USB: auerswald: Convert ccp->mutex in a mutex

The semaphore ccp->mutex is used as mutex, convert it to the mutex API

Signed-off-by: Matthias Kaehlcke <matthias@kaehlcke.net>
Cc: Wolfgang Mües <wolfgang@iksw-muees.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 26 insertions, 26 deletions

diff --git a/drivers/usb/misc/auerswald.c b/drivers/usb/misc/auerswald.c
index 46dfbac0f6f0..81d051ca2291 100644
--- a/drivers/usb/misc/auerswald.c
+++ b/drivers/usb/misc/auerswald.c
@@ -254,7 +254,7 @@ typedef struct
 /* character device context */
 typedef struct
 {
-        struct semaphore mutex;         /* protection in user context */
+        struct mutex mutex;             /* protection in user context */
         pauerswald_t auerdev;           /* context pointer of assigned device */
         auerbufctl_t bufctl;            /* controls the buffer chain */
         auerscon_t scontext;            /* service context */
@@ -1390,7 +1390,7 @@ static int auerchar_open (struct inode *inode, struct file *file)
         }
 
         /* Initialize device descriptor */
-        init_MUTEX( &ccp->mutex);
+        mutex_init(&ccp->mutex);
         mutex_init(&ccp->readmutex);
         auerbuf_init (&ccp->bufctl);
         ccp->scontext.id = AUH_UNASSIGNED;
@@ -1433,23 +1433,23 @@ static int auerchar_ioctl (struct inode *inode, struct file *file, unsigned int
         dbg ("ioctl");
 
         /* get the mutexes */
-        if (down_interruptible (&ccp->mutex)) {
+        if (mutex_lock_interruptible(&ccp->mutex)) {
                 return -ERESTARTSYS;
         }
         cp = ccp->auerdev;
         if (!cp) {
-                up (&ccp->mutex);
+                mutex_unlock(&ccp->mutex);
                 return -ENODEV;
         }
         if (mutex_lock_interruptible(&cp->mutex)) {
-                up(&ccp->mutex);
+                mutex_unlock(&ccp->mutex);
                 return -ERESTARTSYS;
         }
 
         /* Check for removal */
         if (!cp->usbdev) {
                 mutex_unlock(&cp->mutex);
-                up(&ccp->mutex);
+                mutex_unlock(&ccp->mutex);
                 return -ENODEV;
         }
 
@@ -1552,7 +1552,7 @@ static int auerchar_ioctl (struct inode *inode, struct file *file, unsigned int
         }
         /* release the mutexes */
         mutex_unlock(&cp->mutex);
-        up(&ccp->mutex);
+        mutex_unlock(&ccp->mutex);
         return ret;
 }
 
@@ -1575,18 +1575,18 @@ static ssize_t auerchar_read (struct file *file, char __user *buf, size_t count,
                 return 0;
 
         /* get the mutex */
-        if (down_interruptible (&ccp->mutex))
+        if (mutex_lock_interruptible(&ccp->mutex))
                 return -ERESTARTSYS;
 
         /* Can we expect to read something? */
         if (ccp->scontext.id == AUH_UNASSIGNED) {
-                up (&ccp->mutex);
+                mutex_unlock(&ccp->mutex);
                 return -EIO;
         }
 
         /* only one reader per device allowed */
         if (mutex_lock_interruptible(&ccp->readmutex)) {
-                up (&ccp->mutex);
+                mutex_unlock(&ccp->mutex);
                 return -ERESTARTSYS;
         }
 
@@ -1604,7 +1604,7 @@ doreadbuf:
                         if (copy_to_user (buf, bp->bufp+ccp->readoffset, count)) {
                                 dbg ("auerswald_read: copy_to_user failed");
                                 mutex_unlock(&ccp->readmutex);
-                                up (&ccp->mutex);
+                                mutex_unlock(&ccp->mutex);
                                 return -EFAULT;
                         }
                 }
@@ -1619,7 +1619,7 @@ doreadbuf:
                 /* return with number of bytes read */
                 if (count) {
                         mutex_unlock(&ccp->readmutex);
-                        up (&ccp->mutex);
+                        mutex_unlock(&ccp->mutex);
                         return count;
                 }
         }
@@ -1656,12 +1656,12 @@ doreadlist:
                 set_current_state (TASK_RUNNING);
                 remove_wait_queue (&ccp->readwait, &wait);
                 mutex_unlock(&ccp->readmutex);
-                up (&ccp->mutex);
+                mutex_unlock(&ccp->mutex);
                 return -EAGAIN;  /* nonblocking, no data available */
         }
 
