diff options
| author | Ingo Molnar <mingo@kernel.org> | 2018-12-03 11:44:00 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2018-12-03 11:44:00 +0100 |
| commit | 989a4222c13a3e148772730d362fceb0727852f5 (patch) | |
| tree | c66538440a53713e8d3fc52db62e174c6966f831 /drivers/gpu/drm/drm_dp_mst_topology.c | |
| parent | e8da8794a7fd9eef1ec9a07f0d4897c68581c72b (diff) | |
| parent | 2595646791c319cadfdbf271563aac97d0843dc7 (diff) | |
Merge tag 'v4.20-rc5' into irq/core, to pick up fixes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'drivers/gpu/drm/drm_dp_mst_topology.c')
| -rw-r--r-- | drivers/gpu/drm/drm_dp_mst_topology.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c index 5ff1d79b86c4..0e0df398222d 100644 --- a/drivers/gpu/drm/drm_dp_mst_topology.c +++ b/drivers/gpu/drm/drm_dp_mst_topology.c @@ -1275,6 +1275,9 @@ static struct drm_dp_mst_branch *drm_dp_get_mst_branch_device(struct drm_dp_mst_ mutex_lock(&mgr->lock); mstb = mgr->mst_primary; + if (!mstb) + goto out; + for (i = 0; i < lct - 1; i++) { int shift = (i % 2) ? 0 : 4; int port_num = (rad[i / 2] >> shift) & 0xf; |