[PATCH] Gpu: drm: arm: - Fix possible dereference of NULL

[Shailendra Verma]

From: "Shailendra Verma" <shailendra.v at samsung.com>

There is possible dereference of NULL pointer if kmalloc fails,
When function returns.So return NULL if kmalloc fails.

Signed-off-by: Shailendra Verma <Shailendra.v at samsung.com>
---
 drivers/gpu/drm/arm/malidp_planes.c |    3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/arm/malidp_planes.c b/drivers/gpu/drm/arm/malidp_planes.c
index 82c193e..f769398 100644
--- a/drivers/gpu/drm/arm/malidp_planes.c
+++ b/drivers/gpu/drm/arm/malidp_planes.c
@@ -54,6 +54,9 @@ struct drm_plane_state *malidp_duplicate_plane_state(struct drm_plane *plane)
 		return NULL;
 
 	state = kmalloc(sizeof(*state), GFP_KERNEL);
+	if (!state)
+		return NULL;
+
 	if (state) {
 		m_state = to_malidp_plane_state(plane->state);
 		__drm_atomic_helper_plane_duplicate_state(plane, &state->base);
-- 
1.7.9.5