intel: Clear virtual after failing to mmap_gtt.
Don't store the error return in bo_gem->gtt_virtual or else we will
attempt to use that as a valid pointer in future mappings.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
diff --git a/intel/intel_bufmgr_gem.c b/intel/intel_bufmgr_gem.c
index 5b76340..f3af3a9 100644
--- a/intel/intel_bufmgr_gem.c
+++ b/intel/intel_bufmgr_gem.c
@@ -950,6 +950,7 @@
MAP_SHARED, bufmgr_gem->fd,
mmap_arg.offset);
if (bo_gem->gtt_virtual == MAP_FAILED) {
+ bo_gem->gtt_virtual = NULL;
ret = -errno;
fprintf(stderr,
"%s:%d: Error mapping buffer %d (%s): %s .\n",