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[PATCH] sem2mutex: drivers: raw, connector, dcdbas, ppp_generic

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Semaphore to mutex conversion.

The conversion was generated via scripts, and the result was validated
automatically via a script as well.

Signed-off-by: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Arjan van de Ven 2006-03-23 03:00:21 -08:00 committed by Linus Torvalds
parent 9cdf18279d
commit 8ed965d612
4 changed files with 45 additions and 41 deletions
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23
drivers/char/raw.c
View file

@ -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;

15
drivers/connector/connector.c
View file

@ -26,6 +26,7 @@
#include <linux/netlink.h>
#include <linux/moduleparam.h>
#include <linux/connector.h>
#include <linux/mutex.h>
#include <net/sock.h>
@ -41,7 +42,7 @@ module_param(cn_val, uint, 0);
MODULE_PARM_DESC(cn_idx, "Connector's main device idx.");
MODULE_PARM_DESC(cn_val, "Connector's main device val.");
static DECLARE_MUTEX(notify_lock);
static DEFINE_MUTEX(notify_lock);
static LIST_HEAD(notify_list);
static struct cn_dev cdev;
@ -260,7 +261,7 @@ static void cn_notify(struct cb_id *id, u32 notify_event)
{
struct cn_ctl_entry *ent;
down(&notify_lock);
mutex_lock(&notify_lock);
list_for_each_entry(ent, &notify_list, notify_entry) {
int i;
struct cn_notify_req *req;
@ -293,7 +294,7 @@ static void cn_notify(struct cb_id *id, u32 notify_event)
cn_netlink_send(&m, ctl->group, GFP_KERNEL);
}
}
up(&notify_lock);
mutex_unlock(&notify_lock);
}
/*
@ -407,14 +408,14 @@ static void cn_callback(void *data)
if (ctl->group == 0) {
struct cn_ctl_entry *n;
down(&notify_lock);
mutex_lock(&notify_lock);
list_for_each_entry_safe(ent, n, &notify_list, notify_entry) {
if (cn_ctl_msg_equals(ent->msg, ctl)) {
list_del(&ent->notify_entry);
kfree(ent);
}
}
up(&notify_lock);
mutex_unlock(&notify_lock);
return;
}
@ -429,9 +430,9 @@ static void cn_callback(void *data)
memcpy(ent->msg, ctl, size - sizeof(*ent));
down(&notify_lock);
mutex_lock(&notify_lock);
list_add(&ent->notify_entry, &notify_list);
up(&notify_lock);
mutex_unlock(&notify_lock);
}
static int __init cn_init(void)

23
drivers/firmware/dcdbas.c
View file

@ -33,6 +33,7 @@
#include <linux/spinlock.h>
#include <linux/string.h>
#include <linux/types.h>
#include <linux/mutex.h>
#include <asm/io.h>
#include <asm/semaphore.h>
@ -48,7 +49,7 @@ static u8 *smi_data_buf;
static dma_addr_t smi_data_buf_handle;
static unsigned long smi_data_buf_size;
static u32 smi_data_buf_phys_addr;
static DECLARE_MUTEX(smi_data_lock);
static DEFINE_MUTEX(smi_data_lock);
static unsigned int host_control_action;
static unsigned int host_control_smi_type;
@ -139,9 +140,9 @@ static ssize_t smi_data_buf_size_store(struct device *dev,
buf_size = simple_strtoul(buf, NULL, 10);
/* make sure SMI data buffer is at least buf_size */
down(&smi_data_lock);
mutex_lock(&smi_data_lock);
ret = smi_data_buf_realloc(buf_size);
up(&smi_data_lock);
mutex_unlock(&smi_data_lock);
if (ret)
return ret;
@ -154,7 +155,7 @@ static ssize_t smi_data_read(struct kobject *kobj, char *buf, loff_t pos,
size_t max_read;
ssize_t ret;
down(&smi_data_lock);
mutex_lock(&smi_data_lock);
if (pos >= smi_data_buf_size) {
ret = 0;
@ -165,7 +166,7 @@ static ssize_t smi_data_read(struct kobject *kobj, char *buf, loff_t pos,
ret = min(max_read, count);
memcpy(buf, smi_data_buf + pos, ret);
out:
up(&smi_data_lock);
mutex_unlock(&smi_data_lock);
return ret;
}
@ -174,7 +175,7 @@ static ssize_t smi_data_write(struct kobject *kobj, char *buf, loff_t pos,
{
ssize_t ret;
down(&smi_data_lock);
mutex_lock(&smi_data_lock);
ret = smi_data_buf_realloc(pos + count);
if (ret)
@ -183,7 +184,7 @@ static ssize_t smi_data_write(struct kobject *kobj, char *buf, loff_t pos,
memcpy(smi_data_buf + pos, buf, count);
ret = count;
out:
up(&smi_data_lock);
mutex_unlock(&smi_data_lock);
return ret;
}
@ -201,9 +202,9 @@ static ssize_t host_control_action_store(struct device *dev,
ssize_t ret;
/* make sure buffer is available for host control command */
down(&smi_data_lock);
mutex_lock(&smi_data_lock);
ret = smi_data_buf_realloc(sizeof(struct apm_cmd));
up(&smi_data_lock);
mutex_unlock(&smi_data_lock);
if (ret)
return ret;
@ -302,7 +303,7 @@ static ssize_t smi_request_store(struct device *dev,
unsigned long val = simple_strtoul(buf, NULL, 10);
ssize_t ret;
down(&smi_data_lock);
mutex_lock(&smi_data_lock);
if (smi_data_buf_size < sizeof(struct smi_cmd)) {
ret = -ENODEV;
@ -334,7 +335,7 @@ static ssize_t smi_request_store(struct device *dev,
}
out:
up(&smi_data_lock);
mutex_unlock(&smi_data_lock);
return ret;
}

