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media: dvb-frontends: tda18271c2dd: Remove casting during div

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[ Upstream commit e9a844632630e18ed0671a7e3467431bd719952e ]

do_div() divides 64 bits by 32. We were adding a casting to the divider
to 64 bits, for a number that fits perfectly in 32 bits. Remove it.

Found by cocci:
drivers/media/dvb-frontends/tda18271c2dd.c:355:1-7: WARNING: do_div() does a 64-by-32 division, please consider using div64_u64 instead.
drivers/media/dvb-frontends/tda18271c2dd.c:331:1-7: WARNING: do_div() does a 64-by-32 division, please consider using div64_u64 instead.

Link: https://lore.kernel.org/linux-media/20240429-fix-cocci-v3-8-3c4865f5a4b0@chromium.org
Signed-off-by: Ricardo Ribalda <ribalda@chromium.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
(cherry picked from commit 2401cbc0f5d4bd1e327d247548cc6ee57bc76c53)
Signed-off-by: Vegard Nossum <vegard.nossum@oracle.com>
This commit is contained in:
Ricardo Ribalda 2024-04-29 16:04:47 +01:00 committed by Vegard Nossum
parent 9c1cb2b6cb
commit a65c17e8b9
1 changed files with 2 additions and 2 deletions
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4
drivers/media/dvb-frontends/tda18271c2dd.c
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@ -345,7 +345,7 @@ static int CalcMainPLL(struct tda_state *state, u32 freq)
OscFreq = (u64) freq * (u64) Div;
OscFreq *= (u64) 16384;
do_div(OscFreq, (u64)16000000);
do_div(OscFreq, 16000000);
MainDiv = OscFreq;
state->m_Regs[MPD] = PostDiv & 0x77;
@ -369,7 +369,7 @@ static int CalcCalPLL(struct tda_state *state, u32 freq)
OscFreq = (u64)freq * (u64)Div;
/* CalDiv = u32( OscFreq * 16384 / 16000000 ); */
OscFreq *= (u64)16384;
do_div(OscFreq, (u64)16000000);
do_div(OscFreq, 16000000);
CalDiv = OscFreq;
state->m_Regs[CPD] = PostDiv;