From: Chris Wilson <chris@chris-wilson.co.uk>
Date: Tue, 8 Dec 2009 22:35:24 +0000 (+0000)
Subject: intel: Clear virtual after failing to mmap_gtt.
X-Git-Tag: submit/1.0/20121108.012404~340^2~13
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=08371bc29013370558728dcbeeed6a23ad2f5a70;p=profile%2Fivi%2Flibdrm.git

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 @@ int drm_intel_gem_bo_map_gtt(drm_intel_bo *bo)
 					   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",