linux-kernel - [PATCH 4.14 17/20] ALSA: usb-audio: US16x08: fix value count for level meters

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Date:   Sun,  6 Dec 2020 12:17:20 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Hector Martin <marcan@...can.st>,
        Takashi Iwai <tiwai@...e.de>
Subject: [PATCH 4.14 17/20] ALSA: usb-audio: US16x08: fix value count for level meters

From: Hector Martin <marcan@...can.st>

commit 402d5840b0d40a2a26c8651165d29b534abb6d36 upstream.

The level meter control returns 34 integers of info. This fixes:

snd-usb-audio 3-1:1.0: control 2:0:0:Level Meter:0: access overflow

Fixes: d2bb390a2081 ("ALSA: usb-audio: Tascam US-16x08 DSP mixer quirk")
Cc: stable@...r.kernel.org
Signed-off-by: Hector Martin <marcan@...can.st>
Link: https://lore.kernel.org/r/20201127132635.18947-1-marcan@marcan.st
Signed-off-by: Takashi Iwai <tiwai@...e.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 sound/usb/mixer_us16x08.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/sound/usb/mixer_us16x08.c
+++ b/sound/usb/mixer_us16x08.c
@@ -617,7 +617,7 @@ static int snd_us16x08_eq_put(struct snd
 static int snd_us16x08_meter_info(struct snd_kcontrol *kcontrol,
 	struct snd_ctl_elem_info *uinfo)
 {
-	uinfo->count = 1;
+	uinfo->count = 34;
 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 	uinfo->value.integer.max = 0x7FFF;
 	uinfo->value.integer.min = 0;