linux-kernel - Re: next-20241028: gcc-8-defconfig : ERROR: modpost: "__aeabi_uldivmod" [drivers/media/dvb-frontends/cxd2841er.ko] undefined!

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Message-ID: <d3903c31-21ae-4ffe-9969-6faa7e430cb5@stanley.mountain>
Date: Thu, 31 Oct 2024 14:27:43 +0300
From: Dan Carpenter <dan.carpenter@...aro.org>
To: Naresh Kamboju <naresh.kamboju@...aro.org>,
	Arnd Bergmann <arnd@...db.de>
Cc: Linux ARM <linux-arm-kernel@...ts.infradead.org>,
	open list <linux-kernel@...r.kernel.org>,
	Linux Regressions <regressions@...ts.linux.dev>,
	lkft-triage@...ts.linaro.org,
	Anders Roxell <anders.roxell@...aro.org>,
	Mauro Carvalho Chehab <mchehab@...nel.org>,
	Linux Media Mailing List <linux-media@...r.kernel.org>
Subject: Re: next-20241028: gcc-8-defconfig : ERROR: modpost:
 "__aeabi_uldivmod" [drivers/media/dvb-frontends/cxd2841er.ko] undefined!

Arnd, can you take a look at this?

This patch fixes the build, but obviously breaks the kernel so don't apply it.
I don't know how do_div() works or what changed though.  All this code looks
ancient.

regards,
dan carpenter

diff --git a/drivers/media/dvb-frontends/cxd2841er.c b/drivers/media/dvb-frontends/cxd2841er.c
index d925ca24183b..e3131f5c6708 100644
--- a/drivers/media/dvb-frontends/cxd2841er.c
+++ b/drivers/media/dvb-frontends/cxd2841er.c
@@ -314,7 +314,7 @@ static u32 cxd2841er_calc_iffreq_xtal(enum cxd2841er_xtal xtal, u32 ifhz)
 	u64 tmp;
 
 	tmp = (u64) ifhz * 16777216;
-	do_div(tmp, ((xtal == SONY_XTAL_24000) ? 48000000 : 41000000));
+//	do_div(tmp, ((xtal == SONY_XTAL_24000) ? 48000000 : 41000000));
 
 	return (u32) tmp;
 }