linux-kernel - [PATCH] ASoC: fsl_easrc: force cast 'val1' to u32 for do

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Message-Id: <20251229085919.3952347-1-shengjiu.wang@nxp.com>
Date: Mon, 29 Dec 2025 16:59:19 +0800
From: Shengjiu Wang <shengjiu.wang@....com>
To: shengjiu.wang@...il.com,
	Xiubo.Lee@...il.com,
	festevam@...il.com,
	nicoleotsuka@...il.com,
	lgirdwood@...il.com,
	broonie@...nel.org,
	perex@...ex.cz,
	tiwai@...e.com,
	linux-sound@...r.kernel.org,
	linuxppc-dev@...ts.ozlabs.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] ASoC: fsl_easrc: force cast 'val1' to u32 for do_div()

Fix below cocci warnings, the real width of val1 is 32bit, so use force
cast to avoid warning.

cocci warnings: (new ones prefixed by >>)
>> sound/soc/fsl/fsl_easrc.c:1999:2-8: WARNING: do_div() does a 64-by-32 division, please consider using div64_u64 instead.

Fixes: 27147695aaf7 ("ASoC: fsl_easrc: define functions for memory to memory usage")
Reported-by: kernel test robot <lkp@...el.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202512281902.bPsKjjkC-lkp@intel.com/
Signed-off-by: Shengjiu Wang <shengjiu.wang@....com>
---
 sound/soc/fsl/fsl_easrc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/soc/fsl/fsl_easrc.c b/sound/soc/fsl/fsl_easrc.c
index f404a39009e1..16a45a7146e8 100644
--- a/sound/soc/fsl/fsl_easrc.c
+++ b/sound/soc/fsl/fsl_easrc.c
@@ -1996,7 +1996,7 @@ static int fsl_easrc_m2m_calc_out_len(struct fsl_asrc_pair *pair, int input_buff
 		/* right shift 12 bit to make ratio in 32bit space */
 		val2 = (u64)in_samples << (frac_bits - 12);
 		val1 = val1 >> 12;
-		do_div(val2, val1);
+		do_div(val2, (u32)val1);
 		out_samples = val2;
 
 		out_length = out_samples * out_width * channels;
-- 
2.34.1