linux-kernel - Re: ERROR: "__ucmpdi2" [drivers/scsi/sd

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Date:   Tue, 6 Sep 2016 12:28:47 -0500
From:   Mike Christie <mchristi@...hat.com>
To:     kbuild test robot <fengguang.wu@...el.com>
Cc:     kbuild-all@...org, linux-kernel@...r.kernel.org,
        Jens Axboe <axboe@...nel.dk>, realmz6@...il.com,
        adi-buildroot-devel@...ts.sourceforge.net
Subject: Re: ERROR: "__ucmpdi2" [drivers/scsi/sd_mod.ko] undefined!

Adding Steven and adi-buildroot-devel list.

On 09/04/2016 12:12 PM, kbuild test robot wrote:
> Hi Mike,
> 
> FYI, the error/warning still remains.
> 
> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> head:   9ca581b50dab6103183396852cc08e440fcda18e
> commit: 4e1b2d52a80d79296a5d899d73249748dea71a53 block, fs, drivers: remove REQ_OP compat defs and related code
> date:   3 months ago
> config: blackfin-CM-BF548_defconfig (attached as .config)
> compiler: bfin-uclinux-gcc (GCC) 4.6.3
> reproduce:
>         wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
>         chmod +x ~/bin/make.cross
>         git checkout 4e1b2d52a80d79296a5d899d73249748dea71a53
>         # save the attached .config to linux build tree
>         make.cross ARCH=blackfin 
> 
> All errors (new ones prefixed by >>):
> 
>>> ERROR: "__ucmpdi2" [drivers/scsi/sd_mod.ko] undefined!
> 

Blackfin is still maintained by Steven Miao right?

I had sent mail about this before, but did not hear a response, so I am
not sure what to next. I had seen in the past there was a similar error
for blackfin and someone submitted a patch

https://lkml.org/lkml/2015/4/5/4

to add __ucmpdi2. Were there issues with that patch or did you guys want
it fixed differently?