1 files changed, 14 insertions, 12 deletions

diff --git a/sound/oss/maestro.c b/sound/oss/maestro.c
index d4b569acf764..e647f2f86279 100644
--- a/sound/oss/maestro.c
+++ b/sound/oss/maestro.c
@@ -223,6 +223,8 @@
 #include <linux/reboot.h>
 #include <linux/bitops.h>
 #include <linux/wait.h>
+#include <linux/mutex.h>
+
 
 #include <asm/current.h>
 #include <asm/dma.h>
@@ -397,7 +399,7 @@ struct ess_state {
         /* this locks around the oss state in the driver */
         spinlock_t lock;
         /* only let 1 be opening at a time */
-        struct semaphore open_sem;
+        struct mutex open_mutex;
         wait_queue_head_t open_wait;
         mode_t open_mode;
 
@@ -3020,26 +3022,26 @@ ess_open(struct inode *inode, struct file *file)
         VALIDATE_STATE(s);
         file->private_data = s;
         /* wait for device to become free */
-        down(&s->open_sem);
+        mutex_lock(&s->open_mutex);
         while (s->open_mode & file->f_mode) {
                 if (file->f_flags & O_NONBLOCK) {
-                        up(&s->open_sem);
+                        mutex_unlock(&s->open_mutex);
                         return -EWOULDBLOCK;
                 }
-                up(&s->open_sem);
+                mutex_unlock(&s->open_mutex);
                 interruptible_sleep_on(&s->open_wait);
                 if (signal_pending(current))
                         return -ERESTARTSYS;
-                down(&s->open_sem);
+                mutex_lock(&s->open_mutex);
         }
 
         /* under semaphore.. */
         if ((s->card->dmapages==NULL) && allocate_buffers(s)) {
-                up(&s->open_sem);
+                mutex_unlock(&s->open_mutex);
                 return -ENOMEM;
         }
 
-        /* we're covered by the open_sem */
+        /* we're covered by the open_mutex */
         if( ! s->card->dsps_open )  {
                 maestro_power(s->card,ACPI_D0);
                 start_bob(s);
@@ -3076,7 +3078,7 @@ ess_open(struct inode *inode, struct file *file)
         set_fmt(s, fmtm, fmts);
         s->open_mode |= file->f_mode & (FMODE_READ | FMODE_WRITE);
 
-        up(&s->open_sem);
+        mutex_unlock(&s->open_mutex);
         return nonseekable_open(inode, file);
 }
 
@@ -3089,7 +3091,7 @@ ess_release(struct inode *inode, struct file *file)
         lock_kernel();
         if (file->f_mode & FMODE_WRITE)
                 drain_dac(s, file->f_flags & O_NONBLOCK);
-        down(&s->open_sem);
+        mutex_lock(&s->open_mutex);
         if (file->f_mode & FMODE_WRITE) {
                 stop_dac(s);
         }
@@ -3098,7 +3100,7 @@ ess_release(struct inode *inode, struct file *file)
         }
                 
         s->open_mode &= (~file->f_mode) & (FMODE_READ|FMODE_WRITE);
-        /* we're covered by the open_sem */
+        /* we're covered by the open_mutex */
         M_printk("maestro: %d dsps now alive\n",s->card->dsps_open-1);
         if( --s->card->dsps_open <= 0) {
                 s->card->dsps_open = 0;
@@ -3106,7 +3108,7 @@ ess_release(struct inode *inode, struct file *file)
                 free_buffers(s);
                 maestro_power(s->card,ACPI_D2);
         }
-        up(&s->open_sem);
+        mutex_unlock(&s->open_mutex);
         wake_up(&s->open_wait);
         unlock_kernel();
         return 0;
@@ -3466,7 +3468,7 @@ maestro_probe(struct pci_dev *pcidev,const struct pci_device_id *pdid)
                 init_waitqueue_head(&s->dma_dac.wait);
                 init_waitqueue_head(&s->open_wait);
                 spin_lock_init(&s->lock);
-                init_MUTEX(&s->open_sem);
+                mutex_init(&s->open_mutex);
                 s->magic = ESS_STATE_MAGIC;
                 
                 s->apu[0] = 6*i;