Re: [PATCH v1 4/4] virt: vmgenid: add support for devicetree bindings

From: kernel test robot
Date: Wed Mar 20 2024 - 12:54:33 EST

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@xxxxxxxxx/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@xxxxxxxxx/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@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202403210035.LODSw2s6-lkp@xxxxxxxxx/

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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