#include <linux/spinlock.h>
#include <linux/smp_lock.h>
#include <linux/ac97_codec.h>
-#include <linux/mutex.h>
-
#include <asm/io.h>
#include <asm/dma.h>
#include <asm/uaccess.h>
unsigned short extended_status;
spinlock_t lock;
- struct mutex open_mutex;
+ struct semaphore open_sem;
mode_t open_mode;
wait_queue_head_t open_wait;
file->private_data = s;
/* wait for device to become free */
- mutex_lock(&s->open_mutex);
+ down(&s->open_sem);
while (s->open_mode & file->f_mode) {
if (file->f_flags & O_NONBLOCK) {
- mutex_unlock(&s->open_mutex);
+ up(&s->open_sem);
return -EBUSY;
}
add_wait_queue(&s->open_wait, &wait);
__set_current_state(TASK_INTERRUPTIBLE);
- mutex_unlock(&s->open_mutex);
+ up(&s->open_sem);
schedule();
remove_wait_queue(&s->open_wait, &wait);
set_current_state(TASK_RUNNING);
if (signal_pending(current))
return -ERESTARTSYS;
- mutex_lock(&s->open_mutex);
+ down(&s->open_sem);
}
spin_lock_irqsave(&s->lock, flags);
bailout:
spin_unlock_irqrestore(&s->lock, flags);
- mutex_unlock(&s->open_mutex);
+ up(&s->open_sem);
return ret;
}
lock_kernel();
if (file->f_mode & FMODE_WRITE)
drain_dac(s, file->f_flags & O_NONBLOCK);
- mutex_lock(&s->open_mutex);
+ down(&s->open_sem);
if (file->f_mode & FMODE_WRITE) {
stop_dac(s);
dealloc_dmabuf(s, &s->dma_dac);
dealloc_dmabuf(s, &s->dma_adc);
}
s->open_mode &= (~file->f_mode) & (FMODE_READ|FMODE_WRITE);
- mutex_unlock(&s->open_mutex);
+ up(&s->open_sem);
wake_up(&s->open_wait);
unlock_kernel();
return 0;
init_waitqueue_head(&s->dma_adc.wait);
init_waitqueue_head(&s->dma_dac.wait);
init_waitqueue_head(&s->open_wait);
- mutex_init(&s->open_mutex);
+ init_MUTEX(&s->open_sem);
spin_lock_init(&s->lock);
s->dev = pcidev;