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ALSA: Use scnprintf() instead of snprintf() for show

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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>
This commit is contained in:
Jaejoong Kim 2018-02-27 11:15:59 +09:00 committed by Takashi Iwai
parent 248a380a3c
commit ef21e17501
1 changed files with 2 additions and 2 deletions
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4
sound/core/init.c
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@ -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);