Mesa (master): r600g: avoid segfault

[Jerome Glisse]

Module: Mesa
Branch: master
Commit: fa62cf7450595b3d99259b5a212df301ca711d4b
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=fa62cf7450595b3d99259b5a212df301ca711d4b

Author: Jerome Glisse <jglisse at redhat.com>
Date:   Tue Dec 21 10:49:53 2010 -0500

r600g: avoid segfault

Candidates 7.10

Signed-off-by: Jerome Glisse <jglisse at redhat.com>

---

 src/gallium/drivers/r600/evergreen_state.c |    2 +-
 src/gallium/drivers/r600/r600_state.c      |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/gallium/drivers/r600/evergreen_state.c b/src/gallium/drivers/r600/evergreen_state.c
index af19beb..8a69a10 100644
--- a/src/gallium/drivers/r600/evergreen_state.c
+++ b/src/gallium/drivers/r600/evergreen_state.c
@@ -1334,7 +1334,7 @@ void evergreen_vertex_buffer_update(struct r600_pipe_context *rctx)
 			rbuffer = (struct r600_resource*)vertex_buffer->buffer;
 			offset = 0;
 		}
-		if (vertex_buffer == NULL)
+		if (vertex_buffer == NULL || rbuffer == NULL)
 			continue;
 		offset += vertex_buffer->buffer_offset + r600_bo_offset(rbuffer->bo);
 
diff --git a/src/gallium/drivers/r600/r600_state.c b/src/gallium/drivers/r600/r600_state.c
index 0d76afd..9b099df 100644
--- a/src/gallium/drivers/r600/r600_state.c
+++ b/src/gallium/drivers/r600/r600_state.c
@@ -174,7 +174,7 @@ void r600_vertex_buffer_update(struct r600_pipe_context *rctx)
 			rbuffer = (struct r600_resource*)vertex_buffer->buffer;
 			offset = 0;
 		}
-		if (vertex_buffer == NULL)
+		if (vertex_buffer == NULL || rbuffer == NULL)
 			continue;
 		offset += vertex_buffer->buffer_offset + r600_bo_offset(rbuffer->bo);