25
drivers/net/ppp_generic.c
View file

@ -46,6 +46,7 @@
#include <linux/rwsem.h>
#include <linux/stddef.h>
#include <linux/device.h>
#include <linux/mutex.h>
#include <net/slhc_vj.h>
#include <asm/atomic.h>
@ -198,11 +199,11 @@ static unsigned int cardmap_find_first_free(struct cardmap *map);
static void cardmap_destroy(struct cardmap **map);
/*
* all_ppp_sem protects the all_ppp_units mapping.
* all_ppp_mutex protects the all_ppp_units mapping.
* It also ensures that finding a ppp unit in the all_ppp_units map
* and updating its file.refcnt field is atomic.
*/
static DECLARE_MUTEX(all_ppp_sem);
static DEFINE_MUTEX(all_ppp_mutex);
static struct cardmap *all_ppp_units;
static atomic_t ppp_unit_count = ATOMIC_INIT(0);
@ -804,7 +805,7 @@ static int ppp_unattached_ioctl(struct ppp_file *pf, struct file *file,
/* Attach to an existing ppp unit */
if (get_user(unit, p))
break;
down(&all_ppp_sem);
mutex_lock(&all_ppp_mutex);
err = -ENXIO;
ppp = ppp_find_unit(unit);
if (ppp != 0) {
@ -812,7 +813,7 @@ static int ppp_unattached_ioctl(struct ppp_file *pf, struct file *file,
file->private_data = &ppp->file;
err = 0;
}
up(&all_ppp_sem);
mutex_unlock(&all_ppp_mutex);
break;
case PPPIOCATTCHAN:
@ -2446,7 +2447,7 @@ ppp_create_interface(int unit, int *retp)
dev->do_ioctl = ppp_net_ioctl;
ret = -EEXIST;
down(&all_ppp_sem);
mutex_lock(&all_ppp_mutex);
if (unit < 0)
unit = cardmap_find_first_free(all_ppp_units);
else if (cardmap_get(all_ppp_units, unit) != NULL)
@ -2465,12 +2466,12 @@ ppp_create_interface(int unit, int *retp)
atomic_inc(&ppp_unit_count);
cardmap_set(&all_ppp_units, unit, ppp);
up(&all_ppp_sem);
mutex_unlock(&all_ppp_mutex);
*retp = 0;
return ppp;
out2:
up(&all_ppp_sem);
mutex_unlock(&all_ppp_mutex);
free_netdev(dev);
out1:
kfree(ppp);
@ -2500,7 +2501,7 @@ static void ppp_shutdown_interface(struct ppp *ppp)
{
struct net_device *dev;
down(&all_ppp_sem);
mutex_lock(&all_ppp_mutex);
ppp_lock(ppp);
dev = ppp->dev;
ppp->dev = NULL;
@ -2514,7 +2515,7 @@ static void ppp_shutdown_interface(struct ppp *ppp)
ppp->file.dead = 1;
ppp->owner = NULL;
wake_up_interruptible(&ppp->file.rwait);
up(&all_ppp_sem);
mutex_unlock(&all_ppp_mutex);
}
/*
@ -2556,7 +2557,7 @@ static void ppp_destroy_interface(struct ppp *ppp)
/*
* Locate an existing ppp unit.
* The caller should have locked the all_ppp_sem.
* The caller should have locked the all_ppp_mutex.
*/
static struct ppp *
ppp_find_unit(int unit)
@ -2601,7 +2602,7 @@ ppp_connect_channel(struct channel *pch, int unit)
int ret = -ENXIO;
int hdrlen;
down(&all_ppp_sem);
mutex_lock(&all_ppp_mutex);
ppp = ppp_find_unit(unit);
if (ppp == 0)
goto out;
@ -2626,7 +2627,7 @@ ppp_connect_channel(struct channel *pch, int unit)
outl:
write_unlock_bh(&pch->upl);
out:
up(&all_ppp_sem);
mutex_unlock(&all_ppp_mutex);
return ret;
}