[PATCH 35/45] drm/amd/display: Add NULL pointer check for kzalloc

[Tom Chung]

From: Hersen Wu <hersenxs...@amd.com>

[Why & How]
Check return pointer of kzalloc before using it.

Reviewed-by: Alex Hung <alex.h...@amd.com>
Acked-by: Tom Chung <chiahsuan.ch...@amd.com>
Signed-off-by: Hersen Wu <hersenxs...@amd.com>
---
 .../gpu/drm/amd/display/dc/resource/dcn401/dcn401_resource.c    | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/amd/display/dc/resource/dcn401/dcn401_resource.c 
b/drivers/gpu/drm/amd/display/dc/resource/dcn401/dcn401_resource.c
index c244262800e1..75e2c62ae792 100644
--- a/drivers/gpu/drm/amd/display/dc/resource/dcn401/dcn401_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/resource/dcn401/dcn401_resource.c
@@ -1273,6 +1273,8 @@ static struct hpo_dp_link_encoder 
*dcn401_hpo_dp_link_encoder_create(
 
        /* allocate HPO link encoder */
        hpo_dp_enc31 = kzalloc(sizeof(struct dcn31_hpo_dp_link_encoder), 
GFP_KERNEL);
+       if (!hpo_dp_enc31)
+               return NULL; /* out of memory */
 
 #undef REG_STRUCT
 #define REG_STRUCT hpo_dp_link_enc_regs
-- 
2.34.1