From: Alex Deucher <alexander.deuc...@amd.com>

It shouldn't be needed and older kernels don't support
it.

Fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=59945

Signed-off-by: Alex Deucher <alexander.deuc...@amd.com>
---
 src/gallium/drivers/r600/r600_hw_context.c |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/gallium/drivers/r600/r600_hw_context.c 
b/src/gallium/drivers/r600/r600_hw_context.c
index e13b502..310c19e 100644
--- a/src/gallium/drivers/r600/r600_hw_context.c
+++ b/src/gallium/drivers/r600/r600_hw_context.c
@@ -683,7 +683,8 @@ void r600_flush_emit(struct r600_context *rctx)
        }
        if (wait_until) {
                /* wait for things to settle */
-               r600_write_config_reg(cs, R_008040_WAIT_UNTIL, wait_until);
+               if (rctx->family < CHIP_CAYMAN)
+                       r600_write_config_reg(cs, R_008040_WAIT_UNTIL, 
wait_until);
        }
 
        /* everything is properly flushed */
@@ -862,7 +863,8 @@ void r600_context_emit_fence(struct r600_context *ctx, 
struct r600_resource *fen
        va = r600_resource_va(&ctx->screen->screen, (void*)fence_bo);
        va = va + (offset << 2);
 
-       r600_write_config_reg(cs, R_008040_WAIT_UNTIL, 
S_008040_WAIT_3D_IDLE(1));
+       if (ctx->family < CHIP_CAYMAN)
+               r600_write_config_reg(cs, R_008040_WAIT_UNTIL, 
S_008040_WAIT_3D_IDLE(1));
 
        cs->buf[cs->cdw++] = PKT3(PKT3_EVENT_WRITE_EOP, 4, 0);
        cs->buf[cs->cdw++] = 
EVENT_TYPE(EVENT_TYPE_CACHE_FLUSH_AND_INV_TS_EVENT) | EVENT_INDEX(5);
-- 
1.7.7.5

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