tree: git://git.infradead.org/users/hch/misc.git dma-bypass.5 head: 91c147a5866fe30277f17ead1867160777b0f0b7 commit: c8a4f2b48e4e29500a5cd6ae85883608c8189c19 [7/9] dma-mapping: make support for dma ops optional config: x86_64-randconfig-a001-20200708 (attached as .config) compiler: gcc-9 (Debian 9.3.0-14) 9.3.0 reproduce (this is a W=1 build): git checkout c8a4f2b48e4e29500a5cd6ae85883608c8189c19 # save the attached .config to linux build tree make W=1 ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): drivers/misc/mic/bus/mic_bus.c: In function 'mbus_register_device': 150 | mbdev->dev.dma_ops = dma_ops; | ^ -- drivers/misc/mic/bus/scif_bus.c: In function 'scif_register_device': 149 | sdev->dev.dma_ops = dma_ops; | ^ vim +150 drivers/misc/mic/bus/mic_bus.c 726526c3552c57 Sudeep Dutt 2014-07-11 133 726526c3552c57 Sudeep Dutt 2014-07-11 134 struct mbus_device * 5299709d0a8734 Bart Van Assche 2017-01-20 135 mbus_register_device(struct device *pdev, int id, const struct dma_map_ops *dma_ops, d411e793910929 Ashutosh Dixit 2015-09-29 136 struct mbus_hw_ops *hw_ops, int index, d411e793910929 Ashutosh Dixit 2015-09-29 137 void __iomem *mmio_va) 726526c3552c57 Sudeep Dutt 2014-07-11 138 { 726526c3552c57 Sudeep Dutt 2014-07-11 139 int ret; 726526c3552c57 Sudeep Dutt 2014-07-11 140 struct mbus_device *mbdev; 726526c3552c57 Sudeep Dutt 2014-07-11 141 726526c3552c57 Sudeep Dutt 2014-07-11 142 mbdev = kzalloc(sizeof(*mbdev), GFP_KERNEL); 726526c3552c57 Sudeep Dutt 2014-07-11 143 if (!mbdev) 726526c3552c57 Sudeep Dutt 2014-07-11 144 return ERR_PTR(-ENOMEM); 726526c3552c57 Sudeep Dutt 2014-07-11 145 726526c3552c57 Sudeep Dutt 2014-07-11 146 mbdev->mmio_va = mmio_va; 726526c3552c57 Sudeep Dutt 2014-07-11 147 mbdev->dev.parent = pdev; 726526c3552c57 Sudeep Dutt 2014-07-11 148 mbdev->id.device = id; 726526c3552c57 Sudeep Dutt 2014-07-11 149 mbdev->id.vendor = MBUS_DEV_ANY_ID; 5657933dbb6e25 Bart Van Assche 2017-01-20 @150 mbdev->dev.dma_ops = dma_ops; 726526c3552c57 Sudeep Dutt 2014-07-11 151 mbdev->dev.dma_mask = &mbdev->dev.coherent_dma_mask; 726526c3552c57 Sudeep Dutt 2014-07-11 152 dma_set_mask(&mbdev->dev, DMA_BIT_MASK(64)); 726526c3552c57 Sudeep Dutt 2014-07-11 153 mbdev->dev.release = mbus_release_dev; 726526c3552c57 Sudeep Dutt 2014-07-11 154 mbdev->hw_ops = hw_ops; 726526c3552c57 Sudeep Dutt 2014-07-11 155 mbdev->dev.bus = &mic_bus; d411e793910929 Ashutosh Dixit 2015-09-29 156 mbdev->index = index; 726526c3552c57 Sudeep Dutt 2014-07-11 157 dev_set_name(&mbdev->dev, "mbus-dev%u", mbdev->index); 726526c3552c57 Sudeep Dutt 2014-07-11 158 /* 726526c3552c57 Sudeep Dutt 2014-07-11 159 * device_register() causes the bus infrastructure to look for a 726526c3552c57 Sudeep Dutt 2014-07-11 160 * matching driver. 726526c3552c57 Sudeep Dutt 2014-07-11 161 */ 726526c3552c57 Sudeep Dutt 2014-07-11 162 ret = device_register(&mbdev->dev); 726526c3552c57 Sudeep Dutt 2014-07-11 163 if (ret) d411e793910929 Ashutosh Dixit 2015-09-29 164 goto free_mbdev; 726526c3552c57 Sudeep Dutt 2014-07-11 165 return mbdev; 726526c3552c57 Sudeep Dutt 2014-07-11 166 free_mbdev: 82ff3ac7641a64 Geliang Tang 2015-10-11 167 put_device(&mbdev->dev); 726526c3552c57 Sudeep Dutt 2014-07-11 168 return ERR_PTR(ret); 726526c3552c57 Sudeep Dutt 2014-07-11 169 } 726526c3552c57 Sudeep Dutt 2014-07-11 170 EXPORT_SYMBOL_GPL(mbus_register_device); 726526c3552c57 Sudeep Dutt 2014-07-11 171 :::::: The code at line 150 was first introduced by commit :::::: 5657933dbb6e25feaf5d8df8c88f96cdade693a3 treewide: Move dma_ops from struct dev_archdata into struct device :::::: TO: Bart Van Assche <bart.vanassche(a)sandisk.com&gt; :::::: CC: Doug Ledford <dledford(a)redhat.com&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org