mutex_init(&port->port_write_mutex);
port->xmit_cnt = port->xmit_head = port->xmit_tail = 0;
spin_unlock_irqrestore(&port->driver_lock, flags);
gs_set_termios(port->tty, NULL);
diff --git a/drivers/char/istallion.c b/drivers/char/istallion.c
index 28c5a3193b8..ede128356af 100644
--- a/drivers/char/istallion.c
+++ b/drivers/char/istallion.c
@@ -181,7 +181,6 @@ static struct tty_driver *stli_serial;
* is already swapping a shared buffer won't make things any worse.
*/
static char *stli_tmpwritebuf;
-static DECLARE_MUTEX(stli_tmpwritesem);
#define STLI_TXBUFSIZE 4096
diff --git a/drivers/char/n_tty.c b/drivers/char/n_tty.c
index ccad7ae9454..ede365d0538 100644
--- a/drivers/char/n_tty.c
+++ b/drivers/char/n_tty.c
@@ -132,7 +132,7 @@ static void put_tty_queue(unsigned char c, struct tty_struct *tty)
* We test the TTY_THROTTLED bit first so that it always
* indicates the current state. The decision about whether
* it is worth allowing more input has been taken by the caller.
- * Can sleep, may be called under the atomic_read semaphore but
+ * Can sleep, may be called under the atomic_read_lock mutex but
* this is not guaranteed.
*/
@@ -1132,7 +1132,7 @@ static inline int input_available_p(struct tty_struct *tty, int amt)
* buffer, and once to drain the space from the (physical) beginning of
* the buffer to head pointer.
*
- * Called under the tty->atomic_read sem and with TTY_DONT_FLIP set
+ * Called under the tty->atomic_read_lock sem and with TTY_DONT_FLIP set
*
*/
@@ -1262,11 +1262,11 @@ do_it_again:
* Internal serialization of reads.
*/
if (file->f_flags & O_NONBLOCK) {
- if (down_trylock(&tty->atomic_read))
+ if (!mutex_trylock(&tty->atomic_read_lock))
return -EAGAIN;
}
else {
- if (down_interruptible(&tty->atomic_read))
+ if (mutex_lock_interruptible(&tty->atomic_read_lock))
return -ERESTARTSYS;
}
@@ -1393,7 +1393,7 @@ do_it_again:
timeout = time;
}
clear_bit(TTY_DONT_FLIP, &tty->flags);
- up(&tty->atomic_read);
+ mutex_unlock(&tty->atomic_read_lock);
remove_wait_queue(&tty->read_wait, &wait);
if (!waitqueue_active(&tty->read_wait))
diff --git a/drivers/char/nwflash.c b/drivers/char/nwflash.c
index ca41d62b1d9..8865387d344 100644
--- a/drivers/char/nwflash.c
+++ b/drivers/char/nwflash.c
@@ -27,6 +27,7 @@
#include <linux/rwsem.h>
#include <linux/init.h>
#include <linux/smp_lock.h>
+#include <linux/mutex.h>
#include <asm/hardware/dec21285.h>
#include <asm/io.h>
@@ -56,7 +57,7 @@ static int gbWriteEnable;
static int gbWriteBase64Enable;
static volatile unsigned char *FLASH_BASE;
static int gbFlashSize = KFLASH_SIZE;
-static DECLARE_MUTEX(nwflash_sem);
+static DEFINE_MUTEX(nwflash_mutex);
extern spinlock_t gpio_lock;
@@ -140,7 +141,7 @@ static ssize_t flash_read(struct file *file, char __user *buf, size_t size,
/*
* We now lock against reads and writes. --rmk
*/
- if (down_interruptible(&nwflash_sem))
+ if (mutex_lock_interruptible(&nwflash_mutex))
return -ERESTARTSYS;
ret = copy_to_user(buf, (void *)(FLASH_BASE + p), count);
@@ -149,7 +150,7 @@ static ssize_t flash_read(struct file *file, char __user *buf, size_t size,
*ppos += count;
} else
ret = -EFAULT;
- up(&nwflash_sem);
+ mutex_unlock(&nwflash_mutex);
}
return ret;
}
@@ -188,7 +189,7 @@ static ssize_t flash_write(struct file *file, const char __user *buf,
/*
* We now lock against reads and writes. --rmk
*/
- if (down_interruptible(&nwflash_sem))
+ if (mutex_lock_interruptible(&nwflash_mutex))
return -ERESTARTSYS;
written = 0;
@@ -277,7 +278,7 @@ static ssize_t flash_write(struct file *file, const char __user *buf,
