From: Takashi Iwai <tiwai@suse.de>
Date: Fri, 31 May 2019 09:46:49 +0000 (+0200)
Subject: ALSA: hda: Use struct_size()
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=a2d4560f0be9a48cd342992fbec0688ea05d564b;p=openwrt%2Fstaging%2Fblogic.git

ALSA: hda: Use struct_size()

For code simplification and safety, use struct_size() macro for
calculating the hda_conn_list object size with the variable array.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
---

diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c
index b20eb7fc83eb..d0f1dbcfbda4 100644
--- a/sound/pci/hda/hda_codec.c
+++ b/sound/pci/hda/hda_codec.c
@@ -122,7 +122,7 @@ static int add_conn_list(struct hda_codec *codec, hda_nid_t nid, int len,
 {
 	struct hda_conn_list *p;
 
-	p = kmalloc(sizeof(*p) + len * sizeof(hda_nid_t), GFP_KERNEL);
+	p = kmalloc(struct_size(p, conns, len), GFP_KERNEL);
 	if (!p)
 		return -ENOMEM;
 	p->len = len;