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Message-ID: <202102142208.zL45aGfw-lkp@intel.com>
Date:   Sun, 14 Feb 2021 22:51:23 +0800
From:   kernel test robot <lkp@...el.com>
To:     Tom Rix <trix@...hat.com>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        Takashi Iwai <tiwai@...e.de>
Subject: sound/pci/asihpi/hpioctl.c:346:9: warning: missing braces around
 initializer

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   ac30d8ce28d61c05ac3a8b1452e889371136f3af
commit: 472eb39103e885f302fd8fd6eff104fcf5503f1b ALSA: asihpi: fix iounmap in error handler
date:   5 months ago
config: i386-randconfig-a014-20200624 (attached as .config)
compiler: gcc-4.9 (Ubuntu 4.9.3-13ubuntu2) 4.9.3
reproduce (this is a W=1 build):
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=472eb39103e885f302fd8fd6eff104fcf5503f1b
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 472eb39103e885f302fd8fd6eff104fcf5503f1b
        # save the attached .config to linux build tree
        make W=1 ARCH=i386 

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

All warnings (new ones prefixed by >>):

   sound/pci/asihpi/hpioctl.c: In function 'asihpi_adapter_probe':
>> sound/pci/asihpi/hpioctl.c:346:9: warning: missing braces around initializer [-Wmissing-braces]
     struct hpi_pci pci = { 0 };
            ^
   sound/pci/asihpi/hpioctl.c:346:9: warning: (near initialization for 'pci.ap_mem_base') [-Wmissing-braces]


