From: Gen Zhang <blackgod016574@gmail.com>
Date: Wed, 29 May 2019 01:53:05 +0000 (+0800)
Subject: wcd9335: fix a incorrect use of kstrndup()
X-Git-Tag: Ubuntu-5.10.0-12.13~4757^2~7^2~424
X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=a54988113985ca22e414e132054f234fc8a92604;p=mirror_ubuntu-hirsute-kernel.git

wcd9335: fix a incorrect use of kstrndup()

In wcd9335_codec_enable_dec(), 'widget_name' is allocated by kstrndup().
However, according to doc: "Note: Use kmemdup_nul() instead if the size
is known exactly." So we should use kmemdup_nul() here instead of
kstrndup().

Signed-off-by: Gen Zhang <blackgod016574@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
---

diff --git a/sound/soc/codecs/wcd9335.c b/sound/soc/codecs/wcd9335.c
index a04a7cedd99d..85737fe54474 100644
--- a/sound/soc/codecs/wcd9335.c
+++ b/sound/soc/codecs/wcd9335.c
@@ -2734,7 +2734,7 @@ static int wcd9335_codec_enable_dec(struct snd_soc_dapm_widget *w,
 	char *dec;
 	u8 hpf_coff_freq;
 
-	widget_name = kstrndup(w->name, 15, GFP_KERNEL);
+	widget_name = kmemdup_nul(w->name, 15, GFP_KERNEL);
 	if (!widget_name)
 		return -ENOMEM;