[PATCH linux-next] drm/amd/display: replace kzalloc and memcpy with kmemdup

[yang.guang5]

From: Yang Guang <yang.guang5@xxxxxxxxxx>

Convert kzalloc/memcpy operations to memdup makes for 
cleaner code and avoids memcpy() failures

Signed-off-by: Chen Haonan <chen.haonan2@xxxxxxxxxx>
---
 drivers/gpu/drm/amd/display/dc/core/dc.c | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c
index 76b47f178127..867e1a0fdef6 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
@@ -2264,12 +2264,10 @@ struct dc_state *dc_copy_state(struct dc_state *src_ctx)

 #ifdef CONFIG_DRM_AMD_DC_FP
 	if (new_ctx->bw_ctx.dml2) {
-		dml2 = kzalloc(sizeof(struct dml2_context), GFP_KERNEL);
-		if (!dml2)
-			return NULL;
-
-		memcpy(dml2, src_ctx->bw_ctx.dml2, sizeof(struct dml2_context));
-		new_ctx->bw_ctx.dml2 = dml2;
+		dml2 = kmemdup(src_ctx->bw_ctx.dml2, sizeof(struct dml2_context), GFP_KERNEL);
+		if (!dml2)
+			return NULL;
+		new_ctx->bw_ctx.dml2 = dml2;
 	}
 #endif

-- 
2.25.1