An error while initializing the msm driver ends up calling
drm_atomic_helper_shutdown() without first initializing the funcs
in mode_config. While I'm not 100% sure this isn't a ordering
problem in msm adding a check to drm_mode_alloc seems like
a nice and safe solution.
Signed-off-by: Jordan Crouse <jcrouse@xxxxxxxxxxxxxx>
---
drivers/gpu/drm/drm_atomic.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c
index 5eb4013..1729428 100644
--- a/drivers/gpu/drm/drm_atomic.c
+++ b/drivers/gpu/drm/drm_atomic.c
@@ -114,6 +114,9 @@ drm_atomic_state_alloc(struct drm_device *dev)
{
struct drm_mode_config *config = &dev->mode_config;
+ if (!config->funcs)
+ return NULL;
+
if (!config->funcs->atomic_state_alloc) {
struct drm_atomic_state *state;
--
2.7.4
