X-Git-Url: http://git.rot13.org/?a=blobdiff_plain;f=drivers%2Fchar%2Fdrm%2Fvia_video.c;h=300ac61b09edbacd68b92f7446b97a133349d203;hb=1465887cfe79889273e3fd3aaf862e7ec3ee244f;hp=37a61c67b2926abaa2254c8f6917e2a01fc44f27;hpb=e0d21d9cca25f424f3129649be48a63c128ed42d;p=powerpc.git

diff --git a/drivers/char/drm/via_video.c b/drivers/char/drm/via_video.c
index 37a61c67b2..300ac61b09 100644
--- a/drivers/char/drm/via_video.c
+++ b/drivers/char/drm/via_video.c
@@ -29,8 +29,7 @@
 #include "via_drm.h"
 #include "via_drv.h"
 
-void
-via_init_futex(drm_via_private_t *dev_priv)
+void via_init_futex(drm_via_private_t * dev_priv)
 {
 	unsigned int i;
 
@@ -42,30 +41,31 @@ via_init_futex(drm_via_private_t *dev_priv)
 	}
 }
 
-void
-via_cleanup_futex(drm_via_private_t *dev_priv)
+void via_cleanup_futex(drm_via_private_t * dev_priv)
 {
-}	
+}
 
-void
-via_release_futex(drm_via_private_t *dev_priv, int context)
+void via_release_futex(drm_via_private_t * dev_priv, int context)
 {
 	unsigned int i;
 	volatile int *lock;
 
-	for (i=0; i < VIA_NR_XVMC_LOCKS; ++i) {
-	        lock = (int *) XVMCLOCKPTR(dev_priv->sarea_priv, i);
-		if ( (_DRM_LOCKING_CONTEXT( *lock ) == context)) {
-			if (_DRM_LOCK_IS_HELD( *lock ) && (*lock & _DRM_LOCK_CONT)) {
-				DRM_WAKEUP( &(dev_priv->decoder_queue[i]));
+	if (!dev_priv->sarea_priv)
+		return;
+
+	for (i = 0; i < VIA_NR_XVMC_LOCKS; ++i) {
+		lock = (volatile int *)XVMCLOCKPTR(dev_priv->sarea_priv, i);
+		if ((_DRM_LOCKING_CONTEXT(*lock) == context)) {
+			if (_DRM_LOCK_IS_HELD(*lock)
+			    && (*lock & _DRM_LOCK_CONT)) {
+				DRM_WAKEUP(&(dev_priv->decoder_queue[i]));
 			}
 			*lock = 0;
 		}
-	}	
-}	
+	}
+}
 
-int 
-via_decoder_futex(DRM_IOCTL_ARGS)
+int via_decoder_futex(DRM_IOCTL_ARGS)
 {
 	DRM_DEVICE;
 	drm_via_futex_t fx;
@@ -76,12 +76,13 @@ via_decoder_futex(DRM_IOCTL_ARGS)
 
 	DRM_DEBUG("%s\n", __FUNCTION__);
 
-	DRM_COPY_FROM_USER_IOCTL(fx, (drm_via_futex_t *) data, sizeof(fx));
+	DRM_COPY_FROM_USER_IOCTL(fx, (drm_via_futex_t __user *) data,
+				 sizeof(fx));
 
 	if (fx.lock > VIA_NR_XVMC_LOCKS)
 		return -EFAULT;
 
-	lock = (int *)XVMCLOCKPTR(sAPriv, fx.lock);
+	lock = (volatile int *)XVMCLOCKPTR(sAPriv, fx.lock);
 
 	switch (fx.func) {
 	case VIA_FUTEX_WAIT:
@@ -94,4 +95,3 @@ via_decoder_futex(DRM_IOCTL_ARGS)
 	}
 	return 0;
 }
-