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Date: Thu, 21 Mar 2024 00:54:01 +0800
From: kernel test robot <lkp@intel.com>
To: Sudan Landge <sudanl@amazon.com>, tytso@mit.edu, Jason@zx2c4.com,
	robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org,
	conor+dt@kernel.org, sathyanarayanan.kuppuswamy@linux.intel.com,
	thomas.lendacky@amd.com, dan.j.williams@intel.com,
	devicetree@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev, graf@amazon.de,
	dwmw@amazon.co.uk, bchalios@amazon.es, xmarcalx@amazon.co.uk
Subject: Re: [PATCH v1 4/4] virt: vmgenid: add support for devicetree bindings
Message-ID: <202403210035.LODSw2s6-lkp@intel.com>
References: <20240319143253.22317-5-sudanl@amazon.com>
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In-Reply-To: <20240319143253.22317-5-sudanl@amazon.com>

Hi Sudan,

kernel test robot noticed the following build errors:

[auto build test ERROR on robh/for-next]
[also build test ERROR on linus/master v6.8 next-20240320]
[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#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Sudan-Landge/virt-vmgenid-rearrange-code-to-make-review-easier/20240319-223642
base:   https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git for-next
patch link:    https://lore.kernel.org/r/20240319143253.22317-5-sudanl%40amazon.com
patch subject: [PATCH v1 4/4] virt: vmgenid: add support for devicetree bindings
config: hexagon-allmodconfig (https://download.01.org/0day-ci/archive/20240321/202403210035.LODSw2s6-lkp@intel.com/config)
compiler: clang version 19.0.0git (https://github.com/llvm/llvm-project 8f68022f8e6e54d1aeae4ed301f5a015963089b7)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240321/202403210035.LODSw2s6-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202403210035.LODSw2s6-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from drivers/virt/vmgenid.c:16:
   In file included from include/linux/interrupt.h:11:
   In file included from include/linux/hardirq.h:11:
   In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1:
   In file included from include/asm-generic/hardirq.h:17:
   In file included from include/linux/irq.h:20:
   In file included from include/linux/io.h:13:
   In file included from arch/hexagon/include/asm/io.h:328:
   include/asm-generic/io.h:547:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
     547 |         val = __raw_readb(PCI_IOBASE + addr);
         |                           ~~~~~~~~~~ ^
   include/asm-generic/io.h:560:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
     560 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
         |                                                         ~~~~~~~~~~ ^
   include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
      37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
         |                                                   ^
   In file included from drivers/virt/vmgenid.c:16:
   In file included from include/linux/interrupt.h:11:
   In file included from include/linux/hardirq.h:11:
   In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1:
   In file included from include/asm-generic/hardirq.h:17:
   In file included from include/linux/irq.h:20:
   In file included from include/linux/io.h:13:
   In file included from arch/hexagon/include/asm/io.h:328:
   include/asm-generic/io.h:573:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
     573 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
         |                                                         ~~~~~~~~~~ ^
   include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
      35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
         |                                                   ^
   In file included from drivers/virt/vmgenid.c:16:
   In file included from include/linux/interrupt.h:11:
   In file included from include/linux/hardirq.h:11:
   In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1:
   In file included from include/asm-generic/hardirq.h:17:
   In file included from include/linux/irq.h:20:
   In file included from include/linux/io.h:13:
   In file included from arch/hexagon/include/asm/io.h:328:
   include/asm-generic/io.h:584:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
     584 |         __raw_writeb(value, PCI_IOBASE + addr);
         |                             ~~~~~~~~~~ ^
   include/asm-generic/io.h:594:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
     594 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
         |                                                       ~~~~~~~~~~ ^
   include/asm-generic/io.h:604:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
     604 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
         |                                                       ~~~~~~~~~~ ^
>> drivers/virt/vmgenid.c:79:38: error: incomplete definition of type 'struct acpi_device'
      79 |         status = acpi_evaluate_object(device->handle, "ADDR", NULL, &parsed);
         |                                       ~~~~~~^
   include/linux/acpi.h:795:8: note: forward declaration of 'struct acpi_device'
     795 | struct acpi_device;
         |        ^
   drivers/virt/vmgenid.c:96:28: error: incomplete definition of type 'struct acpi_device'
      96 |                                   devm_memremap(&device->dev, phys_addr, VMGENID_SIZE, MEMREMAP_WB)
         |                                                  ~~~~~~^
   include/linux/acpi.h:795:8: note: forward declaration of 'struct acpi_device'
     795 | struct acpi_device;
         |        ^
   drivers/virt/vmgenid.c:102:45: error: incomplete definition of type 'struct acpi_device'
     102 |         status = acpi_install_notify_handler(device->handle, ACPI_DEVICE_NOTIFY,
         |                                              ~~~~~~^
   include/linux/acpi.h:795:8: note: forward declaration of 'struct acpi_device'
     795 | struct acpi_device;
         |        ^
   6 warnings and 3 errors generated.


