Mesa (master): i965/miptree: Check for miptree_create() failures

[Topi Pohjolainen]

Module: Mesa
Branch: master
Commit: 2309363868aaf5821b748042e34b5c827e6cfb00
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=2309363868aaf5821b748042e34b5c827e6cfb00

Author: Topi Pohjolainen <topi.pohjolainen at intel.com>
Date:   Tue Jun 20 17:36:46 2017 +0300

i965/miptree: Check for miptree_create() failures

Rest of the function assumes it always succeeds.

Reviewed-by: Jason Ekstrand <jason at jlekstrand.net>
Signed-off-by: Topi Pohjolainen <topi.pohjolainen at intel.com>

---

 src/mesa/drivers/dri/i965/intel_mipmap_tree.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/mesa/drivers/dri/i965/intel_mipmap_tree.c b/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
index f48d834324..da454add98 100644
--- a/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
+++ b/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
@@ -889,6 +889,8 @@ intel_miptree_create(struct brw_context *brw,
                                      first_level, last_level,
                                      width0, height0, depth0, num_samples,
                                      layout_flags);
+   if (!mt)
+      return NULL;
 
    /* If the BO is too large to fit in the aperture, we need to use the
     * BLT engine to support it.  Prior to Sandybridge, the BLT paths can't