*/
leds_event(led_release);
- up(&nwflash_sem);
+ mutex_unlock(&nwflash_mutex);
return written;
}
diff --git a/drivers/char/raw.c b/drivers/char/raw.c
index 30e4cbe16bb..15a7b408652 100644
--- a/drivers/char/raw.c
+++ b/drivers/char/raw.c
@@ -19,6 +19,7 @@
#include <linux/uio.h>
#include <linux/cdev.h>
#include <linux/device.h>
+#include <linux/mutex.h>
#include <asm/uaccess.h>
@@ -29,7 +30,7 @@ struct raw_device_data {
static struct class *raw_class;
static struct raw_device_data raw_devices[MAX_RAW_MINORS];
-static DECLARE_MUTEX(raw_mutex);
+static DEFINE_MUTEX(raw_mutex);
static struct file_operations raw_ctl_fops; /* forward declaration */
/*
@@ -53,7 +54,7 @@ static int raw_open(struct inode *inode, struct file *filp)
return 0;
}
- down(&raw_mutex);
+ mutex_lock(&raw_mutex);
/*
* All we need to do on open is check that the device is bound.
@@ -78,7 +79,7 @@ static int raw_open(struct inode *inode, struct file *filp)
filp->f_dentry->d_inode->i_mapping =
bdev->bd_inode->i_mapping;
filp->private_data = bdev;
- up(&raw_mutex);
+ mutex_unlock(&raw_mutex);
return 0;
out2:
@@ -86,7 +87,7 @@ out2:
out1:
blkdev_put(bdev);
out:
- up(&raw_mutex);
+ mutex_unlock(&raw_mutex);
return err;
}
@@ -99,14 +100,14 @@ static int raw_release(struct inode *inode, struct file *filp)
const int minor= iminor(inode);
struct block_device *bdev;
- down(&raw_mutex);
+ mutex_lock(&raw_mutex);
bdev = raw_devices[minor].binding;
if (--raw_devices[minor].inuse == 0) {
/* Here inode->i_mapping == bdev->bd_inode->i_mapping */
inode->i_mapping = &inode->i_data;
inode->i_mapping->backing_dev_info = &default_backing_dev_info;
}
- up(&raw_mutex);
+ mutex_unlock(&raw_mutex);
bd_release(bdev);
blkdev_put(bdev);
@@ -187,9 +188,9 @@ static int raw_ctl_ioctl(struct inode *inode, struct file *filp,
goto out;
}
- down(&raw_mutex);
+ mutex_lock(&raw_mutex);
if (rawdev->inuse) {
- up(&raw_mutex);
+ mutex_unlock(&raw_mutex);
err = -EBUSY;
goto out;
}
@@ -211,11 +212,11 @@ static int raw_ctl_ioctl(struct inode *inode, struct file *filp,
bind_device(&rq);
}
}
- up(&raw_mutex);
+ mutex_unlock(&raw_mutex);
} else {
struct block_device *bdev;
- down(&raw_mutex);
+ mutex_lock(&raw_mutex);
bdev = rawdev->binding;
if (bdev) {
rq.block_major = MAJOR(bdev->bd_dev);
@@ -223,7 +224,7 @@ static int raw_ctl_ioctl(struct inode *inode, struct file *filp,
} else {
rq.block_major = rq.block_minor = 0;
}
- up(&raw_mutex);
+ mutex_unlock(&raw_mutex);
if (copy_to_user((void __user *)arg, &rq, sizeof(rq))) {
err = -EFAULT;
goto out;
diff --git a/drivers/char/ser_a2232.c b/drivers/char/ser_a2232.c
index fee68cc895f..510bd3e0e88 100644
--- a/drivers/char/ser_a2232.c
+++ b/drivers/char/ser_a2232.c
@@ -97,7 +97,7 @@
#include <asm/amigahw.h>
#include <linux/zorro.h>
#include <asm/irq.h>
-#include <asm/semaphore.h>
+#include <linux/mutex.h>
#include <linux/delay.h>
@@ -654,7 +654,7 @@ static void a2232_init_portstructs(void)
port->gs.closing_wait = 30 * HZ;
port->gs.rd = &a2232_real_driver;
#ifdef NEW_WRITE_LOCKING
- init_MUTEX(&(port->gs.port_write_sem));
+ init_MUTEX(&(port->gs.port_write_mutex));
#endif
init_waitqueue_head(&port->gs.open_wait);
init_waitqueue_head(&port->gs.close_wait);
diff --git a/drivers/char/snsc.c b/drivers/char/snsc.c
index 0e7d216e7eb..b543821d8cb 100644
--- a/drivers/char/snsc.c
+++ b/drivers/char/snsc.c
@@ -5,7 +5,7 @@
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
- * Copyright (C) 2004 Silicon Graphics, Inc. All rights reserved.
