- 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]));