Hi,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on bluetooth/master]
[also build test ERROR on bluetooth-next/master linus/master v6.0-rc7 next-20220929]
[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/sean-wang-mediatek-com/Bluetooth-btusb-mediatek-use-readx_poll_timeout-instead-of-open-coding/20220930-082512
base:   https://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth.git master
config: arm-randconfig-r033-20220925
compiler: arm-linux-gnueabi-gcc (GCC) 12.1.0
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/intel-lab-lkp/linux/commit/046dccfde843fe56b2ad741a42d972365bb70b03
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review sean-wang-mediatek-com/Bluetooth-btusb-mediatek-use-readx_poll_timeout-instead-of-open-coding/20220930-082512
        git checkout 046dccfde843fe56b2ad741a42d972365bb70b03
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash drivers/bluetooth/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   drivers/bluetooth/btmtk.c: In function 'btmtk_coredump_notify':
   drivers/bluetooth/btmtk.c:111:14: error: 'HCI_DEVCOREDUMP_ACTIVE' undeclared (first use in this function); did you mean 'BTMTK_COREDUMP_ACTIVE'?
     111 |         case HCI_DEVCOREDUMP_ACTIVE:
         |              ^~~~~~~~~~~~~~~~~~~~~~
         |              BTMTK_COREDUMP_ACTIVE
   drivers/bluetooth/btmtk.c:111:14: note: each undeclared identifier is reported only once for each function it appears in
   drivers/bluetooth/btmtk.c:114:14: error: 'HCI_DEVCOREDUMP_TIMEOUT' undeclared (first use in this function); did you mean 'HCI_DISCONN_TIMEOUT'?
     114 |         case HCI_DEVCOREDUMP_TIMEOUT:
         |              ^~~~~~~~~~~~~~~~~~~~~~~
         |              HCI_DISCONN_TIMEOUT
   drivers/bluetooth/btmtk.c:115:14: error: 'HCI_DEVCOREDUMP_ABORT' undeclared (first use in this function)
     115 |         case HCI_DEVCOREDUMP_ABORT:
         |              ^~~~~~~~~~~~~~~~~~~~~
   drivers/bluetooth/btmtk.c:116:14: error: 'HCI_DEVCOREDUMP_DONE' undeclared (first use in this function)
     116 |         case HCI_DEVCOREDUMP_DONE:
         |              ^~~~~~~~~~~~~~~~~~~~
   drivers/bluetooth/btmtk.c: In function 'btmtk_register_coredump':
   drivers/bluetooth/btmtk.c:376:9: error: implicit declaration of function 'hci_devcoredump_register' [-Werror=implicit-function-declaration]
     376 |         hci_devcoredump_register(hdev, btmtk_coredump, btmtk_coredump_hdr,
         |         ^~~~~~~~~~~~~~~~~~~~~~~~
   drivers/bluetooth/btmtk.c: In function 'btmtk_process_coredump':
   drivers/bluetooth/btmtk.c:393:23: error: implicit declaration of function 'hci_devcoredump_init' [-Werror=implicit-function-declaration]
     393 |                 err = hci_devcoredump_init(hdev, 1024000);
         |                       ^~~~~~~~~~~~~~~~~~~~
>> drivers/bluetooth/btmtk.c:397:44: error: 'struct hci_dev' has no member named 'dump'
     397 |                 schedule_delayed_work(&hdev->dump.dump_timeout,
         |                                            ^~
   drivers/bluetooth/btmtk.c:402:23: error: implicit declaration of function 'hci_devcoredump_append' [-Werror=implicit-function-declaration]
     402 |                 err = hci_devcoredump_append(hdev, skb);
         |                       ^~~~~~~~~~~~~~~~~~~~~~
   drivers/bluetooth/btmtk.c:409:25: error: implicit declaration of function 'hci_devcoredump_complete' [-Werror=implicit-function-declaration]
     409 |                         hci_devcoredump_complete(hdev);
         |                         ^~~~~~~~~~~~~~~~~~~~~~~~
   cc1: some warnings being treated as errors

Kconfig warnings: (for reference only)
   WARNING: unmet direct dependencies detected for TEGRA20_APB_DMA
   Depends on [n]: DMADEVICES [=n] && (ARCH_TEGRA [=y] || COMPILE_TEST [=y])
   Selected by [y]:
   - SOC_TEGRA_FUSE [=y] && ARCH_TEGRA [=y] && ARCH_TEGRA_2x_SOC [=y]


vim +397 drivers/bluetooth/btmtk.c

   380	
   381	int btmtk_process_coredump(struct hci_dev *hdev, struct sk_buff *skb)
   382	{
   383		int err;
   384	
   385		if (!IS_ENABLED(CONFIG_DEV_COREDUMP))
   386			return 0;
   387	
   388		switch (coredump_info.state) {
   389		case BTMTK_COREDUMP_DISABLED:
   390			err = -EINVAL;
   391			break;
   392		case BTMTK_COREDUMP_INIT:
   393			err = hci_devcoredump_init(hdev, 1024000);
   394			if (err < 0)
   395				break;
   396			/* It is supposed coredump can be done within 5 seconds */
 > 397			schedule_delayed_work(&hdev->dump.dump_timeout,
   398					      msecs_to_jiffies(5000));
   399			fallthrough;
   400		case BTMTK_COREDUMP_ACTIVE:
   401		default:
   402			err = hci_devcoredump_append(hdev, skb);
   403			if (err < 0)
   404				break;
   405	
   406			if (skb->len > 12 &&
   407			    !strncmp((char *)&skb->data[skb->len - 13],
   408				     MTK_COREDUMP_END, 12))
   409				hci_devcoredump_complete(hdev);
   410	
   411			break;
   412		}
   413	
   414		if (err < 0) {
   415			coredump_info.state = BTMTK_COREDUMP_DISABLED;
   416			kfree_skb(skb);
   417		}
   418	
   419		return err;
   420	}
   421	EXPORT_SYMBOL_GPL(btmtk_process_coredump);
   422	

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