diff options
| author | Jakob Bornecrantz <jakob@vmware.com> | 2013-10-30 02:46:56 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-12-04 10:57:05 -0800 |
| commit | f692d2d8bebddeb8c8faedfc41e4732f3dc23e5b (patch) | |
| tree | b8d656e6a7060b0483ffca2c4b04f0ad8eb1065b /drivers/gpu/drm | |
| parent | 4f94b6e4b43ca3a1027803bd3cab21e72bbb991e (diff) | |
drm/ttm: Handle in-memory region copies
commit 9a0599ddeae012a771bba5e23393fc52d8a59d89 upstream.
Fix the case where the ttm pointer may be NULL causing
a NULL pointer dereference.
Signed-off-by: Jakob Bornecrantz <jakob@vmware.com>
Signed-off-by: Thomas Hellström <thellstrom@vmware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/gpu/drm')
| -rw-r--r-- | drivers/gpu/drm/ttm/ttm_bo_util.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/gpu/drm/ttm/ttm_bo_util.c b/drivers/gpu/drm/ttm/ttm_bo_util.c index af894584dd9..068341ad1f5 100644 --- a/drivers/gpu/drm/ttm/ttm_bo_util.c +++ b/drivers/gpu/drm/ttm/ttm_bo_util.c @@ -347,7 +347,9 @@ int ttm_bo_move_memcpy(struct ttm_buffer_object *bo, if (old_iomap == NULL && ttm == NULL) goto out2; - if (ttm->state == tt_unpopulated) { + /* TTM might be null for moves within the same region. + */ + if (ttm && ttm->state == tt_unpopulated) { ret = ttm->bdev->driver->ttm_tt_populate(ttm); if (ret) { /* if we fail here don't nuke the mm node |