RE: [PATCH 1/1] scsi: storvsc: Fix a build issue reported by kbuild test robot

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> -----Original Message-----
> From: James Bottomley [mailto:James.Bottomley@xxxxxxxxxxxxxxxxxxxxx]
> Sent: Wednesday, January 27, 2016 10:03 PM
> To: KY Srinivasan <kys@xxxxxxxxxxxxx>; gregkh@xxxxxxxxxxxxxxxxxxx; linux-
> kernel@xxxxxxxxxxxxxxx; devel@xxxxxxxxxxxxxxxxxxxxxx; ohering@xxxxxxxx;
> jbottomley@xxxxxxxxxxxxx; hch@xxxxxxxxxxxxx; linux-scsi@xxxxxxxxxxxxxxx;
> apw@xxxxxxxxxxxxx; vkuznets@xxxxxxxxxx; jasowang@xxxxxxxxxx;
> martin.petersen@xxxxxxxxxx; hare@xxxxxxx
> Subject: Re: [PATCH 1/1] scsi: storvsc: Fix a build issue reported by kbuild test
> robot
> 
> On Wed, 2016-01-27 at 23:29 -0800, K. Y. Srinivasan wrote:
> > tree:   https://na01.safelinks.protection.outlook.com/?url=https%3a%2
> > f%2fgit.kernel.org%2fpub%2fscm%2flinux%2fkernel%2fgit%2ftorvalds%2fli
> >
> nux.git&data=01%7c01%7ckys%40microsoft.com%7ce2e0622715844b79ad71
> 08d3
> >
> 2796ec3c%7c72f988bf86f141af91ab2d7cd011db47%7c1&sdata=ubr4GbBaNS
> %2ftO
> > z%2buJBk0CL9N0UNG9x2TidLgy6Yovg4%3d master
> > head:   03c21cb775a313f1ff19be59c5d02df3e3526471
> > commit: dac582417bc449b1f7f572d3f1dd9d23eec15cc9 storvsc: Properly
> > support Fibre Channel devices
> > date:   3 weeks ago
> > config: x86_64-randconfig-s3-01281016 (attached as .config)
> > reproduce:
> >         git checkout dac582417bc449b1f7f572d3f1dd9d23eec15cc9
> >         # save the attached .config to linux build tree
> >         make ARCH=x86_64
> >
> > All errors (new ones prefixed by >>):
> >
> >    drivers/built-in.o: In function `storvsc_remove':
> > > > storvsc_drv.c:(.text+0x213af7): undefined reference to
> > > > `fc_remove_host'
> >    drivers/built-in.o: In function `storvsc_drv_init':
> > > > storvsc_drv.c:(.init.text+0xcbcc): undefined reference to
> > > > `fc_attach_transport'
> > > > storvsc_drv.c:(.init.text+0xcc06): undefined reference to
> > > > `fc_release_transport'
> >    drivers/built-in.o: In function `storvsc_drv_exit':
> > > > storvsc_drv.c:(.exit.text+0x123c): undefined reference to
> > > > `fc_release_transport'
> >
> > With this commit, the storvsc driver depends on FC atttributes. Make
> > this
> > dependency explicit.
> >
> > Signed-off-by: K. Y. Srinivasan <kys@xxxxxxxxxxxxx>
> > Reported-by: Fengguang Wu <fengguang.wu@xxxxxxxxx>
> > ---
> >  drivers/scsi/Kconfig |    1 +
> >  1 files changed, 1 insertions(+), 0 deletions(-)
> >
> > diff --git a/drivers/scsi/Kconfig b/drivers/scsi/Kconfig
> > index 64eed87..24365c3 100644
> > --- a/drivers/scsi/Kconfig
> > +++ b/drivers/scsi/Kconfig
> > @@ -594,6 +594,7 @@ config XEN_SCSI_FRONTEND
> >  config HYPERV_STORAGE
> >  	tristate "Microsoft Hyper-V virtual storage driver"
> >  	depends on SCSI && HYPERV
> > +	depends on SCSI_FC_ATTRS
> >  	default HYPERV
> >  	help
> >  	  Select this option to enable the Hyper-V virtual storage
> > driver.
> 
> OK, so I thought Hannes requested that you not make the hyperv driver
> depend on the FC attrs and you said you would ... has this changed?
Since 99% of the code would be identical, Hannes agreed that it would not be
good to have a separate FC driver. Given that, this is the only option we have.

Regards,

K. Y
> 
> James

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