4.9-stable review patch. If anyone has any objections, please let me know.
------------------
From: Jordan Crouse <jcrouse@xxxxxxxxxxxxxx>
[ Upstream commit a6cb3b864b21b7345f824a4faa12b723c8aaf099 ]
For every submission buffer object one of MSM_SUBMIT_BO_WRITE
and MSM_SUBMIT_BO_READ must be set (and nothing else). If we
allowed zero then the buffer object would never get queued to
be unreferenced.
Signed-off-by: Jordan Crouse <jcrouse@xxxxxxxxxxxxxx>
Signed-off-by: Rob Clark <robdclark@xxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/msm/msm_gem_submit.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/gpu/drm/msm/msm_gem_submit.c
+++ b/drivers/gpu/drm/msm/msm_gem_submit.c
@@ -106,7 +106,8 @@ static int submit_lookup_objects(struct
pagefault_disable();
}
- if (submit_bo.flags & ~MSM_SUBMIT_BO_FLAGS) {
+ if ((submit_bo.flags & ~MSM_SUBMIT_BO_FLAGS) ||
+ !(submit_bo.flags & MSM_SUBMIT_BO_FLAGS)) {
DRM_ERROR("invalid flags: %x\n", submit_bo.flags);
ret = -EINVAL;
goto out_unlock;