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Date: Thu, 23 Sep 2021 19:49:56 +0000 From: Min Li <min.li.xe@...esas.com> To: Jakub Kicinski <kuba@...nel.org> CC: "richardcochran@...il.com" <richardcochran@...il.com>, "netdev@...r.kernel.org" <netdev@...r.kernel.org>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, "lee.jones@...aro.org" <lee.jones@...aro.org> Subject: RE: [PATCH net-next] ptp: clockmatrix: use rsmu driver to access i2c/spi bus > -----Original Message----- > From: Jakub Kicinski <kuba@...nel.org> > Sent: September 23, 2021 12:42 PM > To: Min Li <min.li.xe@...esas.com> > Cc: richardcochran@...il.com; netdev@...r.kernel.org; linux- > kernel@...r.kernel.org; lee.jones@...aro.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@...esas.com wrote: > > > > From: Min Li <min.li.xe@...esas.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
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