vim +346 sound/pci/asihpi/hpioctl.c

   336	
   337	int asihpi_adapter_probe(struct pci_dev *pci_dev,
   338				 const struct pci_device_id *pci_id)
   339	{
   340		int idx, nm, low_latency_mode = 0, irq_supported = 0;
   341		int adapter_index;
   342		unsigned int memlen;
   343		struct hpi_message hm;
   344		struct hpi_response hr;
   345		struct hpi_adapter adapter;
 > 346		struct hpi_pci pci = { 0 };
   347	
   348		memset(&adapter, 0, sizeof(adapter));
   349	
   350		dev_printk(KERN_DEBUG, &pci_dev->dev,
   351			"probe %04x:%04x,%04x:%04x,%04x\n", pci_dev->vendor,
   352			pci_dev->device, pci_dev->subsystem_vendor,
   353			pci_dev->subsystem_device, pci_dev->devfn);
   354	
   355		if (pci_enable_device(pci_dev) < 0) {
   356			dev_err(&pci_dev->dev,
   357				"pci_enable_device failed, disabling device\n");
   358			return -EIO;
   359		}
   360	
   361		pci_set_master(pci_dev);	/* also sets latency timer if < 16 */
   362	
   363		hpi_init_message_response(&hm, &hr, HPI_OBJ_SUBSYSTEM,
   364			HPI_SUBSYS_CREATE_ADAPTER);
   365		hpi_init_response(&hr, HPI_OBJ_SUBSYSTEM, HPI_SUBSYS_CREATE_ADAPTER,
   366			HPI_ERROR_PROCESSING_MESSAGE);
   367	
   368		hm.adapter_index = HPI_ADAPTER_INDEX_INVALID;
   369	
   370		nm = HPI_MAX_ADAPTER_MEM_SPACES;
   371	
   372		for (idx = 0; idx < nm; idx++) {
   373			HPI_DEBUG_LOG(INFO, "resource %d %pR\n", idx,
   374				&pci_dev->resource[idx]);
   375	
   376			if (pci_resource_flags(pci_dev, idx) & IORESOURCE_MEM) {
   377				memlen = pci_resource_len(pci_dev, idx);
   378				pci.ap_mem_base[idx] =
   379					ioremap(pci_resource_start(pci_dev, idx),
   380					memlen);
   381				if (!pci.ap_mem_base[idx]) {
   382					HPI_DEBUG_LOG(ERROR,
   383						"ioremap failed, aborting\n");
   384					/* unmap previously mapped pci mem space */
   385					goto err;
   386				}
   387			}
   388		}
   389	
   390		pci.pci_dev = pci_dev;
   391		hm.u.s.resource.bus_type = HPI_BUS_PCI;
   392		hm.u.s.resource.r.pci = &pci;
   393	
   394		/* call CreateAdapterObject on the relevant hpi module */
   395		hpi_send_recv_ex(&hm, &hr, HOWNER_KERNEL);
   396		if (hr.error)
   397			goto err;
   398	
   399		adapter_index = hr.u.s.adapter_index;
   400		adapter.adapter = hpi_find_adapter(adapter_index);
   401	
   402		if (prealloc_stream_buf) {
   403			adapter.p_buffer = vmalloc(prealloc_stream_buf);
   404			if (!adapter.p_buffer) {
   405				HPI_DEBUG_LOG(ERROR,
   406					"HPI could not allocate "
   407					"kernel buffer size %d\n",
   408					prealloc_stream_buf);
   409				goto err;
   410			}
   411		}
   412	
   413		hpi_init_message_response(&hm, &hr, HPI_OBJ_ADAPTER,
   414			HPI_ADAPTER_OPEN);
   415		hm.adapter_index = adapter.adapter->index;
   416		hpi_send_recv_ex(&hm, &hr, HOWNER_KERNEL);
   417	
   418		if (hr.error) {
   419			HPI_DEBUG_LOG(ERROR, "HPI_ADAPTER_OPEN failed, aborting\n");
   420			goto err;
   421		}
   422	
   423		/* Check if current mode == Low Latency mode */
   424		hpi_init_message_response(&hm, &hr, HPI_OBJ_ADAPTER,
   425			HPI_ADAPTER_GET_MODE);
   426		hm.adapter_index = adapter.adapter->index;
   427		hpi_send_recv_ex(&hm, &hr, HOWNER_KERNEL);
   428	
   429		if (!hr.error
   430			&& hr.u.ax.mode.adapter_mode == HPI_ADAPTER_MODE_LOW_LATENCY)
   431			low_latency_mode = 1;
   432		else
   433			dev_info(&pci_dev->dev,
   434				"Adapter at index %d is not in low latency mode\n",
   435				adapter.adapter->index);
   436	
   437		/* Check if IRQs are supported */
   438		hpi_init_message_response(&hm, &hr, HPI_OBJ_ADAPTER,
   439			HPI_ADAPTER_GET_PROPERTY);
   440		hm.adapter_index = adapter.adapter->index;
   441		hm.u.ax.property_set.property = HPI_ADAPTER_PROPERTY_SUPPORTS_IRQ;
   442		hpi_send_recv_ex(&hm, &hr, HOWNER_KERNEL);
   443		if (hr.error || !hr.u.ax.property_get.parameter1) {
   444			dev_info(&pci_dev->dev,
   445				"IRQs not supported by adapter at index %d\n",
   446				adapter.adapter->index);
   447		} else {
   448			irq_supported = 1;
   449		}
   450	
   451		/* WARNING can't init mutex in 'adapter'
   452		 * and then copy it to adapters[] ?!?!
   453		 */
   454		adapters[adapter_index] = adapter;
   455		mutex_init(&adapters[adapter_index].mutex);
   456		pci_set_drvdata(pci_dev, &adapters[adapter_index]);
   457	
   458		if (low_latency_mode && irq_supported) {
   459			if (!adapter.adapter->irq_query_and_clear) {
   460				dev_err(&pci_dev->dev,
   461					"no IRQ handler for adapter %d, aborting\n",
   462					adapter.adapter->index);
   463				goto err;
   464			}
   465	
   466			/* Disable IRQ generation on DSP side by setting the rate to 0 */
   467			hpi_init_message_response(&hm, &hr, HPI_OBJ_ADAPTER,
   468				HPI_ADAPTER_SET_PROPERTY);
   469			hm.adapter_index = adapter.adapter->index;
   470			hm.u.ax.property_set.property = HPI_ADAPTER_PROPERTY_IRQ_RATE;
   471			hm.u.ax.property_set.parameter1 = 0;
   472			hm.u.ax.property_set.parameter2 = 0;
   473			hpi_send_recv_ex(&hm, &hr, HOWNER_KERNEL);
   474			if (hr.error) {
   475				HPI_DEBUG_LOG(ERROR,
   476					"HPI_ADAPTER_GET_MODE failed, aborting\n");
   477				goto err;
   478			}
   479	
   480			/* Note: request_irq calls asihpi_isr here */
   481			if (request_irq(pci_dev->irq, asihpi_isr, IRQF_SHARED,
   482					"asihpi", &adapters[adapter_index])) {
   483				dev_err(&pci_dev->dev, "request_irq(%d) failed\n",
   484					pci_dev->irq);
   485				goto err;
   486			}
   487	
   488			adapters[adapter_index].interrupt_mode = 1;
   489	
   490			dev_info(&pci_dev->dev, "using irq %d\n", pci_dev->irq);
   491			adapters[adapter_index].irq = pci_dev->irq;
   492		} else {
   493			dev_info(&pci_dev->dev, "using polled mode\n");
   494		}
   495	
   496		dev_info(&pci_dev->dev, "probe succeeded for ASI%04X HPI index %d\n",
   497			 adapter.adapter->type, adapter_index);
   498	
   499		return 0;
   500	
   501	err:
   502		while (--idx >= 0) {
   503			if (pci.ap_mem_base[idx]) {
   504				iounmap(pci.ap_mem_base[idx]);
   505				pci.ap_mem_base[idx] = NULL;
   506			}
   507		}
   508	
   509		if (adapter.p_buffer) {
   510			adapter.buffer_size = 0;
   511			vfree(adapter.p_buffer);
   512		}
   513	
   514		HPI_DEBUG_LOG(ERROR, "adapter_probe failed\n");
   515		return -ENODEV;
   516	}
   517	

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

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