[FOR 2.6.18 FIX][PATCH] drm: radeon flush TCL VAP for vertex program enable/disable

[Dave Airlie <airlied@linux.ie>]

Can we get this into 2.6.18? it fixes a lockup condition in r200 vertex 
programs.

From: Roland Scheidegger <rscheidegger_lists@hispeed.ch>

The radeon requires a VAP state flush when enabling/disabling
vertex programs on the r200 cards.

Signed-off-by: Dave Airlie <airlied@linux.ie>
---
 drivers/char/drm/radeon_state.c |    9 ++++++++-
 1 files changed, 8 insertions(+), 1 deletions(-)

diff --git a/drivers/char/drm/radeon_state.c b/drivers/char/drm/radeon_state.c
index 5bb2234..5a08a23 100644
--- a/drivers/char/drm/radeon_state.c
+++ b/drivers/char/drm/radeon_state.c
@@ -175,6 +175,14 @@ static __inline__ int radeon_check_and_f
 		}
 		break;

+	case R200_EMIT_VAP_CTL:{
+			RING_LOCALS;
+			BEGIN_RING(2);
+			OUT_RING_REG(RADEON_SE_TCL_STATE_FLUSH, 0);
+			ADVANCE_RING();
+		}
+		break;
+
 	case RADEON_EMIT_RB3D_COLORPITCH:
 	case RADEON_EMIT_RE_LINE_PATTERN:
 	case RADEON_EMIT_SE_LINE_WIDTH:
@@ -202,7 +210,6 @@ static __inline__ int radeon_check_and_f
 	case R200_EMIT_TCL_LIGHT_MODEL_CTL_0:
 	case R200_EMIT_TFACTOR_0:
 	case R200_EMIT_VTX_FMT_0:
-	case R200_EMIT_VAP_CTL:
 	case R200_EMIT_MATRIX_SELECT_0:
 	case R200_EMIT_TEX_PROC_CTL_2:
 	case R200_EMIT_TCL_UCP_VERT_BLEND_CTL:
--
1.4.1.gd3ba6

-
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