Auto-update from upstream

1 files changed, 86 insertions, 83 deletions

diff --git a/drivers/char/drm/drm_irq.c b/drivers/char/drm/drm_irq.c
index cdd4aec..b0d4b23 100644
--- a/drivers/char/drm/drm_irq.c
+++ b/drivers/char/drm/drm_irq.c
@@ -1,5 +1,5 @@
 /**
- * \file drm_irq.h 
+ * \file drm_irq.c
  * IRQ support
  *
  * \author Rickard E. (Rik) Faith <faith@valinux.com>
@@ -39,19 +39,19 @@
 
 /**
  * Get interrupt from bus id.
- * 
+ *
  * \param inode device inode.
  * \param filp file pointer.
  * \param cmd command.
  * \param arg user argument, pointing to a drm_irq_busid structure.
  * \return zero on success or a negative number on failure.
- * 
+ *
  * Finds the PCI device with the specified bus id and gets its IRQ number.
  * This IOCTL is deprecated, and will now return EINVAL for any busid not equal
  * to that of the device that this DRM instance attached to.
  */
 int drm_irq_by_busid(struct inode *inode, struct file *filp,
-		   unsigned int cmd, unsigned long arg)
+		     unsigned int cmd, unsigned long arg)
 {
 	drm_file_t *priv = filp->private_data;
 	drm_device_t *dev = priv->head->dev;
@@ -66,14 +66,12 @@ int drm_irq_by_busid(struct inode *inode, struct file *filp,
 
 	if ((p.busnum >> 8) != dev->pci_domain ||
 	    (p.busnum & 0xff) != dev->pci_bus ||
-	    p.devnum != dev->pci_slot ||
-	    p.funcnum != dev->pci_func)
+	    p.devnum != dev->pci_slot || p.funcnum != dev->pci_func)
 		return -EINVAL;
 
 	p.irq = dev->irq;
 
-	DRM_DEBUG("%d:%d:%d => IRQ %d\n",
-		  p.busnum, p.devnum, p.funcnum, p.irq);
+	DRM_DEBUG("%d:%d:%d => IRQ %d\n", p.busnum, p.devnum, p.funcnum, p.irq);
 	if (copy_to_user(argp, &p, sizeof(p)))
 		return -EFAULT;
 	return 0;
@@ -89,61 +87,61 @@ int drm_irq_by_busid(struct inode *inode, struct file *filp,
  * \c drm_driver_irq_preinstall() and \c drm_driver_irq_postinstall() functions
  * before and after the installation.
  */
-static int drm_irq_install( drm_device_t *dev )
+static int drm_irq_install(drm_device_t * dev)
 {
 	int ret;
-	unsigned long sh_flags=0;
+	unsigned long sh_flags = 0;
 
 	if (!drm_core_check_feature(dev, DRIVER_HAVE_IRQ))
 		return -EINVAL;
 
-	if ( dev->irq == 0 )
+	if (dev->irq == 0)
 		return -EINVAL;
 
-	down( &dev->struct_sem );
+	down(&dev->struct_sem);
 
 	/* Driver must have been initialized */
-	if ( !dev->dev_private ) {
-		up( &dev->struct_sem );
+	if (!dev->dev_private) {
+		up(&dev->struct_sem);
 		return -EINVAL;
 	}
 
-	if ( dev->irq_enabled ) {
-		up( &dev->struct_sem );
+	if (dev->irq_enabled) {
+		up(&dev->struct_sem);
 		return -EBUSY;
 	}
 	dev->irq_enabled = 1;
-	up( &dev->struct_sem );
+	up(&dev->struct_sem);
 
-	DRM_DEBUG( "%s: irq=%d\n", __FUNCTION__, dev->irq );
+	DRM_DEBUG("%s: irq=%d\n", __FUNCTION__, dev->irq);
 
 	if (drm_core_check_feature(dev, DRIVER_IRQ_VBL)) {
 		init_waitqueue_head(&dev->vbl_queue);
-		
-		spin_lock_init( &dev->vbl_lock );
-		
-		INIT_LIST_HEAD( &dev->vbl_sigs.head );
-		
+
+		spin_lock_init(&dev->vbl_lock);
+
+		INIT_LIST_HEAD(&dev->vbl_sigs.head);
+
 		dev->vbl_pending = 0;
 	}
 
