diff options
| -rw-r--r-- | arch/um/drivers/harddog_kern.c | 13 | ||||
| -rw-r--r-- | arch/um/drivers/hostaudio_kern.c | 12 | ||||
| -rw-r--r-- | arch/um/drivers/ubd_kern.c | 11 | ||||
| -rw-r--r-- | arch/um/kernel/exec.c | 2 |
4 files changed, 20 insertions, 18 deletions
diff --git a/arch/um/drivers/harddog_kern.c b/arch/um/drivers/harddog_kern.c index cfcac1ff4cf..86036276020 100644 --- a/arch/um/drivers/harddog_kern.c +++ b/arch/um/drivers/harddog_kern.c @@ -42,7 +42,7 @@ #include <linux/miscdevice.h> #include <linux/watchdog.h> #include <linux/reboot.h> -#include <linux/smp_lock.h> +#include <linux/mutex.h> #include <linux/init.h> #include <linux/spinlock.h> #include <asm/uaccess.h> @@ -50,6 +50,7 @@ MODULE_LICENSE("GPL"); +static DEFINE_MUTEX(harddog_mutex); static DEFINE_SPINLOCK(lock); static int timer_alive; static int harddog_in_fd = -1; @@ -66,7 +67,7 @@ static int harddog_open(struct inode *inode, struct file *file) int err = -EBUSY; char *sock = NULL; - lock_kernel(); + mutex_lock(&harddog_mutex); spin_lock(&lock); if(timer_alive) goto err; @@ -83,11 +84,11 @@ static int harddog_open(struct inode *inode, struct file *file) timer_alive = 1; spin_unlock(&lock); - unlock_kernel(); + mutex_unlock(&harddog_mutex); return nonseekable_open(inode, file); err: spin_unlock(&lock); - unlock_kernel(); + mutex_unlock(&harddog_mutex); return err; } @@ -153,9 +154,9 @@ static long harddog_ioctl(struct file *file, { long ret; - lock_kernel(); + mutex_lock(&harddog_mutex); ret = harddog_ioctl_unlocked(file, cmd, arg); - unlock_kernel(); + mutex_unlock(&harddog_mutex); return ret; } diff --git a/arch/um/drivers/hostaudio_kern.c b/arch/um/drivers/hostaudio_kern.c index 0c46e398cd8..d92ff6d6029 100644 --- a/arch/um/drivers/hostaudio_kern.c +++ b/arch/um/drivers/hostaudio_kern.c @@ -8,7 +8,7 @@ #include "linux/slab.h" #include "linux/sound.h" #include "linux/soundcard.h" -#include "linux/smp_lock.h" +#include "linux/mutex.h" #include "asm/uaccess.h" #include "init.h" #include "os.h" @@ -67,6 +67,8 @@ MODULE_PARM_DESC(mixer, MIXER_HELP); #endif +static DEFINE_MUTEX(hostaudio_mutex); + /* /dev/dsp file operations */ static ssize_t hostaudio_read(struct file *file, char __user *buffer, @@ -202,9 +204,9 @@ static int hostaudio_open(struct inode *inode, struct file *file) w = 1; kparam_block_sysfs_write(dsp); - lock_kernel(); + mutex_lock(&hostaudio_mutex); ret = os_open_file(dsp, of_set_rw(OPENFLAGS(), r, w), 0); - unlock_kernel(); + mutex_unlock(&hostaudio_mutex); kparam_unblock_sysfs_write(dsp); if (ret < 0) { @@ -263,9 +265,9 @@ static int hostmixer_open_mixdev(struct inode *inode, struct file *file) w = 1; kparam_block_sysfs_write(mixer); - lock_kernel(); + mutex_lock(&hostaudio_mutex); ret = os_open_file(mixer, of_set_rw(OPENFLAGS(), r, w), 0); - unlock_kernel(); + mutex_unlock(&hostaudio_mutex); kparam_unblock_sysfs_write(mixer); if (ret < 0) { diff --git a/arch/um/drivers/ubd_kern.c b/arch/um/drivers/ubd_kern.c index 1bcd208c459..0c053607ce9 100644 --- a/arch/um/drivers/ubd_kern.c +++ b/arch/um/drivers/ubd_kern.c @@ -33,7 +33,7 @@ #include "linux/mm.h" #include "linux/slab.h" #include "linux/vmalloc.h" -#include "linux/smp_lock.h" +#include "linux/mutex.h" #include "linux/blkpg.h" #include "linux/genhd.h" #include "linux/spinlock.h" @@ -100,6 +100,7 @@ static inline void ubd_set_bit(__u64 bit, unsigned char *data) #define DRIVER_NAME "uml-blkdev" static DEFINE_MUTEX(ubd_lock); +static DEFINE_MUTEX(ubd_mutex); /* replaces BKL, might not be needed */ static int ubd_open(struct block_device *bdev, fmode_t mode); static int ubd_release(struct gendisk *disk, fmode_t mode); @@ -1099,7 +1100,7 @@ static int ubd_open(struct block_device *bdev, fmode_t mode) struct ubd *ubd_dev = disk->private_data; int err = 0; - lock_kernel(); + mutex_lock(&ubd_mutex); if(ubd_dev->count == 0){ err = ubd_open_dev(ubd_dev); if(err){ @@ -1118,7 +1119,7 @@ static int ubd_open(struct block_device *bdev, fmode_t mode) err = -EROFS; }*/ out: - unlock_kernel(); + mutex_unlock(&ubd_mutex); return err; } @@ -1126,10 +1127,10 @@ static int ubd_release(struct gendisk *disk, fmode_t mode) { struct ubd *ubd_dev = disk->private_data; - lock_kernel(); + mutex_lock(&ubd_mutex); if(--ubd_dev->count == 0) ubd_close_dev(ubd_dev); - unlock_kernel(); + mutex_unlock(&ubd_mutex); return 0; } diff --git a/arch/um/kernel/exec.c b/arch/um/kernel/exec.c index cd145eda357..460ce86f401 100644 --- a/arch/um/kernel/exec.c +++ b/arch/um/kernel/exec.c @@ -78,13 +78,11 @@ long sys_execve(const char __user *file, char __user *__user *argv, long error; char *filename; - lock_kernel(); filename = getname(file); error = PTR_ERR(filename); if (IS_ERR(filename)) goto out; error = execve1(filename, argv, env); putname(filename); out: - unlock_kernel(); return error; } |