From 6b187bbd9f9bb86556037b13afac0b1ff43e8293 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Marek=20Ol=C5=A1=C3=A1k?= <marek.olsak@amd.com>
Date: Wed, 24 Feb 2016 23:45:33 +0100
Subject: [PATCH] gallium/radeon: disallow reallocation of shared buffers
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Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
---
 src/gallium/drivers/radeon/r600_buffer_common.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/gallium/drivers/radeon/r600_buffer_common.c b/src/gallium/drivers/radeon/r600_buffer_common.c
index 70c8eb2695e..33ba0fbca9b 100644
--- a/src/gallium/drivers/radeon/r600_buffer_common.c
+++ b/src/gallium/drivers/radeon/r600_buffer_common.c
@@ -213,6 +213,10 @@ static bool
 r600_invalidate_buffer(struct r600_common_context *rctx,
 		       struct r600_resource *rbuffer)
 {
+	/* Shared buffers can't be reallocated. */
+	if (rbuffer->is_shared)
+		return false;
+
 	/* In AMD_pinned_memory, the user pointer association only gets
 	 * broken when the buffer is explicitly re-allocated.
 	 */
-- 
2.30.2