-				/* Before installing handler */
+	/* Before installing handler */
 	dev->driver->irq_preinstall(dev);
 
-				/* Install handler */
+	/* Install handler */
 	if (drm_core_check_feature(dev, DRIVER_IRQ_SHARED))
 		sh_flags = SA_SHIRQ;
-	
-	ret = request_irq( dev->irq, dev->driver->irq_handler,
-			   sh_flags, dev->devname, dev );
-	if ( ret < 0 ) {
-		down( &dev->struct_sem );
+
+	ret = request_irq(dev->irq, dev->driver->irq_handler,
+			  sh_flags, dev->devname, dev);
+	if (ret < 0) {
+		down(&dev->struct_sem);
 		dev->irq_enabled = 0;
-		up( &dev->struct_sem );
+		up(&dev->struct_sem);
 		return ret;
 	}
 
-				/* After installing handler */
+	/* After installing handler */
 	dev->driver->irq_postinstall(dev);
 
 	return 0;
@@ -156,29 +154,30 @@ static int drm_irq_install( drm_device_t *dev )
  *
  * Calls the driver's \c drm_driver_irq_uninstall() function, and stops the irq.
  */
-int drm_irq_uninstall( drm_device_t *dev )
+int drm_irq_uninstall(drm_device_t * dev)
 {
 	int irq_enabled;
 
 	if (!drm_core_check_feature(dev, DRIVER_HAVE_IRQ))
 		return -EINVAL;
 
-	down( &dev->struct_sem );
+	down(&dev->struct_sem);
 	irq_enabled = dev->irq_enabled;
 	dev->irq_enabled = 0;
-	up( &dev->struct_sem );
+	up(&dev->struct_sem);
 
-	if ( !irq_enabled )
+	if (!irq_enabled)
 		return -EINVAL;
 
-	DRM_DEBUG( "%s: irq=%d\n", __FUNCTION__, dev->irq );
+	DRM_DEBUG("%s: irq=%d\n", __FUNCTION__, dev->irq);
 
 	dev->driver->irq_uninstall(dev);
 
-	free_irq( dev->irq, dev );
+	free_irq(dev->irq, dev);
 
 	return 0;
 }
+
 EXPORT_SYMBOL(drm_irq_uninstall);
 
 /**
@@ -192,30 +191,30 @@ EXPORT_SYMBOL(drm_irq_uninstall);
  *
  * Calls irq_install() or irq_uninstall() according to \p arg.
  */
-int drm_control( struct inode *inode, struct file *filp,
-		  unsigned int cmd, unsigned long arg )
+int drm_control(struct inode *inode, struct file *filp,
+		unsigned int cmd, unsigned long arg)
 {
 	drm_file_t *priv = filp->private_data;
 	drm_device_t *dev = priv->head->dev;
 	drm_control_t ctl;
-	
+
 	/* if we haven't irq we fallback for compatibility reasons - this used to be a separate function in drm_dma.h */
 
-	if ( copy_from_user( &ctl, (drm_control_t __user *)arg, sizeof(ctl) ) )
+	if (copy_from_user(&ctl, (drm_control_t __user *) arg, sizeof(ctl)))
 		return -EFAULT;
 