+ * Copyright (C) 2004, 2006 Silicon Graphics, Inc. All rights reserved.
*/
/*
@@ -77,7 +77,7 @@ scdrv_open(struct inode *inode, struct file *file)
scd = container_of(inode->i_cdev, struct sysctl_data_s, scd_cdev);
/* allocate memory for subchannel data */
- sd = kmalloc(sizeof (struct subch_data_s), GFP_KERNEL);
+ sd = kzalloc(sizeof (struct subch_data_s), GFP_KERNEL);
if (sd == NULL) {
printk("%s: couldn't allocate subchannel data\n",
__FUNCTION__);
@@ -85,7 +85,6 @@ scdrv_open(struct inode *inode, struct file *file)
}
/* initialize subch_data_s fields */
- memset(sd, 0, sizeof (struct subch_data_s));
sd->sd_nasid = scd->scd_nasid;
sd->sd_subch = ia64_sn_irtr_open(scd->scd_nasid);
@@ -394,7 +393,7 @@ scdrv_init(void)
sprintf(devnamep, "#%d", geo_slab(geoid));
/* allocate sysctl device data */
- scd = kmalloc(sizeof (struct sysctl_data_s),
+ scd = kzalloc(sizeof (struct sysctl_data_s),
GFP_KERNEL);
if (!scd) {
printk("%s: failed to allocate device info"
@@ -402,7 +401,6 @@ scdrv_init(void)
SYSCTL_BASENAME, devname);
continue;
}
- memset(scd, 0, sizeof (struct sysctl_data_s));
/* initialize sysctl device data fields */
scd->scd_nasid = cnodeid_to_nasid(cnode);
diff --git a/drivers/char/snsc_event.c b/drivers/char/snsc_event.c
index a4fa507eed9..e234d50e142 100644
--- a/drivers/char/snsc_event.c
+++ b/drivers/char/snsc_event.c
@@ -287,7 +287,7 @@ scdrv_event_init(struct sysctl_data_s *scd)
{
int rv;
- event_sd = kmalloc(sizeof (struct subch_data_s), GFP_KERNEL);
+ event_sd = kzalloc(sizeof (struct subch_data_s), GFP_KERNEL);
if (event_sd == NULL) {
printk(KERN_WARNING "%s: couldn't allocate subchannel info"
" for event monitoring\n", __FUNCTION__);
@@ -295,7 +295,6 @@ scdrv_event_init(struct sysctl_data_s *scd)
}
/* initialize subch_data_s fields */
- memset(event_sd, 0, sizeof (struct subch_data_s));
event_sd->sd_nasid = scd->scd_nasid;
spin_lock_init(&event_sd->sd_rlock);
@@ -321,5 +320,3 @@ scdrv_event_init(struct sysctl_data_s *scd)
return;
}
}
-
-
diff --git a/drivers/char/stallion.c b/drivers/char/stallion.c
index bdaab699210..3f5d6077f39 100644
--- a/drivers/char/stallion.c
+++ b/drivers/char/stallion.c
@@ -148,7 +148,6 @@ static struct tty_driver *stl_serial;
* is already swapping a shared buffer won't make things any worse.
