[Freedreno] [PATCH] drm/msm/disp: check the return value of kzalloc()

[xkernel . wang]

From: Xiaoke Wang <xkernel.w...@foxmail.com>

kzalloc() is a memory allocation function which can return NULL when
some internal memory errors happen. So it is better to check it to
prevent potential wrong memory access.

Signed-off-by: Xiaoke Wang <xkernel.w...@foxmail.com>
---
 drivers/gpu/drm/msm/disp/msm_disp_snapshot_util.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/msm/disp/msm_disp_snapshot_util.c 
b/drivers/gpu/drm/msm/disp/msm_disp_snapshot_util.c
index cabe151..369e57f 100644
--- a/drivers/gpu/drm/msm/disp/msm_disp_snapshot_util.c
+++ b/drivers/gpu/drm/msm/disp/msm_disp_snapshot_util.c
@@ -169,6 +169,8 @@ void msm_disp_snapshot_add_block(struct msm_disp_state 
*disp_state, u32 len,
        va_list va;
 
        new_blk = kzalloc(sizeof(struct msm_disp_state_block), GFP_KERNEL);
+       if (!new_blk)
+               return;
 
        va_start(va, fmt);
 
--