-	switch ( ctl.func ) {
+	switch (ctl.func) {
 	case DRM_INST_HANDLER:
 		if (!drm_core_check_feature(dev, DRIVER_HAVE_IRQ))
 			return 0;
 		if (dev->if_version < DRM_IF_VERSION(1, 2) &&
 		    ctl.irq != dev->irq)
 			return -EINVAL;
-		return drm_irq_install( dev );
+		return drm_irq_install(dev);
 	case DRM_UNINST_HANDLER:
 		if (!drm_core_check_feature(dev, DRIVER_HAVE_IRQ))
 			return 0;
-		return drm_irq_uninstall( dev );
+		return drm_irq_uninstall(dev);
 	default:
 		return -EINVAL;
 	}
@@ -230,7 +229,7 @@ int drm_control( struct inode *inode, struct file *filp,
  * \param data user argument, pointing to a drm_wait_vblank structure.
  * \return zero on success or a negative number on failure.
  *
- * Verifies the IRQ is installed. 
+ * Verifies the IRQ is installed.
  *
  * If a signal is requested checks if this task has already scheduled the same signal
  * for the same vblank sequence number - nothing to be done in
@@ -240,7 +239,7 @@ int drm_control( struct inode *inode, struct file *filp,
  *
  * If a signal is not requested, then calls vblank_wait().
  */
-int drm_wait_vblank( DRM_IOCTL_ARGS )
+int drm_wait_vblank(DRM_IOCTL_ARGS)
 {
 	drm_file_t *priv = filp->private_data;
 	drm_device_t *dev = priv->head->dev;
@@ -256,11 +255,11 @@ int drm_wait_vblank( DRM_IOCTL_ARGS )
 	if (!dev->irq)
 		return -EINVAL;
 
-	DRM_COPY_FROM_USER_IOCTL( vblwait, argp, sizeof(vblwait) );
+	DRM_COPY_FROM_USER_IOCTL(vblwait, argp, sizeof(vblwait));
 
-	switch ( vblwait.request.type & ~_DRM_VBLANK_FLAGS_MASK ) {
+	switch (vblwait.request.type & ~_DRM_VBLANK_FLAGS_MASK) {
 	case _DRM_VBLANK_RELATIVE:
-		vblwait.request.sequence += atomic_read( &dev->vbl_received );
+		vblwait.request.sequence += atomic_read(&dev->vbl_received);
 		vblwait.request.type &= ~_DRM_VBLANK_RELATIVE;
 	case _DRM_VBLANK_ABSOLUTE:
 		break;
@@ -269,64 +268,68 @@ int drm_wait_vblank( DRM_IOCTL_ARGS )
 	}
 
 	flags = vblwait.request.type & _DRM_VBLANK_FLAGS_MASK;
-	
-	if ( flags & _DRM_VBLANK_SIGNAL ) {
+
+	if (flags & _DRM_VBLANK_SIGNAL) {
 		unsigned long irqflags;
 		drm_vbl_sig_t *vbl_sig;
-		
-		vblwait.reply.sequence = atomic_read( &dev->vbl_received );
 
-		spin_lock_irqsave( &dev->vbl_lock, irqflags );
+		vblwait.reply.sequence = atomic_read(&dev->vbl_received);
+
+		spin_lock_irqsave(&dev->vbl_lock, irqflags);
 
 		/* Check if this task has already scheduled the same signal
 		 * for the same vblank sequence number; nothing to be done in
 		 * that case
 		 */
-		list_for_each_entry( vbl_sig, &dev->vbl_sigs.head, head ) {
+		list_for_each_entry(vbl_sig, &dev->vbl_sigs.head, head) {
 			if (vbl_sig->sequence == vblwait.request.sequence
 			    && vbl_sig->info.si_signo == vblwait.request.signal
-			    && vbl_sig->task == current)
-			{
-				spin_unlock_irqrestore( &dev->vbl_lock, irqflags );
+			    && vbl_sig->task == current) {
+				spin_unlock_irqrestore(&dev->vbl_lock,
+						       irqflags);
 				goto done;
 			}
 		}
 
-		if ( dev->vbl_pending >= 100 ) {
-			spin_unlock_irqrestore( &dev->vbl_lock, irqflags );
+		if (dev->vbl_pending >= 100) {
+			spin_unlock_irqrestore(&dev->vbl_lock, irqflags);
 			return -EBUSY;
 		}
 
 		dev->vbl_pending++;
 
-		spin_unlock_irqrestore( &dev->vbl_lock, irqflags );
+		spin_unlock_irqrestore(&dev->vbl_lock, irqflags);
 