*/
static char *stl_tmpwritebuf;
-static DECLARE_MUTEX(stl_tmpwritesem);
/*
* Define a local default termios struct. All ports will be created
diff --git a/drivers/char/sx.c b/drivers/char/sx.c
index a6b4f02bdce..3b474723027 100644
--- a/drivers/char/sx.c
+++ b/drivers/char/sx.c
@@ -2318,7 +2318,7 @@ static int sx_init_portstructs (int nboards, int nports)
port->board = board;
port->gs.rd = &sx_real_driver;
#ifdef NEW_WRITE_LOCKING
- port->gs.port_write_sem = MUTEX;
+ port->gs.port_write_mutex = MUTEX;
#endif
port->gs.driver_lock = SPIN_LOCK_UNLOCKED;
/*
diff --git a/drivers/char/tty_io.c b/drivers/char/tty_io.c
index 53d3d066554..76592ee1fb3 100644
--- a/drivers/char/tty_io.c
+++ b/drivers/char/tty_io.c
@@ -130,7 +130,7 @@ LIST_HEAD(tty_drivers); /* linked list of tty drivers */
/* Semaphore to protect creating and releasing a tty. This is shared with
vt.c for deeply disgusting hack reasons */
-DECLARE_MUTEX(tty_sem);
+DEFINE_MUTEX(tty_mutex);
#ifdef CONFIG_UNIX98_PTYS
extern struct tty_driver *ptm_driver; /* Unix98 pty masters; for /dev/ptmx */
@@ -1188,11 +1188,11 @@ void disassociate_ctty(int on_exit)
lock_kernel();
- down(&tty_sem);
+ mutex_lock(&tty_mutex);
tty = current->signal->tty;
if (tty) {
tty_pgrp = tty->pgrp;
- up(&tty_sem);
+ mutex_unlock(&tty_mutex);
if (on_exit && tty->driver->type != TTY_DRIVER_TYPE_PTY)
tty_vhangup(tty);
} else {
@@ -1200,7 +1200,7 @@ void disassociate_ctty(int on_exit)
kill_pg(current->signal->tty_old_pgrp, SIGHUP, on_exit);
kill_pg(current->signal->tty_old_pgrp, SIGCONT, on_exit);
}
- up(&tty_sem);
+ mutex_unlock(&tty_mutex);
unlock_kernel();
return;
}
@@ -1211,7 +1211,7 @@ void disassociate_ctty(int on_exit)
}
/* Must lock changes to tty_old_pgrp */
- down(&tty_sem);
+ mutex_lock(&tty_mutex);
current->signal->tty_old_pgrp = 0;
tty->session = 0;
tty->pgrp = -1;
@@ -1222,7 +1222,7 @@ void disassociate_ctty(int on_exit)
p->signal->tty = NULL;
} while_each_task_pid(current->signal->session, PIDTYPE_SID, p);
read_unlock(&tasklist_lock);
- up(&tty_sem);
+ mutex_unlock(&tty_mutex);
unlock_kernel();
}
@@ -1306,7 +1306,7 @@ static inline ssize_t do_tty_write(
ssize_t ret = 0, written = 0;
unsigned int chunk;
- if (down_interruptible(&tty->atomic_write)) {
+ if (mutex_lock_interruptible(&tty->atomic_write_lock)) {
return -ERESTARTSYS;
}
@@ -1329,7 +1329,7 @@ static inline ssize_t do_tty_write(
if (count < chunk)
chunk = count;
- /* write_buf/write_cnt is protected by the atomic_write semaphore */
+ /* write_buf/write_cnt is protected by the atomic_write_lock mutex */
if (tty->write_cnt < chunk) {
unsigned char *buf;
@@ -1338,7 +1338,7 @@ static inline ssize_t do_tty_write(
buf = kmalloc(chunk, GFP_KERNEL);
if (!buf) {
- up(&tty->atomic_write);
+ mutex_unlock(&tty->atomic_write_lock);
return -ENOMEM;
}
kfree(tty->write_buf);
@@ -1374,7 +1374,7 @@ static inline ssize_t do_tty_write(
inode->i_mtime = current_fs_time(inode->i_sb);
ret = written;
}
- up(&tty->atomic_write);
+ mutex_unlock(&tty->atomic_write_lock);
return ret;
}
@@ -1442,8 +1442,8 @@ static inline void tty_line_name(struct tty_driver *driver, int index, char *p)
/*
* WSH 06/09/97: Rewritten to remove races and properly clean up after a
- * failed open. The new code protects the open with a semaphore, so it's
- * really quite straightforward. The semaphore locking can probably be
+ * failed open. The new code protects the open with a mutex, so it's
+ * really quite straightforward. The mutex locking can probably be
* relaxed for the (most common) case of reopening a tty.
