diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/usb/misc/auerswald.c | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/drivers/usb/misc/auerswald.c b/drivers/usb/misc/auerswald.c index 498fd478992..46dfbac0f6f 100644 --- a/drivers/usb/misc/auerswald.c +++ b/drivers/usb/misc/auerswald.c @@ -259,7 +259,7 @@ typedef struct auerbufctl_t bufctl; /* controls the buffer chain */ auerscon_t scontext; /* service context */ wait_queue_head_t readwait; /* for synchronous reading */ - struct semaphore readmutex; /* protection against multiple reads */ + struct mutex readmutex; /* protection against multiple reads */ pauerbuf_t readbuf; /* buffer held for partial reading */ unsigned int readoffset; /* current offset in readbuf */ unsigned int removed; /* is != 0 if device is removed */ @@ -1391,7 +1391,7 @@ static int auerchar_open (struct inode *inode, struct file *file) /* Initialize device descriptor */ init_MUTEX( &ccp->mutex); - init_MUTEX( &ccp->readmutex); + mutex_init(&ccp->readmutex); auerbuf_init (&ccp->bufctl); ccp->scontext.id = AUH_UNASSIGNED; ccp->scontext.dispatch = auerchar_ctrlread_dispatch; @@ -1585,7 +1585,7 @@ static ssize_t auerchar_read (struct file *file, char __user *buf, size_t count, } /* only one reader per device allowed */ - if (down_interruptible (&ccp->readmutex)) { + if (mutex_lock_interruptible(&ccp->readmutex)) { up (&ccp->mutex); return -ERESTARTSYS; } @@ -1603,7 +1603,7 @@ doreadbuf: if (count) { if (copy_to_user (buf, bp->bufp+ccp->readoffset, count)) { dbg ("auerswald_read: copy_to_user failed"); - up (&ccp->readmutex); + mutex_unlock(&ccp->readmutex); up (&ccp->mutex); return -EFAULT; } @@ -1618,7 +1618,7 @@ doreadbuf: } /* return with number of bytes read */ if (count) { - up (&ccp->readmutex); + mutex_unlock(&ccp->readmutex); up (&ccp->mutex); return count; } @@ -1655,7 +1655,7 @@ doreadlist: dbg ("No read buffer available, returning -EAGAIN"); set_current_state (TASK_RUNNING); remove_wait_queue (&ccp->readwait, &wait); - up (&ccp->readmutex); + mutex_unlock(&ccp->readmutex); up (&ccp->mutex); return -EAGAIN; /* nonblocking, no data available */ } @@ -1666,18 +1666,18 @@ doreadlist: remove_wait_queue (&ccp->readwait, &wait); if (signal_pending (current)) { /* waked up by a signal */ - up (&ccp->readmutex); + mutex_unlock(&ccp->readmutex); return -ERESTARTSYS; } /* Anything left to read? */ if ((ccp->scontext.id == AUH_UNASSIGNED) || ccp->removed) { - up (&ccp->readmutex); + mutex_unlock(&ccp->readmutex); return -EIO; } if (down_interruptible (&ccp->mutex)) { - up (&ccp->readmutex); + mutex_unlock(&ccp->readmutex); return -ERESTARTSYS; } |