vim +79 drivers/virt/vmgenid.c

657fab4d1001e1 Sudan Landge       2024-03-19   69  
657fab4d1001e1 Sudan Landge       2024-03-19   70  static int vmgenid_add_acpi(struct device *dev, struct vmgenid_state *state)
657fab4d1001e1 Sudan Landge       2024-03-19   71  {
657fab4d1001e1 Sudan Landge       2024-03-19   72  	struct acpi_device *device = ACPI_COMPANION(dev);
af6b54e2b5baa5 Jason A. Donenfeld 2022-02-23   73  	struct acpi_buffer parsed = { ACPI_ALLOCATE_BUFFER };
af6b54e2b5baa5 Jason A. Donenfeld 2022-02-23   74  	union acpi_object *obj;
af6b54e2b5baa5 Jason A. Donenfeld 2022-02-23   75  	phys_addr_t phys_addr;
af6b54e2b5baa5 Jason A. Donenfeld 2022-02-23   76  	acpi_status status;
af6b54e2b5baa5 Jason A. Donenfeld 2022-02-23   77  	int ret = 0;
af6b54e2b5baa5 Jason A. Donenfeld 2022-02-23   78  
af6b54e2b5baa5 Jason A. Donenfeld 2022-02-23  @79  	status = acpi_evaluate_object(device->handle, "ADDR", NULL, &parsed);
af6b54e2b5baa5 Jason A. Donenfeld 2022-02-23   80  	if (ACPI_FAILURE(status)) {
af6b54e2b5baa5 Jason A. Donenfeld 2022-02-23   81  		ACPI_EXCEPTION((AE_INFO, status, "Evaluating ADDR"));
af6b54e2b5baa5 Jason A. Donenfeld 2022-02-23   82  		return -ENODEV;
af6b54e2b5baa5 Jason A. Donenfeld 2022-02-23   83  	}
af6b54e2b5baa5 Jason A. Donenfeld 2022-02-23   84  	obj = parsed.pointer;
af6b54e2b5baa5 Jason A. Donenfeld 2022-02-23   85  	if (!obj || obj->type != ACPI_TYPE_PACKAGE || obj->package.count != 2 ||
af6b54e2b5baa5 Jason A. Donenfeld 2022-02-23   86  	    obj->package.elements[0].type != ACPI_TYPE_INTEGER ||
af6b54e2b5baa5 Jason A. Donenfeld 2022-02-23   87  	    obj->package.elements[1].type != ACPI_TYPE_INTEGER) {
af6b54e2b5baa5 Jason A. Donenfeld 2022-02-23   88  		ret = -EINVAL;
af6b54e2b5baa5 Jason A. Donenfeld 2022-02-23   89  		goto out;
af6b54e2b5baa5 Jason A. Donenfeld 2022-02-23   90  	}
af6b54e2b5baa5 Jason A. Donenfeld 2022-02-23   91  
af6b54e2b5baa5 Jason A. Donenfeld 2022-02-23   92  	phys_addr = (obj->package.elements[0].integer.value << 0) |
af6b54e2b5baa5 Jason A. Donenfeld 2022-02-23   93  		    (obj->package.elements[1].integer.value << 32);
657fab4d1001e1 Sudan Landge       2024-03-19   94  
657fab4d1001e1 Sudan Landge       2024-03-19   95  	ret = setup_vmgenid_state(state,
657fab4d1001e1 Sudan Landge       2024-03-19   96  				  devm_memremap(&device->dev, phys_addr, VMGENID_SIZE, MEMREMAP_WB)
657fab4d1001e1 Sudan Landge       2024-03-19   97  				 );
657fab4d1001e1 Sudan Landge       2024-03-19   98  	if (ret)
657fab4d1001e1 Sudan Landge       2024-03-19   99  		goto out;
657fab4d1001e1 Sudan Landge       2024-03-19  100  
657fab4d1001e1 Sudan Landge       2024-03-19  101  	dev->driver_data = state;
657fab4d1001e1 Sudan Landge       2024-03-19  102  	status = acpi_install_notify_handler(device->handle, ACPI_DEVICE_NOTIFY,
657fab4d1001e1 Sudan Landge       2024-03-19  103  					     vmgenid_acpi_handler, dev);
657fab4d1001e1 Sudan Landge       2024-03-19  104  	if (ACPI_FAILURE(status)) {
657fab4d1001e1 Sudan Landge       2024-03-19  105  		dev_err(dev, "Failed to install acpi notify handler");
657fab4d1001e1 Sudan Landge       2024-03-19  106  		ret = -ENODEV;
657fab4d1001e1 Sudan Landge       2024-03-19  107  		dev->driver_data = NULL;
af6b54e2b5baa5 Jason A. Donenfeld 2022-02-23  108  		goto out;
af6b54e2b5baa5 Jason A. Donenfeld 2022-02-23  109  	}
657fab4d1001e1 Sudan Landge       2024-03-19  110  out:
657fab4d1001e1 Sudan Landge       2024-03-19  111  	ACPI_FREE(parsed.pointer);
657fab4d1001e1 Sudan Landge       2024-03-19  112  	return ret;
657fab4d1001e1 Sudan Landge       2024-03-19  113  }
af6b54e2b5baa5 Jason A. Donenfeld 2022-02-23  114  

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https://github.com/intel/lkp-tests/wiki