-		if ( !( vbl_sig = drm_alloc( sizeof( drm_vbl_sig_t ), DRM_MEM_DRIVER ) ) ) {
+		if (!
+		    (vbl_sig =
+		     drm_alloc(sizeof(drm_vbl_sig_t), DRM_MEM_DRIVER))) {
 			return -ENOMEM;
 		}
 
-		memset( (void *)vbl_sig, 0, sizeof(*vbl_sig) );
+		memset((void *)vbl_sig, 0, sizeof(*vbl_sig));
 
 		vbl_sig->sequence = vblwait.request.sequence;
 		vbl_sig->info.si_signo = vblwait.request.signal;
 		vbl_sig->task = current;
 
-		spin_lock_irqsave( &dev->vbl_lock, irqflags );
+		spin_lock_irqsave(&dev->vbl_lock, irqflags);
 
-		list_add_tail( (struct list_head *) vbl_sig, &dev->vbl_sigs.head );
+		list_add_tail((struct list_head *)vbl_sig, &dev->vbl_sigs.head);
 
-		spin_unlock_irqrestore( &dev->vbl_lock, irqflags );
+		spin_unlock_irqrestore(&dev->vbl_lock, irqflags);
 	} else {
 		if (dev->driver->vblank_wait)
-			ret = dev->driver->vblank_wait( dev, &vblwait.request.sequence );
+			ret =
+			    dev->driver->vblank_wait(dev,
+						     &vblwait.request.sequence);
 
-		do_gettimeofday( &now );
+		do_gettimeofday(&now);
 		vblwait.reply.tval_sec = now.tv_sec;
 		vblwait.reply.tval_usec = now.tv_usec;
 	}
 
-done:
-	DRM_COPY_TO_USER_IOCTL( argp, vblwait, sizeof(vblwait) );
+      done:
+	DRM_COPY_TO_USER_IOCTL(argp, vblwait, sizeof(vblwait));
 
 	return ret;
 }
@@ -340,31 +343,31 @@ done:
  *
  * If a signal is not requested, then calls vblank_wait().
  */
-void drm_vbl_send_signals( drm_device_t *dev )
+void drm_vbl_send_signals(drm_device_t * dev)
 {
 	struct list_head *list, *tmp;
 	drm_vbl_sig_t *vbl_sig;
-	unsigned int vbl_seq = atomic_read( &dev->vbl_received );
+	unsigned int vbl_seq = atomic_read(&dev->vbl_received);
 	unsigned long flags;
 
-	spin_lock_irqsave( &dev->vbl_lock, flags );
+	spin_lock_irqsave(&dev->vbl_lock, flags);
 
-	list_for_each_safe( list, tmp, &dev->vbl_sigs.head ) {
-		vbl_sig = list_entry( list, drm_vbl_sig_t, head );
-		if ( ( vbl_seq - vbl_sig->sequence ) <= (1<<23) ) {
+	list_for_each_safe(list, tmp, &dev->vbl_sigs.head) {
+		vbl_sig = list_entry(list, drm_vbl_sig_t, head);
+		if ((vbl_seq - vbl_sig->sequence) <= (1 << 23)) {
 			vbl_sig->info.si_code = vbl_seq;
-			send_sig_info( vbl_sig->info.si_signo, &vbl_sig->info, vbl_sig->task );
+			send_sig_info(vbl_sig->info.si_signo, &vbl_sig->info,
+				      vbl_sig->task);
 
-			list_del( list );
+			list_del(list);
 
-			drm_free( vbl_sig, sizeof(*vbl_sig), DRM_MEM_DRIVER );
+			drm_free(vbl_sig, sizeof(*vbl_sig), DRM_MEM_DRIVER);
 
 			dev->vbl_pending--;
 		}
 	}
 
-	spin_unlock_irqrestore( &dev->vbl_lock, flags );
+	spin_unlock_irqrestore(&dev->vbl_lock, flags);
 }
-EXPORT_SYMBOL(drm_vbl_send_signals);
-
 
+EXPORT_SYMBOL(drm_vbl_send_signals);