linux-kernel - Re: [PATCH 2/2] iommu/s390: Add support for iommu

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Date:   Sat, 29 Apr 2017 07:02:47 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Joerg Roedel <joro@...tes.org>
Cc:     kbuild-all@...org, Sebastian Ott <sebott@...ux.vnet.ibm.com>,
        Gerald Schaefer <gerald.schaefer@...ibm.com>,
        iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org,
        Joerg Roedel <jroedel@...e.de>
Subject: Re: [PATCH 2/2] iommu/s390: Add support for iommu_device handling

Hi Joerg,

[auto build test ERROR on s390/features]
[also build test ERROR on v4.11-rc8 next-20170428]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Joerg-Roedel/iommu-s390-Fix-iommu-groups-and-add-sysfs-support/20170429-003440
base:   https://git.kernel.org/pub/scm/linux/kernel/git/s390/linux.git features
config: s390-allmodconfig (attached as .config)
compiler: s390x-linux-gnu-gcc (Debian 6.1.1-9) 6.1.1 20160705
reproduce:
        wget https://raw.githubusercontent.com/01org/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        make.cross ARCH=s390 

All errors (new ones prefixed by >>):

   In file included from include/linux/pci.h:1627:0,
                    from include/trace/events/iommu.h:14,
                    from include/linux/iommu.h:27,
                    from drivers/s390/cio/vfio_ccw_cp.c:12:
>> arch/s390/include/asm/pci.h:127:22: error: field 'iommu_dev' has incomplete type
     struct iommu_device iommu_dev;  /* IOMMU core handle */
                         ^~~~~~~~~

vim +/iommu_dev +127 arch/s390/include/asm/pci.h

   121		unsigned long	*iommu_bitmap;
   122		unsigned long	*lazy_bitmap;
   123		unsigned long	iommu_size;
   124		unsigned long	iommu_pages;
   125		unsigned int	next_bit;
   126	
 > 127		struct iommu_device iommu_dev;  /* IOMMU core handle */
   128		struct iommu_group *group;	/* IOMMU group for all devices behind this zdev */
   129	
   130		char res_name[16];

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