From: Arnd Bergmann <arnd@kernel.org>
To: Liam Girdwood <lgirdwood@gmail.com>,
Mark Brown <broonie@kernel.org>, Jaroslav Kysela <perex@perex.cz>,
Takashi Iwai <tiwai@suse.com>,
Chen Wang <unicorn_wang@outlook.com>,
Inochi Amaoto <inochiama@gmail.com>,
"Anton D. Stavinskii" <stavinsky@gmail.com>
Cc: Arnd Bergmann <arnd@arndb.de>,
Alexander Sverdlin <alexander.sverdlin@gmail.com>,
linux-sound@vger.kernel.org, sophgo@lists.linux.dev,
linux-kernel@vger.kernel.org
Subject: [PATCH] [v2] ASoC: sophgo: fix 64-bit division build failure
Date: Mon, 2 Feb 2026 22:59:44 +0100 [thread overview]
Message-ID: <20260202215956.2127414-1-arnd@kernel.org> (raw)
From: Arnd Bergmann <arnd@arndb.de>
cv1800b_adc_setbclk_div() does four 64-bit divisions in a row, which
is rather inefficient on 32-bit systems, and using the plain division
causes a build failure as a result:
ERROR: modpost: "__aeabi_uldivmod" [sound/soc/sophgo/cv1800b-sound-adc.ko] undefined!
As the input value is actually a 32-bit integer, just change the type
of the temporary value as well.
Fixes: 4cf8752a03e6 ("ASoC: sophgo: add CV1800B internal ADC codec driver")
Suggested-by: Alexander Sverdlin <alexander.sverdlin@gmail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
sound/soc/sophgo/cv1800b-sound-adc.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/sound/soc/sophgo/cv1800b-sound-adc.c b/sound/soc/sophgo/cv1800b-sound-adc.c
index 794030b713e9..de1c77014c2f 100644
--- a/sound/soc/sophgo/cv1800b-sound-adc.c
+++ b/sound/soc/sophgo/cv1800b-sound-adc.c
@@ -100,7 +100,7 @@ static int cv1800b_adc_setbclk_div(struct cv1800b_priv *priv, unsigned int rate)
{
u32 val;
u32 bclk_div;
- u64 tmp;
+ u32 tmp;
if (!priv->mclk_rate || !rate)
return -EINVAL;
@@ -117,7 +117,7 @@ static int cv1800b_adc_setbclk_div(struct cv1800b_priv *priv, unsigned int rate)
}
if (tmp > 256) {
- dev_err(priv->dev, "BCLK divider %llu out of range\n", tmp);
+ dev_err(priv->dev, "BCLK divider %u out of range\n", tmp);
return -EINVAL;
}
--
2.39.5
next reply other threads:[~2026-02-02 22:00 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-02-02 21:59 Arnd Bergmann [this message]
2026-02-02 22:04 ` [PATCH] [v2] ASoC: sophgo: fix 64-bit division build failure Alexander Sverdlin
2026-02-03 10:59 ` Mark Brown
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