From: Dave Airlie <airlied@redhat.com>
Date: Mon, 4 Aug 2008 04:56:08 +0000 (+1000)
Subject: radeon: don't use ring if cp not going
X-Git-Tag: libdrm-2.4.3~16^2~105^2~5^2~31
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=29649ddedee6b07b922c99233b8afc7c3a1db66f;p=platform%2Fupstream%2Flibdrm.git

radeon: don't use ring if cp not going
---

diff --git a/linux-core/radeon_buffer.c b/linux-core/radeon_buffer.c
index e9ba11d..a4ac38c 100644
--- a/linux-core/radeon_buffer.c
+++ b/linux-core/radeon_buffer.c
@@ -55,10 +55,14 @@ int radeon_invalidate_caches(struct drm_device * dev, uint64_t flags)
 	drm_radeon_private_t *dev_priv = dev->dev_private;
 	RING_LOCALS;
 
+	if (!dev_priv->cp_running)
+		return 0;
+
 	BEGIN_RING(4);
 	RADEON_FLUSH_CACHE();
 	RADEON_FLUSH_ZCACHE();
 	ADVANCE_RING();
+	COMMIT_RING();
 	return 0;
 }