linux-kernel - [PATCH 2/5] ASoC: dapm: Improve a size determination in two functions

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Date:   Thu, 10 Aug 2017 15:02:35 +0200
From:   SF Markus Elfring <elfring@...rs.sourceforge.net>
To:     alsa-devel@...a-project.org, Jaroslav Kysela <perex@...ex.cz>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>, Takashi Iwai <tiwai@...e.com>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org
Subject: [PATCH 2/5] ASoC: dapm: Improve a size determination in two functions

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Thu, 10 Aug 2017 14:15:47 +0200

Replace the specification of data structures by pointer dereferences
as the parameter for the operator "sizeof" to make the corresponding size
determination a bit safer according to the Linux coding style convention.

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 sound/soc/soc-dapm.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c
index 3adb914bc009..e673961210e6 100644
--- a/sound/soc/soc-dapm.c
+++ b/sound/soc/soc-dapm.c
@@ -2651,7 +2651,7 @@ static int snd_soc_dapm_add_path(struct snd_soc_dapm_context *dapm,
 	if (ret)
 		return ret;
 
-	path = kzalloc(sizeof(struct snd_soc_dapm_path), GFP_KERNEL);
+	path = kzalloc(sizeof(*path), GFP_KERNEL);
 	if (!path)
 		return -ENOMEM;
 
@@ -3859,10 +3859,9 @@ int snd_soc_dapm_new_pcm(struct snd_soc_card *card,
 	}
 	kcontrol_dai_link[0].private_value = private_value;
 	/* duplicate kcontrol_dai_link on heap so that memory persists */
-	template.kcontrol_news =
-				devm_kmemdup(card->dev, &kcontrol_dai_link[0],
-					sizeof(struct snd_kcontrol_new),
-					GFP_KERNEL);
+	template.kcontrol_news = devm_kmemdup(card->dev, &kcontrol_dai_link[0],
+					      sizeof(*template.kcontrol_news),
+					      GFP_KERNEL);
 	if (!template.kcontrol_news) {
 		ret = -ENOMEM;
 		goto outfree_private_value;
-- 
2.14.0