         /* yes, we should wait! */
-        up (&ccp->mutex); /* allow other operations while we wait */
+        mutex_unlock(&ccp->mutex); /* allow other operations while we wait */
         schedule();
         remove_wait_queue (&ccp->readwait, &wait);
         if (signal_pending (current)) {
@@ -1676,7 +1676,7 @@ doreadlist:
                 return -EIO;
         }
 
-        if (down_interruptible (&ccp->mutex)) {
+        if (mutex_lock_interruptible(&ccp->mutex)) {
                 mutex_unlock(&ccp->readmutex);
                 return -ERESTARTSYS;
         }
@@ -1708,27 +1708,27 @@ static ssize_t auerchar_write (struct file *file, const char __user *buf, size_t
 
 write_again:
         /* get the mutex */
-        if (down_interruptible (&ccp->mutex))
+        if (mutex_lock_interruptible(&ccp->mutex))
                 return -ERESTARTSYS;
 
         /* Can we expect to write something? */
         if (ccp->scontext.id == AUH_UNASSIGNED) {
-                up (&ccp->mutex);
+                mutex_unlock(&ccp->mutex);
                 return -EIO;
         }
 
         cp = ccp->auerdev;
         if (!cp) {
-                up (&ccp->mutex);
+                mutex_unlock(&ccp->mutex);
                 return -ERESTARTSYS;
         }
         if (mutex_lock_interruptible(&cp->mutex)) {
-                up (&ccp->mutex);
+                mutex_unlock(&ccp->mutex);
                 return -ERESTARTSYS;
         }
         if (!cp->usbdev) {
                 mutex_unlock(&cp->mutex);
-                up (&ccp->mutex);
+                mutex_unlock(&ccp->mutex);
                 return -EIO;
         }
         /* Prepare for sleep */
@@ -1752,7 +1752,7 @@ write_again:
         /* are there any buffers left? */
         if (!bp) {
                 mutex_unlock(&cp->mutex);
-                up (&ccp->mutex);
+                mutex_unlock(&ccp->mutex);
 
                 /* NONBLOCK: don't wait */
                 if (file->f_flags & O_NONBLOCK) {
@@ -1785,7 +1785,7 @@ write_again:
                 /* Wake up all processes waiting for a buffer */
                 wake_up (&cp->bufferwait);
                 mutex_unlock(&cp->mutex);
-                up (&ccp->mutex);
+                mutex_unlock(&ccp->mutex);
                 return -EFAULT;
         }
 
@@ -1810,12 +1810,12 @@ write_again:
                 auerbuf_releasebuf (bp);
                 /* Wake up all processes waiting for a buffer */
                 wake_up (&cp->bufferwait);
-                up (&ccp->mutex);
+                mutex_unlock(&ccp->mutex);
                 return -EIO;
         }
         else {
                 dbg ("auerchar_write: Write OK");
-                up (&ccp->mutex);
+                mutex_unlock(&ccp->mutex);
                 return len;
         }
 }
@@ -1828,7 +1828,7 @@ static int auerchar_release (struct inode *inode, struct file *file)
         pauerswald_t cp;
         dbg("release");
 
-        down(&ccp->mutex);
+        mutex_lock(&ccp->mutex);
         cp = ccp->auerdev;
         if (cp) {
                 mutex_lock(&cp->mutex);
@@ -1845,7 +1845,7 @@ static int auerchar_release (struct inode *inode, struct file *file)
                 cp = NULL;
                 ccp->auerdev = NULL;
         }
-        up (&ccp->mutex);
+        mutex_unlock(&ccp->mutex);
         auerchar_delete (ccp);
 
         return 0;