From 0a7efa14e61ae2132fd718887deb28479b33386b Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Fri, 13 Mar 2020 14:02:41 +0100 Subject: [PATCH] ALSA: hda: Use scnprintf() for string truncation snd_hdac_codec_modalias() truncates the string to the given size and returns its size, but it returned a wrong size from snprintf(). snprintf() returns the would-be-output size, not the actual size. Use scnprintf() instead to return the correct size. Link: https://lore.kernel.org/r/20200313130241.8970-1-tiwai@suse.de Signed-off-by: Takashi Iwai --- sound/hda/hdac_device.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/sound/hda/hdac_device.c b/sound/hda/hdac_device.c index 9a526aeef8da..e3119f5cb0d5 100644 --- a/sound/hda/hdac_device.c +++ b/sound/hda/hdac_device.c @@ -204,7 +204,7 @@ EXPORT_SYMBOL_GPL(snd_hdac_device_set_chip_name); */ int snd_hdac_codec_modalias(struct hdac_device *codec, char *buf, size_t size) { - return snprintf(buf, size, "hdaudio:v%08Xr%08Xa%02X\n", + return scnprintf(buf, size, "hdaudio:v%08Xr%08Xa%02X\n", codec->vendor_id, codec->revision_id, codec->type); } EXPORT_SYMBOL_GPL(snd_hdac_codec_modalias); -- 2.11.0