Re: [PATCH] scsi: ibmvscsi: Use dma_alloc_coherent() instead of get_zeroed_page/dma_map_single()

[kernel test robot <lkp@xxxxxxxxx>]

Hi Cai,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on powerpc/next]
[also build test ERROR on v5.15-rc5 next-20211011]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/Cai-Huoqing/scsi-ibmvscsi-Use-dma_alloc_coherent-instead-of-get_zeroed_page-dma_map_single/20211011-000515
base:   https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git next
config: powerpc-allyesconfig (attached as .config)
compiler: powerpc64-linux-gcc (GCC) 11.2.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/0day-ci/linux/commit/a1533699f9b84980097fc59d047b5292c1abab1b
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Cai-Huoqing/scsi-ibmvscsi-Use-dma_alloc_coherent-instead-of-get_zeroed_page-dma_map_single/20211011-000515
        git checkout a1533699f9b84980097fc59d047b5292c1abab1b
        # save the attached .config to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=powerpc SHELL=/bin/bash

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All errors (new ones prefixed by >>):

   drivers/scsi/ibmvscsi/ibmvscsi.c: In function 'ibmvscsi_init_crq_queue':
>> drivers/scsi/ibmvscsi/ibmvscsi.c:334:21: error: 'struct crq_queue' has no member named 'msg'; did you mean 'msgs'?
     334 |         if (!queue->msg)
         |                     ^~~
         |                     msgs
   drivers/scsi/ibmvscsi/ibmvscsi.c:388:60: error: 'struct crq_queue' has no member named 'msg'; did you mean 'msgs'?
     388 |         dma_free_coherent(hostdata->dev, PAGE_SIZE, queue->msg, queue->msg_token);
         |                                                            ^~~
         |                                                            msgs


vim +334 drivers/scsi/ibmvscsi/ibmvscsi.c

   312	
   313	/**
   314	 * ibmvscsi_init_crq_queue() - Initializes and registers CRQ with hypervisor
   315	 * @queue:		crq_queue to initialize and register
   316	 * @hostdata:		ibmvscsi_host_data of host
   317	 * @max_requests:	maximum requests (unused)
   318	 *
   319	 * Allocates a page for messages, maps it for dma, and registers
   320	 * the crq with the hypervisor.
   321	 * Returns zero on success.
   322	 */
   323	static int ibmvscsi_init_crq_queue(struct crq_queue *queue,
   324					   struct ibmvscsi_host_data *hostdata,
   325					   int max_requests)
   326	{
   327		int rc;
   328		int retrc;
   329		struct vio_dev *vdev = to_vio_dev(hostdata->dev);
   330	
   331		queue->size = PAGE_SIZE / sizeof(*queue->msgs);
   332		queue->msgs = dma_alloc_coherent(hostdata->dev, PAGE_SIZE,
   333						&queue->msg_token, GFP_KERNEL);
 > 334		if (!queue->msg)
   335			goto malloc_failed;
   336	
   337		gather_partition_info();
   338		set_adapter_info(hostdata);
   339	
   340		retrc = rc = plpar_hcall_norets(H_REG_CRQ,
   341					vdev->unit_address,
   342					queue->msg_token, PAGE_SIZE);
   343		if (rc == H_RESOURCE)
   344			/* maybe kexecing and resource is busy. try a reset */
   345			rc = ibmvscsi_reset_crq_queue(queue,
   346						      hostdata);
   347	
   348		if (rc == H_CLOSED) {
   349			/* Adapter is good, but other end is not ready */
   350			dev_warn(hostdata->dev, "Partner adapter not ready\n");
   351			retrc = 0;
   352		} else if (rc != 0) {
   353			dev_warn(hostdata->dev, "Error %d opening adapter\n", rc);
   354			goto reg_crq_failed;
   355		}
   356	
   357		queue->cur = 0;
   358		spin_lock_init(&queue->lock);
   359	
   360		tasklet_init(&hostdata->srp_task, (void *)ibmvscsi_task,
   361			     (unsigned long)hostdata);
   362	
   363		if (request_irq(vdev->irq,
   364				ibmvscsi_handle_event,
   365				0, "ibmvscsi", (void *)hostdata) != 0) {
   366			dev_err(hostdata->dev, "couldn't register irq 0x%x\n",
   367				vdev->irq);
   368			goto req_irq_failed;
   369		}
   370	
   371		rc = vio_enable_interrupts(vdev);
   372		if (rc != 0) {
   373			dev_err(hostdata->dev, "Error %d enabling interrupts!!!\n", rc);
   374			goto req_irq_failed;
   375		}
   376	
   377		return retrc;
   378	
   379	      req_irq_failed:
   380		tasklet_kill(&hostdata->srp_task);
   381		rc = 0;
   382		do {
   383			if (rc)
   384				msleep(100);
   385			rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address);
   386		} while ((rc == H_BUSY) || (H_IS_LONG_BUSY(rc)));
   387	      reg_crq_failed:
   388		dma_free_coherent(hostdata->dev, PAGE_SIZE, queue->msg, queue->msg_token);
   389	      malloc_failed:
   390		return -1;
   391	}
   392	

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

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