archives/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-03-08 01:04:41 +01:00
Code Issues Projects Releases Packages Wiki Activity Actions

ASoC: sophgo: fix 64-bit division build failure

Browse source 
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!

Consolidate those into a single division using the div_u64() macro.

Fixes: 4cf8752a03 ("ASoC: sophgo: add CV1800B internal ADC codec driver")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://patch.msgid.link/20260202095323.1233553-1-arnd@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Arnd Bergmann 2026-02-02 10:53:14 +01:00 • committed by Mark Brown
parent 1db63f6af1
commit cad9720dd7
No known key found for this signature in database
GPG key ID: 24D68B725D5487D0
1 changed files with 2 additions and 5 deletions
Download patch file Download diff file Expand all files Collapse all files

7
sound/soc/sophgo/cv1800b-sound-adc.c
View file

@ -105,11 +105,8 @@ static int cv1800b_adc_setbclk_div(struct cv1800b_priv *priv, unsigned int rate)
if (!priv->mclk_rate || !rate)
return -EINVAL;
tmp = priv->mclk_rate;
tmp /= CV1800B_RXADC_WORD_LEN;
tmp /= CV1800B_RXADC_CHANNELS;
tmp /= rate;
tmp /= 2;
tmp = div_u64(priv->mclk_rate, CV1800B_RXADC_WORD_LEN *
CV1800B_RXADC_CHANNELS * rate * 2);
if (!tmp) {
dev_err(priv->dev, "computed BCLK divider is zero\n");