*/
static int init_dev(struct tty_driver *driver, int idx,
@@ -1640,7 +1640,7 @@ fast_track:
success:
*ret_tty = tty;
- /* All paths come through here to release the semaphore */
+ /* All paths come through here to release the mutex */
end_init:
return retval;
@@ -1837,7 +1837,7 @@ static void release_dev(struct file * filp)
/* Guard against races with tty->count changes elsewhere and
opens on /dev/tty */
- down(&tty_sem);
+ mutex_lock(&tty_mutex);
tty_closing = tty->count <= 1;
o_tty_closing = o_tty &&
(o_tty->count <= (pty_master ? 1 : 0));
@@ -1868,7 +1868,7 @@ static void release_dev(struct file * filp)
printk(KERN_WARNING "release_dev: %s: read/write wait queue "
"active!\n", tty_name(tty, buf));
- up(&tty_sem);
+ mutex_unlock(&tty_mutex);
schedule();
}
@@ -1934,7 +1934,7 @@ static void release_dev(struct file * filp)
read_unlock(&tasklist_lock);
}
- up(&tty_sem);
+ mutex_unlock(&tty_mutex);
/* check whether both sides are closing ... */
if (!tty_closing || (o_tty && !o_tty_closing))
@@ -2040,11 +2040,11 @@ retry_open:
index = -1;
retval = 0;
- down(&tty_sem);
+ mutex_lock(&tty_mutex);
if (device == MKDEV(TTYAUX_MAJOR,0)) {
if (!current->signal->tty) {
- up(&tty_sem);
+ mutex_unlock(&tty_mutex);
return -ENXIO;
}
driver = current->signal->tty->driver;
@@ -2070,18 +2070,18 @@ retry_open:
noctty = 1;
goto got_driver;
}
- up(&tty_sem);
+ mutex_unlock(&tty_mutex);
return -ENODEV;
}
driver = get_tty_driver(device, &index);
if (!driver) {
- up(&tty_sem);
+ mutex_unlock(&tty_mutex);
return -ENODEV;
}
got_driver:
retval = init_dev(driver, index, &tty);
- up(&tty_sem);
+ mutex_unlock(&tty_mutex);
if (retval)
return retval;
@@ -2167,9 +2167,9 @@ static int ptmx_open(struct inode * inode, struct file * filp)
}
up(&allocated_ptys_lock);
- down(&tty_sem);
+ mutex_lock(&tty_mutex);
retval = init_dev(ptm_driver, index, &tty);
- up(&tty_sem);
+ mutex_unlock(&tty_mutex);
if (retval)
goto out;
@@ -2915,8 +2915,8 @@ static void initialize_tty_struct(struct tty_struct *tty)
init_waitqueue_head(&tty->write_wait);
init_waitqueue_head(&tty->read_wait);
INIT_WORK(&tty->hangup_work, do_tty_hangup, tty);
- sema_init(&tty->atomic_read, 1);
- sema_init(&tty->atomic_write, 1);
+ mutex_init(&tty->atomic_read_lock);
+ mutex_init(&tty->atomic_write_lock);
spin_lock_init(&tty->read_lock);
INIT_LIST_HEAD(&tty->tty_files);
INIT_WORK(&tty->SAK_work, NULL, NULL);
diff --git a/drivers/char/vme_scc.c b/drivers/char/vme_scc.c
index d9325281e48..fd00822ac14 100644
--- a/drivers/char/vme_scc.c
+++ b/drivers/char/vme_scc.c
@@ -184,7 +184,7 @@ static void scc_init_portstructs(void)
port->gs.closing_wait = 30 * HZ;
port->gs.rd = &scc_real_driver;
#ifdef NEW_WRITE_LOCKING
- port->gs.port_write_sem = MUTEX;
+ port->gs.port_write_mutex = MUTEX;
#endif
init_waitqueue_head(&port->gs.open_wait);
init_waitqueue_head(&port->gs.close_wait);
diff --git a/drivers/char/vt.c b/drivers/char/vt.c
index 0900d1dbee5..ca4844c527d 100644
--- a/drivers/char/vt.c
+++ b/drivers/char/vt.c
@@ -2489,7 +2489,7 @@ static int con_open(struct tty_struct *tty, struct file *filp)
}
/*
- * We take tty_sem in here to prevent another thread from coming in via init_dev
+ * We take tty_mutex in here to prevent another thread from coming in via init_dev
* and taking a ref against the tty while we're in the process of forgetting
* about it and cleaning things up.
