Hi Jeffrey,

[FYI, it's a private test report for your RFC patch.]
[auto build test ERROR on char-misc/char-misc-testing]
[also build test ERROR on soc/for-next linus/master v5.7-rc6 next-20200519]
[cannot apply to linux/master]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url:    https://github.com/0day-ci/linux/commits/Jeffrey-Hugo/Qualcomm-Cloud-AI-100-driver/20200519-221821
base:   https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git 57c76221d5af648c8355a55c09b050c5d8d38189
config: arm64-allmodconfig (attached as .config)
compiler: aarch64-linux-gcc (GCC) 9.3.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm64 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kbuild test robot <lkp@intel.com>

All errors (new ones prefixed by >>, old ones prefixed by <<):

drivers/misc/qaic/mhi_controller.c: In function 'qaic_mhi_register_controller':
>> drivers/misc/qaic/mhi_controller.c:457:10: error: 'struct mhi_controller' has no member named 'link_status'
457 |  mhi_cntl->link_status = mhi_link_status;
|          ^~

vim +457 drivers/misc/qaic/mhi_controller.c

   430	
   431	struct mhi_controller *qaic_mhi_register_controller(struct pci_dev *pci_dev,
   432							    void __iomem *mhi_bar,
   433							    int mhi_irq)
   434	{
   435		struct mhi_controller *mhi_cntl;
   436		int ret;
   437	
   438		pci_dbg(pci_dev, "%s\n", __func__);
   439	
   440		mhi_cntl = kzalloc(sizeof(*mhi_cntl), GFP_KERNEL);
   441		if (!mhi_cntl)
   442			return ERR_PTR(-ENOMEM);
   443	
   444		mhi_cntl->cntrl_dev = &pci_dev->dev;
   445	
   446		/*
   447		 * Covers the entire possible physical ram region.  Remote side is
   448		 * going to calculate a size of this range, so subtract 1 to prevent
   449		 * rollover.
   450		 */
   451		mhi_cntl->iova_start = 0;
   452		mhi_cntl->iova_stop = PHYS_ADDR_MAX - 1;
   453	
   454		mhi_cntl->status_cb = mhi_status_cb;
   455		mhi_cntl->runtime_get = mhi_runtime_get;
   456		mhi_cntl->runtime_put = mhi_runtime_put;
 > 457		mhi_cntl->link_status = mhi_link_status;
   458		mhi_cntl->regs = mhi_bar;
   459		mhi_cntl->nr_irqs = 1;
   460		mhi_cntl->irq = kmalloc(sizeof(*mhi_cntl->irq), GFP_KERNEL);
   461	
   462		if (!mhi_cntl->irq)
   463			return ERR_PTR(-ENOMEM);
   464	
   465		mhi_cntl->irq[0] = mhi_irq;
   466	
   467		mhi_cntl->fw_image = "qcom/aic100/sbl.bin";
   468	
   469		/* use latest configured timeout */
   470		aic100_config.timeout_ms = mhi_timeout;
   471		ret = mhi_register_controller(mhi_cntl, &aic100_config);
   472		if (ret) {
   473			pci_err(pci_dev, "register_mhi_controller failed %d\n", ret);
   474			kfree(mhi_cntl->irq);
   475			kfree(mhi_cntl);
   476			return ERR_PTR(ret);
   477		}
   478	
   479		ret = mhi_async_power_up(mhi_cntl);
   480		if (ret) {
   481			pci_err(pci_dev, "mhi_async_power_up failed %d\n", ret);
   482			mhi_unregister_controller(mhi_cntl);
   483			kfree(mhi_cntl->irq);
   484			kfree(mhi_cntl);
   485			return ERR_PTR(ret);
   486		}
   487	
   488		return mhi_cntl;
   489	}
   490	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org