Re: [PATCH v1] Bluetooth: btintel: Add support to reset bluetooth via ACPI DSM

[kernel test robot <lkp@intel.com>]

Hi Kiran,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on bluetooth-next/master]
[also build test ERROR on linus/master v6.3-rc2 next-20230310]
[cannot apply to bluetooth/master]
[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/Kiran-K/Bluetooth-btintel-Add-support-to-reset-bluetooth-via-ACPI-DSM/20230313-230800
base:   https://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next.git master
patch link:    https://lore.kernel.org/r/20230313151549.15791-1-kiran.k%40intel.com
patch subject: [PATCH v1] Bluetooth: btintel: Add support to reset bluetooth via ACPI DSM
config: hexagon-randconfig-r045-20230313 (https://download.01.org/0day-ci/archive/20230314/202303140618.ncRRCBV2-lkp@intel.com/config)
compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project 67409911353323ca5edf2049ef0df54132fa1ca7)
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/intel-lab-lkp/linux/commit/6a89221ddaa7b13fa1da2d345e61b2bf8efd5a87
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Kiran-K/Bluetooth-btintel-Add-support-to-reset-bluetooth-via-ACPI-DSM/20230313-230800
        git checkout 6a89221ddaa7b13fa1da2d345e61b2bf8efd5a87
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon SHELL=/bin/bash drivers/bluetooth/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202303140618.ncRRCBV2-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from drivers/bluetooth/btintel.c:11:
   In file included from include/linux/regmap.h:20:
   In file included from include/linux/iopoll.h:14:
   In file included from include/linux/io.h:13:
   In file included from arch/hexagon/include/asm/io.h:334:
   include/asm-generic/io.h:547:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           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]
           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'
   #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
                                                     ^
   In file included from drivers/bluetooth/btintel.c:11:
   In file included from include/linux/regmap.h:20:
   In file included from include/linux/iopoll.h:14:
   In file included from include/linux/io.h:13:
   In file included from arch/hexagon/include/asm/io.h:334:
   include/asm-generic/io.h:573:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           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'
   #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
                                                     ^
   In file included from drivers/bluetooth/btintel.c:11:
   In file included from include/linux/regmap.h:20:
   In file included from include/linux/iopoll.h:14:
   In file included from include/linux/io.h:13:
   In file included from arch/hexagon/include/asm/io.h:334:
   include/asm-generic/io.h:584:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           __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]
           __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]
           __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
                                                         ~~~~~~~~~~ ^
>> drivers/bluetooth/btintel.c:2450:7: error: call to undeclared function 'acpi_has_method'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
           if (!acpi_has_method(handle, "_PRR")) {
                ^
   drivers/bluetooth/btintel.c:2450:7: note: did you mean 'acpi_has_watchdog'?
   include/linux/acpi.h:1442:20: note: 'acpi_has_watchdog' declared here
   static inline bool acpi_has_watchdog(void) { return false; }
                      ^
   6 warnings and 1 error generated.


vim +/acpi_has_method +2450 drivers/bluetooth/btintel.c

  2430	
  2431	static void btintel_set_dsm_reset_method(struct hci_dev *hdev,
  2432						 struct intel_version_tlv *ver_tlv)
  2433	{
  2434		struct btintel_data *data = hci_get_priv(hdev);
  2435		acpi_handle handle = ACPI_HANDLE(GET_HCIDEV_DEV(hdev));
  2436		u8 reset_payload[4] = {0x01, 0x00, 0x01, 0x00};
  2437		union acpi_object *obj, argv4;
  2438		enum {
  2439			RESET_TYPE_WDISABLE2,
  2440			RESET_TYPE_VSEC
  2441		};
  2442	
  2443		handle = ACPI_HANDLE(GET_HCIDEV_DEV(hdev));
  2444	
  2445		if (!handle) {
  2446			bt_dev_dbg(hdev, "No support for bluetooth device in ACPI firmware");
  2447			return;
  2448		}
  2449	
> 2450		if (!acpi_has_method(handle, "_PRR")) {
  2451			bt_dev_err(hdev, "No support for _PRR ACPI method");
  2452			return;
  2453		}
  2454	
  2455		switch (ver_tlv->cnvi_top & 0xfff) {
  2456		case 0x910: /* GalePeak2 */
  2457			reset_payload[2] = RESET_TYPE_VSEC;
  2458			break;
  2459		default:
  2460			/* WDISABLE2 is the default reset method */
  2461			reset_payload[2] = RESET_TYPE_WDISABLE2;
  2462	
  2463			if (!acpi_check_dsm(handle, &btintel_guid_dsm, 0,
  2464					    BIT(DSM_SET_WDISABLE2_DELAY))) {
  2465				bt_dev_err(hdev, "No dsm support to set reset delay");
  2466				return;
  2467			}
  2468			argv4.integer.type = ACPI_TYPE_INTEGER;
  2469			/* delay required to toggle BT power */
  2470			argv4.integer.value = 160;
  2471			obj = acpi_evaluate_dsm(handle, &btintel_guid_dsm, 0,
  2472						DSM_SET_WDISABLE2_DELAY, &argv4);
  2473			if (!obj) {
  2474				bt_dev_err(hdev, "Failed to call dsm to set reset delay");
  2475				return;
  2476			}
  2477			ACPI_FREE(obj);
  2478		}
  2479	
  2480		bt_dev_info(hdev, "DSM reset method type: 0x%02x", reset_payload[2]);
  2481	
  2482		if (!acpi_check_dsm(handle, &btintel_guid_dsm, 0,
  2483				    DSM_SET_RESET_METHOD)) {
  2484			bt_dev_warn(hdev, "No support for dsm to set reset method");
  2485			return;
  2486		}
  2487		argv4.buffer.type = ACPI_TYPE_BUFFER;
  2488		argv4.buffer.length = sizeof(reset_payload);
  2489		argv4.buffer.pointer = reset_payload;
  2490	
  2491		obj = acpi_evaluate_dsm(handle, &btintel_guid_dsm, 0,
  2492					DSM_SET_RESET_METHOD, &argv4);
  2493		if (!obj) {
  2494			bt_dev_err(hdev, "Failed to call dsm to set reset method");
  2495			return;
  2496		}
  2497		ACPI_FREE(obj);
  2498		data->acpi_reset_method = btintel_acpi_reset_method;
  2499	}
  2500	

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