[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.
Signed-off-by: Takashi Iwai tiwai@suse.de --- 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);
participants (1)
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Takashi Iwai