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Jonny Strom's mga_dma.c patch

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Keith Whitwell 2002-10-10 08:25:40 +00:00
parent 2af90a581d
commit 3d69766ea6
2 changed files with 20 additions and 2 deletions
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11
shared-core/mga_dma.c
View File

@ -157,9 +157,18 @@ void mga_do_dma_flush( drm_mga_private_t *dev_priv )
{
drm_mga_primary_buffer_t *primary = &dev_priv->prim;
u32 head, tail;
DMA_LOCALS;
u32 status = 0;
int i;
DMA_LOCALS;
DRM_DEBUG( "\n" );
/* We need to wait so that we can do an safe flush */
for ( i = 0 ; i < dev_priv->usec_timeout ; i++ ) {
status = MGA_READ( MGA_STATUS ) & MGA_ENGINE_IDLE_MASK;
if ( status == MGA_ENDPRDMASTS ) break;
udelay( 1 );
}
if ( primary->tail == primary->last_flush ) {
DRM_DEBUG( " bailing out...\n" );
return;

11
shared/mga_dma.c
View File

@ -157,9 +157,18 @@ void mga_do_dma_flush( drm_mga_private_t *dev_priv )
{
drm_mga_primary_buffer_t *primary = &dev_priv->prim;
u32 head, tail;
DMA_LOCALS;
u32 status = 0;
int i;
DMA_LOCALS;
DRM_DEBUG( "\n" );
/* We need to wait so that we can do an safe flush */
for ( i = 0 ; i < dev_priv->usec_timeout ; i++ ) {
status = MGA_READ( MGA_STATUS ) & MGA_ENGINE_IDLE_MASK;
if ( status == MGA_ENDPRDMASTS ) break;
udelay( 1 );
}
if ( primary->tail == primary->last_flush ) {
DRM_DEBUG( " bailing out...\n" );
return;