diff options
Diffstat (limited to 'fs/sysfs')
-rw-r--r-- | fs/sysfs/file.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/fs/sysfs/file.c b/fs/sysfs/file.c index 3e1cc062a740..b21d11b46754 100644 --- a/fs/sysfs/file.c +++ b/fs/sysfs/file.c @@ -8,8 +8,8 @@ #include <linux/namei.h> #include <linux/poll.h> #include <linux/list.h> +#include <linux/mutex.h> #include <asm/uaccess.h> -#include <asm/semaphore.h> #include "sysfs.h" @@ -55,7 +55,7 @@ struct sysfs_buffer { loff_t pos; char * page; struct sysfs_ops * ops; - struct semaphore sem; + struct mutex mutex; int needs_read_fill; int event; }; @@ -128,7 +128,7 @@ sysfs_read_file(struct file *file, char __user *buf, size_t count, loff_t *ppos) struct sysfs_buffer * buffer = file->private_data; ssize_t retval = 0; - down(&buffer->sem); + mutex_lock(&buffer->mutex); if (buffer->needs_read_fill) { retval = fill_read_buffer(file->f_path.dentry,buffer); if (retval) @@ -139,7 +139,7 @@ sysfs_read_file(struct file *file, char __user *buf, size_t count, loff_t *ppos) retval = simple_read_from_buffer(buf, count, ppos, buffer->page, buffer->count); out: - up(&buffer->sem); + mutex_unlock(&buffer->mutex); return retval; } @@ -228,13 +228,13 @@ sysfs_write_file(struct file *file, const char __user *buf, size_t count, loff_t struct sysfs_buffer * buffer = file->private_data; ssize_t len; - down(&buffer->sem); + mutex_lock(&buffer->mutex); len = fill_write_buffer(buffer, buf, count); if (len > 0) len = flush_write_buffer(file->f_path.dentry, buffer, len); if (len > 0) *ppos += len; - up(&buffer->sem); + mutex_unlock(&buffer->mutex); return len; } @@ -294,7 +294,7 @@ static int sysfs_open_file(struct inode *inode, struct file *file) if (!buffer) goto err_out; - init_MUTEX(&buffer->sem); + mutex_init(&buffer->mutex); buffer->needs_read_fill = 1; buffer->ops = ops; file->private_data = buffer; |