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From:   Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
To:     broonie@kernel.org
Cc:     lgirdwood@gmail.com, perex@perex.cz, tiwai@suse.com,
        pierre-louis.bossart@linux.intel.com, alsa-devel@alsa-project.org,
        linux-kernel@vger.kernel.org, quic_srivasam@quicinc.com,
        Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Subject: [PATCH v2 3/9] ASoC: codecs: tx-macro: fix accessing array out of bounds for enum type
Date:   Tue, 22 Feb 2022 18:32:06 +0000
Message-Id: <20220222183212.11580-4-srinivas.kandagatla@linaro.org>
In-Reply-To: <20220222183212.11580-1-srinivas.kandagatla@linaro.org>
References: <20220222183212.11580-1-srinivas.kandagatla@linaro.org>
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Accessing enums using integer would result in array out of bounds access
on platforms like aarch64 where sizeof(long) is 8 compared to enum size
which is 4 bytes.

Also few return value of put functions, so that change notifications are
sent correctly.

Fixes: c39667ddcfc5 ("ASoC: codecs: lpass-tx-macro: add support for lpass tx macro")
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
---
 sound/soc/codecs/lpass-tx-macro.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/sound/soc/codecs/lpass-tx-macro.c b/sound/soc/codecs/lpass-tx-macro.c
index 9c96ab1bf84f..7347d79a6329 100644
--- a/sound/soc/codecs/lpass-tx-macro.c
+++ b/sound/soc/codecs/lpass-tx-macro.c
@@ -997,7 +997,7 @@ static int tx_macro_dec_mode_get(struct snd_kcontrol *kcontrol,
 	struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
 	int path = e->shift_l;
 
-	ucontrol->value.integer.value[0] = tx->dec_mode[path];
+	ucontrol->value.enumerated.item[0] = tx->dec_mode[path];
 
 	return 0;
 }
@@ -1006,14 +1006,14 @@ static int tx_macro_dec_mode_put(struct snd_kcontrol *kcontrol,
 				 struct snd_ctl_elem_value *ucontrol)
 {
 	struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
-	int value = ucontrol->value.integer.value[0];
+	int value = ucontrol->value.enumerated.item[0];
 	struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
 	int path = e->shift_l;
 	struct tx_macro *tx = snd_soc_component_get_drvdata(component);
 
 	tx->dec_mode[path] = value;
 
-	return 0;
+	return 1;
 }
 
 static int tx_macro_get_bcs(struct snd_kcontrol *kcontrol,
@@ -1036,7 +1036,7 @@ static int tx_macro_set_bcs(struct snd_kcontrol *kcontrol,
 
 	tx->bcs_enable = value;
 
-	return 0;
+	return 1;
 }
 
 static int tx_macro_hw_params(struct snd_pcm_substream *substream,
-- 
2.21.0