From ef21e1750158558d8369067e94d02d285011c37e Mon Sep 17 00:00:00 2001
From: Jaejoong Kim <climbbb.kim@gmail.com>
Date: Tue, 27 Feb 2018 11:15:59 +0900
Subject: [PATCH] ALSA: Use scnprintf() instead of snprintf() for show
Git-commit: ef21e1750158558d8369067e94d02d285011c37e
Patch-mainline: v4.17-rc1
References: bsc#1121278

The show() method should use scnprintf() not snprintf() because snprintf()
may returns a value that exceeds its second argument.

Signed-off-by: Jaejoong Kim <climbbb.kim@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

---
 sound/core/init.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/sound/core/init.c b/sound/core/init.c
index 4fa5dd955740..79b4df1c1dc7 100644
--- a/sound/core/init.c
+++ b/sound/core/init.c
@@ -670,7 +670,7 @@ card_id_show_attr(struct device *dev,
 		  struct device_attribute *attr, char *buf)
 {
 	struct snd_card *card = container_of(dev, struct snd_card, card_dev);
-	return snprintf(buf, PAGE_SIZE, "%s\n", card->id);
+	return scnprintf(buf, PAGE_SIZE, "%s\n", card->id);
 }
 
 static ssize_t
@@ -710,7 +710,7 @@ card_number_show_attr(struct device *dev,
 		     struct device_attribute *attr, char *buf)
 {
 	struct snd_card *card = container_of(dev, struct snd_card, card_dev);
-	return snprintf(buf, PAGE_SIZE, "%i\n", card->number);
+	return scnprintf(buf, PAGE_SIZE, "%i\n", card->number);
 }
 
 static DEVICE_ATTR(number, S_IRUGO, card_number_show_attr, NULL);
-- 
2.20.1