linux-kernel - [PATCH v3 22/26] media: tc358746: Use the correct div

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Message-Id: <20240429-fix-cocci-v3-22-3c4865f5a4b0@chromium.org>
Date: Mon, 29 Apr 2024 15:05:01 +0000
From: Ricardo Ribalda <ribalda@...omium.org>
To: Martin Tuma <martin.tuma@...iteqautomotive.com>, 
 Mauro Carvalho Chehab <mchehab@...nel.org>, 
 Laurent Pinchart <laurent.pinchart@...asonboard.com>, 
 Hugues Fruchet <hugues.fruchet@...s.st.com>, 
 Alain Volmat <alain.volmat@...s.st.com>, 
 Maxime Coquelin <mcoquelin.stm32@...il.com>, 
 Alexandre Torgue <alexandre.torgue@...s.st.com>, 
 Paul Kocialkowski <paul.kocialkowski@...tlin.com>, 
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
 Chen-Yu Tsai <wens@...e.org>, Jernej Skrabec <jernej.skrabec@...il.com>, 
 Samuel Holland <samuel@...lland.org>, 
 Sakari Ailus <sakari.ailus@...ux.intel.com>, 
 Thierry Reding <thierry.reding@...il.com>, 
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 Dmitry Osipenko <digetx@...il.com>, 
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 Sylvain Petinot <sylvain.petinot@...s.st.com>, 
 Stanimir Varbanov <stanimir.k.varbanov@...il.com>, 
 Vikash Garodia <quic_vgarodia@...cinc.com>, 
 Bryan O'Donoghue <bryan.odonoghue@...aro.org>, 
 Bjorn Andersson <andersson@...nel.org>, 
 Konrad Dybcio <konrad.dybcio@...aro.org>
Cc: linux-media@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-stm32@...md-mailman.stormreply.com, 
 linux-arm-kernel@...ts.infradead.org, linux-staging@...ts.linux.dev, 
 linux-sunxi@...ts.linux.dev, linux-tegra@...r.kernel.org, 
 linux-mediatek@...ts.infradead.org, linux-arm-msm@...r.kernel.org, 
 Ricardo Ribalda <ribalda@...omium.org>
Subject: [PATCH v3 22/26] media: tc358746: Use the correct div_ function

fin does not fit in 32 bits in some arches.

Found by cocci:
drivers/media/i2c/tc358746.c:847:2-8: WARNING: do_div() does a 64-by-32 division, please consider using div64_ul instead.

Signed-off-by: Ricardo Ribalda <ribalda@...omium.org>
---
 drivers/media/i2c/tc358746.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/media/i2c/tc358746.c b/drivers/media/i2c/tc358746.c
index d676adc4401b..edf79107adc5 100644
--- a/drivers/media/i2c/tc358746.c
+++ b/drivers/media/i2c/tc358746.c
@@ -844,8 +844,7 @@ static unsigned long tc358746_find_pll_settings(struct tc358746 *tc358746,
 			continue;
 
 		tmp = fout * postdiv;
-		do_div(tmp, fin);
-		mul = tmp;
+		mul = div64_ul(tmp, fin);
 		if (mul > 511)
 			continue;
 

-- 
2.44.0.769.g3c40516874-goog