public inbox for sophgo@lists.linux.dev
 help / color / mirror / Atom feed
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


             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

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20260202215956.2127414-1-arnd@kernel.org \
    --to=arnd@kernel.org \
    --cc=alexander.sverdlin@gmail.com \
    --cc=arnd@arndb.de \
    --cc=broonie@kernel.org \
    --cc=inochiama@gmail.com \
    --cc=lgirdwood@gmail.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-sound@vger.kernel.org \
    --cc=perex@perex.cz \
    --cc=sophgo@lists.linux.dev \
    --cc=stavinsky@gmail.com \
    --cc=tiwai@suse.com \
    --cc=unicorn_wang@outlook.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox