linux-kernel - [PATCH AUTOSEL 6.6 07/47] ASoC: nau8822: Fix incorrect type in assignment and cast to restricted _

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Mon, 11 Dec 2023 08:50:08 -0500
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     David Lin <CTLIN0@...oton.com>, kernel test robot <lkp@...el.com>,
        Mark Brown <broonie@...nel.org>,
        Sasha Levin <sashal@...nel.org>, lgirdwood@...il.com,
        perex@...ex.cz, tiwai@...e.com, francesco.dolcini@...adex.com,
        emanuele.ghidoli@...adex.com, u.kleine-koenig@...gutronix.de,
        linux-sound@...r.kernel.org
Subject: [PATCH AUTOSEL 6.6 07/47] ASoC: nau8822: Fix incorrect type in assignment and cast to restricted __be16

From: David Lin <CTLIN0@...oton.com>

[ Upstream commit c1501f2597dd08601acd42256a4b0a0fc36bf302 ]

This issue is reproduced when W=1 build in compiler gcc-12.
The following are sparse warnings:

sound/soc/codecs/nau8822.c:199:25: sparse: sparse: incorrect type in assignment
sound/soc/codecs/nau8822.c:199:25: sparse: expected unsigned short
sound/soc/codecs/nau8822.c:199:25: sparse: got restricted __be16
sound/soc/codecs/nau8822.c:235:25: sparse: sparse: cast to restricted __be16
sound/soc/codecs/nau8822.c:235:25: sparse: sparse: cast to restricted __be16
sound/soc/codecs/nau8822.c:235:25: sparse: sparse: cast to restricted __be16
sound/soc/codecs/nau8822.c:235:25: sparse: sparse: cast to restricted __be16

Reported-by: kernel test robot <lkp@...el.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202311122320.T1opZVkP-lkp@intel.com/
Signed-off-by: David Lin <CTLIN0@...oton.com>
Link: https://lore.kernel.org/r/20231117043011.1747594-1-CTLIN0@nuvoton.com
Signed-off-by: Mark Brown <broonie@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 sound/soc/codecs/nau8822.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/sound/soc/codecs/nau8822.c b/sound/soc/codecs/nau8822.c
index ff3024899f456..7199d734c79f2 100644
--- a/sound/soc/codecs/nau8822.c
+++ b/sound/soc/codecs/nau8822.c
@@ -184,6 +184,7 @@ static int nau8822_eq_get(struct snd_kcontrol *kcontrol,
 	struct soc_bytes_ext *params = (void *)kcontrol->private_value;
 	int i, reg;
 	u16 reg_val, *val;
+	__be16 tmp;
 
 	val = (u16 *)ucontrol->value.bytes.data;
 	reg = NAU8822_REG_EQ1;
@@ -192,8 +193,8 @@ static int nau8822_eq_get(struct snd_kcontrol *kcontrol,
 		/* conversion of 16-bit integers between native CPU format
 		 * and big endian format
 		 */
-		reg_val = cpu_to_be16(reg_val);
-		memcpy(val + i, &reg_val, sizeof(reg_val));
+		tmp = cpu_to_be16(reg_val);
+		memcpy(val + i, &tmp, sizeof(tmp));
 	}
 
 	return 0;
@@ -216,6 +217,7 @@ static int nau8822_eq_put(struct snd_kcontrol *kcontrol,
 	void *data;
 	u16 *val, value;
 	int i, reg, ret;
+	__be16 *tmp;
 
 	data = kmemdup(ucontrol->value.bytes.data,
 		params->max, GFP_KERNEL | GFP_DMA);
@@ -228,7 +230,8 @@ static int nau8822_eq_put(struct snd_kcontrol *kcontrol,
 		/* conversion of 16-bit integers between native CPU format
 		 * and big endian format
 		 */
-		value = be16_to_cpu(*(val + i));
+		tmp = (__be16 *)(val + i);
+		value = be16_to_cpup(tmp);
 		ret = snd_soc_component_write(component, reg + i, value);
 		if (ret) {
 			dev_err(component->dev,
-- 
2.42.0