[PATCH] vc04_services: vchiq_arm: fix a NULL pointer dereference

[Kangjie Lu]

When kzalloc fails, "platform_state->inited = 1" is a NULL pointer
dereference. The fix returns VCHIQ_ERROR in case it failed to
avoid NULL pointer dereference.

Signed-off-by: Kangjie Lu <kjlu@xxxxxxx>
---
 .../staging/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c  | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c
index dd4898861b83..0f12fe617575 100644
--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c
+++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c
@@ -209,6 +209,8 @@ vchiq_platform_init_state(struct vchiq_state *state)
 	struct vchiq_2835_state *platform_state;
 
 	state->platform_state = kzalloc(sizeof(*platform_state), GFP_KERNEL);
+	if (!state->platform_state)
+		return VCHIQ_ERROR;
 	platform_state = (struct vchiq_2835_state *)state->platform_state;
 
 	platform_state->inited = 1;
-- 
2.17.1