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From: Min Li <min.li.xe@renesas.com>
To: Jakub Kicinski <kuba@kernel.org>
Cc: "richardcochran@gmail.com" <richardcochran@gmail.com>,
	"netdev@vger.kernel.org" <netdev@vger.kernel.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"lee.jones@linaro.org" <lee.jones@linaro.org>
Subject: RE: [PATCH net-next] ptp: clockmatrix: use rsmu driver to access i2c/spi bus
Date: Thu, 23 Sep 2021 19:49:56 +0000	[thread overview]
Message-ID: <TYCPR01MB66086FB0DF1CBCC00F716A7ABAA39@TYCPR01MB6608.jpnprd01.prod.outlook.com> (raw)
In-Reply-To: <20210923094146.0caaf4e2@kicinski-fedora-pc1c0hjn.dhcp.thefacebook.com>



> -----Original Message-----
> From: Jakub Kicinski <kuba@kernel.org>
> Sent: September 23, 2021 12:42 PM
> To: Min Li <min.li.xe@renesas.com>
> Cc: richardcochran@gmail.com; netdev@vger.kernel.org; linux-
> kernel@vger.kernel.org; lee.jones@linaro.org
> Subject: Re: [PATCH net-next] ptp: clockmatrix: use rsmu driver to access
> i2c/spi bus
> 
> On Thu, 23 Sep 2021 16:29:44 +0000 Min Li wrote:
> > > On Wed, 22 Sep 2021 09:57:14 -0400 min.li.xe@renesas.com wrote:
> > > > From: Min Li <min.li.xe@renesas.com>
> > > >
> > > > rsmu (Renesas Synchronization Management Unit ) driver is located
> > > > in drivers/mfd and responsible for creating multiple devices
> > > > including clockmatrix phc, which will then use the exposed regmap
> > > > and mutex handle to access i2c/spi bus.
> > >
> > > Does not build on 32 bit. You need to use division helpers.
> >
> > Hi Jakub
> >
> > I did build it through 32 bit arm and didn't get the problem.
> >
> > make ARCH=arm CROSS_COMPILE=arm-linux-gnueabi-
> 
> We're testing x86, maybe arm32 can handle 64bit divisions natively?
> 
> ERROR: modpost: "__divdi3" [drivers/ptp/ptp_clockmatrix.ko] undefined!
> ERROR: modpost: "__udivdi3" [drivers/ptp/ptp_clockmatrix.ko] undefined!

Hi Jakub

I tried "make ARCH=i386" but it also passed on my machine. Can you tell me how to
reproduce this? Thanks

Min

  reply	other threads:[~2021-09-23 19:50 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-22 13:57 [PATCH net-next] ptp: clockmatrix: use rsmu driver to access i2c/spi bus min.li.xe
2021-09-23 15:30 ` Jakub Kicinski
2021-09-23 16:29   ` Min Li
2021-09-23 16:41     ` Jakub Kicinski
2021-09-23 19:49       ` Min Li [this message]
2021-09-23 20:04         ` Jakub Kicinski
2021-09-23 21:05           ` Min Li

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