Mesa (7.11): i915g: don't try to check if a NULL buffer is busy.

[Stephane Marchesin]

Module: Mesa
Branch: 7.11
Commit: 8d9202c1622413e9cd721acc5f1c9ecd7cd47e5f
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=8d9202c1622413e9cd721acc5f1c9ecd7cd47e5f

Author: Stéphane Marchesin <marcheu at chromium.org>
Date:   Wed Jul 13 11:59:10 2011 -0700

i915g: don't try to check if a NULL buffer is busy.

---

 src/gallium/winsys/i915/drm/i915_drm_buffer.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/src/gallium/winsys/i915/drm/i915_drm_buffer.c b/src/gallium/winsys/i915/drm/i915_drm_buffer.c
index 89d8e89..ac66af3 100644
--- a/src/gallium/winsys/i915/drm/i915_drm_buffer.c
+++ b/src/gallium/winsys/i915/drm/i915_drm_buffer.c
@@ -218,6 +218,8 @@ i915_drm_buffer_is_busy(struct i915_winsys *iws,
                         struct i915_winsys_buffer *buffer)
 {
    struct i915_drm_buffer* i915_buffer = i915_drm_buffer(buffer);
+   if (!i915_buffer)
+      return FALSE;
    return drm_intel_bo_busy(i915_buffer->bo);
 }