linux-kernel - [PATCH] ASoC: SOF: topology: Use kmemdup() to replace kzalloc + memcpy

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Message-Id: <20220317093841.3414-1-hanyihao@vivo.com>
Date:   Thu, 17 Mar 2022 02:38:41 -0700
From:   Yihao Han <hanyihao@...o.com>
To:     Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>,
        Liam Girdwood <lgirdwood@...il.com>,
        Ranjani Sridharan <ranjani.sridharan@...ux.intel.com>,
        Kai Vehmanen <kai.vehmanen@...ux.intel.com>,
        Daniel Baluta <daniel.baluta@....com>,
        Mark Brown <broonie@...nel.org>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        sound-open-firmware@...a-project.org, alsa-devel@...a-project.org,
        linux-kernel@...r.kernel.org
Cc:     kernel@...o.com, Yihao Han <hanyihao@...o.com>
Subject: [PATCH] ASoC: SOF: topology: Use kmemdup() to replace kzalloc + memcpy

fix memdup.cocci warning:
sound/soc/sof/topology.c:876:19-26: WARNING opportunity for kmemdup

Generated by: scripts/coccinelle/api/memdup.cocci

Signed-off-by: Yihao Han <hanyihao@...o.com>
---
 sound/soc/sof/topology.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/sound/soc/sof/topology.c b/sound/soc/sof/topology.c
index 367fbe2d5b31..369693cc6d10 100644
--- a/sound/soc/sof/topology.c
+++ b/sound/soc/sof/topology.c
@@ -873,11 +873,10 @@ static int sof_control_load_bytes(struct snd_soc_component *scomp,
 
 	/* copy the private data */
 	if (priv_size > 0) {
-		scontrol->priv = kzalloc(priv_size, GFP_KERNEL);
+		scontrol->priv = kmemdup(control->priv.data, priv_size, GFP_KERNEL);
 		if (!scontrol->priv)
 			return -ENOMEM;
 
-		memcpy(scontrol->priv, control->priv.data, priv_size);
 		scontrol->priv_size = priv_size;
 	}
 
-- 
2.17.1