linux-kernel - Re: [PATCH 3/4] scsi: fix compiler warning for sg

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Date:	Thu, 5 Nov 2015 14:51:07 +0800
From:	kbuild test robot <lkp@...el.com>
To:	Sinan Kaya <okaya@...eaurora.org>
Cc:	kbuild-all@...org, linux-scsi@...r.kernel.org,
	timur@...eaurora.org, cov@...eaurora.org, jcm@...hat.com,
	Sinan Kaya <okaya@...eaurora.org>,
	Doug Gilbert <dgilbert@...erlog.com>,
	"James E.J. Bottomley" <JBottomley@...n.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/4] scsi: fix compiler warning for sg

Hi Sinan,

[auto build test ERROR on: scsi/for-next]
[also build test ERROR on: v4.3 next-20151105]

url:    https://github.com/0day-ci/linux/commits/Sinan-Kaya/scsi-mpt2sas-try-64-bit-DMA-when-32-bit-DMA-fails/20151105-125248
base:   https://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi.git for-next
config: powerpc-mpc8610_hpcd_defconfig (attached as .config)
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
        # save the attached .config to linux build tree
        make.cross ARCH=powerpc 

All errors (new ones prefixed by >>):

   drivers/built-in.o: In function `sg_ioctl':
>> drivers/scsi/sg.c:897: undefined reference to `__umoddi3'
>> drivers/scsi/sg.c:897: undefined reference to `__udivdi3'
>> drivers/scsi/sg.c:897: undefined reference to `__udivdi3'

vim +897 drivers/scsi/sg.c

^1da177e Linus Torvalds  2005-04-16  891  		return sfp->timeout_user;
^1da177e Linus Torvalds  2005-04-16  892  	case SG_SET_FORCE_LOW_DMA:
^1da177e Linus Torvalds  2005-04-16  893  		result = get_user(val, ip);
^1da177e Linus Torvalds  2005-04-16  894  		if (result)
^1da177e Linus Torvalds  2005-04-16  895  			return result;
^1da177e Linus Torvalds  2005-04-16  896  		if (val) {
^1da177e Linus Torvalds  2005-04-16 @897  			sfp->low_dma = 1;
^1da177e Linus Torvalds  2005-04-16  898  			if ((0 == sfp->low_dma) && (0 == sg_res_in_use(sfp))) {
^1da177e Linus Torvalds  2005-04-16  899  				val = (int) sfp->reserve.bufflen;
95e159d6 Hannes Reinecke 2014-06-25  900  				sg_remove_scat(sfp, &sfp->reserve);

:::::: The code at line 897 was first introduced by commit
:::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2

:::::: TO: Linus Torvalds <torvalds@...970.osdl.org>
:::::: CC: Linus Torvalds <torvalds@...970.osdl.org>

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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