*
@@ -2497,7 +2497,7 @@ static int con_open(struct tty_struct *tty, struct file *filp)
*/
static void con_close(struct tty_struct *tty, struct file *filp)
{
- down(&tty_sem);
+ mutex_lock(&tty_mutex);
acquire_console_sem();
if (tty && tty->count == 1) {
struct vc_data *vc = tty->driver_data;
@@ -2507,15 +2507,15 @@ static void con_close(struct tty_struct *tty, struct file *filp)
tty->driver_data = NULL;
release_console_sem();
vcs_remove_devfs(tty);
- up(&tty_sem);
+ mutex_unlock(&tty_mutex);
/*
- * tty_sem is released, but we still hold BKL, so there is
+ * tty_mutex is released, but we still hold BKL, so there is
* still exclusion against init_dev()
*/
return;
}
release_console_sem();
- up(&tty_sem);
+ mutex_unlock(&tty_mutex);
}
static void vc_init(struct vc_data *vc, unsigned int rows,
@@ -2869,9 +2869,9 @@ void unblank_screen(void)
}
/*
- * We defer the timer blanking to work queue so it can take the console semaphore
+ * We defer the timer blanking to work queue so it can take the console mutex
* (console operations can still happen at irq time, but only from printk which
- * has the console semaphore. Not perfect yet, but better than no locking
+ * has the console mutex. Not perfect yet, but better than no locking
*/
static void blank_screen_t(unsigned long dummy)
{
@@ -3234,6 +3234,14 @@ void vcs_scr_writew(struct vc_data *vc, u16 val, u16 *org)
}
}
+int is_console_suspend_safe(void)
+{
+ /* It is unsafe to suspend devices while X has control of the
+ * hardware. Make sure we are running on a kernel-controlled console.
+ */
+ return vc_cons[fg_console].d->vc_mode == KD_TEXT;
+}
+
/*
* Visible symbols for modules
*/
diff --git a/drivers/char/watchdog/pcwd_usb.c b/drivers/char/watchdog/pcwd_usb.c
index 1533f56baa4..2700c5c45b8 100644
--- a/drivers/char/watchdog/pcwd_usb.c
+++ b/drivers/char/watchdog/pcwd_usb.c
@@ -42,6 +42,7 @@
#include <linux/completion.h>
#include <asm/uaccess.h>
#include <linux/usb.h>
+#include <linux/mutex.h>
#ifdef CONFIG_USB_DEBUG
@@ -143,7 +144,7 @@ struct usb_pcwd_private {
static struct usb_pcwd_private *usb_pcwd_device;
/* prevent races between open() and disconnect() */
-static DECLARE_MUTEX (disconnect_sem);
+static DEFINE_MUTEX(disconnect_mutex);
/* local function prototypes */
static int usb_pcwd_probe (struct usb_interface *interface, const struct usb_device_id *id);
@@ -723,7 +724,7 @@ static void usb_pcwd_disconnect(struct usb_interface *interface)
struct usb_pcwd_private *usb_pcwd;
/* prevent races with open() */
- down (&disconnect_sem);
+ mutex_lock(&disconnect_mutex);
usb_pcwd = usb_get_intfdata (interface);
usb_set_intfdata (interface, NULL);
@@ -749,7 +750,7 @@ static void usb_pcwd_disconnect(struct usb_interface *interface)
cards_found--;
- up (&disconnect_sem);
+ mutex_unlock(&disconnect_mutex);
printk(KERN_INFO PFX "USB PC Watchdog disconnected\n");
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-27 20:48:11 +0000