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ASoC: Add check to prevent buffer overflow for port_idx

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Add check to prevent buffer overflow for port_idx in
dai driver.

Change-Id: Id3126520e52590204fdb8bf92d3c4c52b1867354
Signed-off-by: Vatsal Bucha <vbucha@codeaurora.org>
This commit is contained in:
Vatsal Bucha 2021-03-30 13:27:06 +05:30
commit 2781295e91
1 changed files with 9 additions and 1 deletions
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10
asoc/msm-dai-q6-v2.c
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@ -1,5 +1,5 @@
// SPDX-License-Identifier: GPL-2.0-only
/* Copyright (c) 2012-2020, The Linux Foundation. All rights reserved.
/* Copyright (c) 2012-2021, The Linux Foundation. All rights reserved.
*/
#include <linux/init.h>
@ -9296,6 +9296,10 @@ static int msm_pcm_afe_port_logging_ctl_get(struct snd_kcontrol *kcontrol,
int port_idx = afe_port_logging_port_id - AFE_PORT_ID_TDM_PORT_RANGE_START;
ucontrol->value.integer.value[0] = afe_port_logging_port_id;
if (port_idx < 0 || port_idx >= IDX_TDM_MAX) {
pr_err_ratelimited("%s: port_idx = %d\n", __func__, port_idx);
return -EINVAL;
}
ucontrol->value.integer.value[1] = afe_port_logging_item[port_idx];
return 0;
@ -9322,6 +9326,10 @@ static int msm_pcm_afe_port_logging_ctl_put(struct snd_kcontrol *kcontrol,
afe_port_logging_port_id = port_id;
port_idx = port_id - AFE_PORT_ID_TDM_PORT_RANGE_START;
if (port_idx < 0 || port_idx >= IDX_TDM_MAX) {
pr_err_ratelimited("%s: port_idx = %d\n", __func__, port_idx);
return -EINVAL;
}
afe_port_logging_item[port_idx] = ucontrol->value.integer.value[1];
return ret;