On Wed, Feb 17, 2021 at 10:49:46AM +0300, Dan Carpenter wrote:
> [ Why is linux-mm CC'd on these patches??? - dan ]
sorry for late, Hi Dan, FYI, we have defined related rule like mail cc
in repo definition of linux-next. This can be found at
https://github.com/intel/lkp-tests/blob/master/repo/linux/linux-next,
which could be a requirement in early days.

> 
> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git  
> master
> head:   6553715b6db5ff5d4898895dad1b2926cfe406cf
> commit: fc342c4dc408754f50f19dc832152fbb4b73f1e6 [7132/11526] Bluetooth: 
> btusb: Add protocol support for MediaTek MT7921U USB devices
> config: parisc-randconfig-m031-20210216 (attached as .config)
> compiler: hppa-linux-gcc (GCC) 9.3.0
> 
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <[email protected]>
> Reported-by: Dan Carpenter <[email protected]>
> 
> New smatch warnings:
> drivers/bluetooth/btusb.c:3775 btusb_mtk_setup() error: uninitialized symbol 
> 'fw_version'.
> 
> Old smatch warnings:
> drivers/bluetooth/btusb.c:2201 btusb_setup_intel() warn: inconsistent 
> indenting
> 
> vim +/fw_version +3775 drivers/bluetooth/btusb.c
> 
> a1c49c434e15050 Sean Wang 2019-06-02  3729  static int btusb_mtk_setup(struct 
> hci_dev *hdev)
> a1c49c434e15050 Sean Wang 2019-06-02  3730  {
> a1c49c434e15050 Sean Wang 2019-06-02  3731    struct btusb_data *data = 
> hci_get_drvdata(hdev);
> a1c49c434e15050 Sean Wang 2019-06-02  3732    struct btmtk_hci_wmt_params 
> wmt_params;
> a1c49c434e15050 Sean Wang 2019-06-02  3733    ktime_t calltime, delta, 
> rettime;
> a1c49c434e15050 Sean Wang 2019-06-02  3734    struct btmtk_tci_sleep 
> tci_sleep;
> a1c49c434e15050 Sean Wang 2019-06-02  3735    unsigned long long duration;
> a1c49c434e15050 Sean Wang 2019-06-02  3736    struct sk_buff *skb;
> a1c49c434e15050 Sean Wang 2019-06-02  3737    const char *fwname;
> a1c49c434e15050 Sean Wang 2019-06-02  3738    int err, status;
> a1c49c434e15050 Sean Wang 2019-06-02  3739    u32 dev_id;
> fc342c4dc408754 Mark Chen 2021-02-02  3740    char fw_bin_name[64];
> fc342c4dc408754 Mark Chen 2021-02-02  3741    u32 fw_version;
> a1c49c434e15050 Sean Wang 2019-06-02  3742    u8 param;
> a1c49c434e15050 Sean Wang 2019-06-02  3743  
> a1c49c434e15050 Sean Wang 2019-06-02  3744    calltime = ktime_get();
> a1c49c434e15050 Sean Wang 2019-06-02  3745  
> 48c13301e6baba5 Mark Chen 2021-02-02  3746    err = btusb_mtk_id_get(data, 
> 0x80000008, &dev_id);
> a1c49c434e15050 Sean Wang 2019-06-02  3747    if (err < 0) {
> a1c49c434e15050 Sean Wang 2019-06-02  3748            bt_dev_err(hdev, 
> "Failed to get device id (%d)", err);
> a1c49c434e15050 Sean Wang 2019-06-02  3749            return err;
> a1c49c434e15050 Sean Wang 2019-06-02  3750    }
> a1c49c434e15050 Sean Wang 2019-06-02  3751  
> fc342c4dc408754 Mark Chen 2021-02-02  3752    if (!dev_id) {
> fc342c4dc408754 Mark Chen 2021-02-02  3753            err = 
> btusb_mtk_id_get(data, 0x70010200, &dev_id);
> fc342c4dc408754 Mark Chen 2021-02-02  3754            if (err < 0) {
> fc342c4dc408754 Mark Chen 2021-02-02  3755                    
> bt_dev_err(hdev, "Failed to get device id (%d)", err);
> fc342c4dc408754 Mark Chen 2021-02-02  3756                    return err;
> fc342c4dc408754 Mark Chen 2021-02-02  3757            }
> fc342c4dc408754 Mark Chen 2021-02-02  3758            err = 
> btusb_mtk_id_get(data, 0x80021004, &fw_version);
> fc342c4dc408754 Mark Chen 2021-02-02  3759            if (err < 0) {
> fc342c4dc408754 Mark Chen 2021-02-02  3760                    
> bt_dev_err(hdev, "Failed to get fw version (%d)", err);
> fc342c4dc408754 Mark Chen 2021-02-02  3761                    return err;
> fc342c4dc408754 Mark Chen 2021-02-02  3762            }
> fc342c4dc408754 Mark Chen 2021-02-02  3763    }
> 
> "fw_version" not initialized on else path.
> 
> fc342c4dc408754 Mark Chen 2021-02-02  3764  
> a1c49c434e15050 Sean Wang 2019-06-02  3765    switch (dev_id) {
> 9ce67c3235be71e Sean Wang 2019-06-02  3766    case 0x7663:
> 9ce67c3235be71e Sean Wang 2019-06-02  3767            fwname = 
> FIRMWARE_MT7663;
> 9ce67c3235be71e Sean Wang 2019-06-02  3768            break;
> a1c49c434e15050 Sean Wang 2019-06-02  3769    case 0x7668:
> a1c49c434e15050 Sean Wang 2019-06-02  3770            fwname = 
> FIRMWARE_MT7668;
> a1c49c434e15050 Sean Wang 2019-06-02  3771            break;
> fc342c4dc408754 Mark Chen 2021-02-02  3772    case 0x7961:
> fc342c4dc408754 Mark Chen 2021-02-02  3773            snprintf(fw_bin_name, 
> sizeof(fw_bin_name),
> fc342c4dc408754 Mark Chen 2021-02-02  3774                    
> "mediatek/BT_RAM_CODE_MT%04x_1_%x_hdr.bin",
> fc342c4dc408754 Mark Chen 2021-02-02 @3775                     dev_id & 
> 0xffff, (fw_version & 0xff) + 1);
>                                                                               
>      ^^^^^^^^^^
> 
> fc342c4dc408754 Mark Chen 2021-02-02  3776            err = 
> btusb_mtk_setup_firmware_79xx(hdev, fw_bin_name);
> fc342c4dc408754 Mark Chen 2021-02-02  3777  
> fc342c4dc408754 Mark Chen 2021-02-02  3778            /* Enable Bluetooth 
> protocol */
> fc342c4dc408754 Mark Chen 2021-02-02  3779            param = 1;
> fc342c4dc408754 Mark Chen 2021-02-02  3780            wmt_params.op = 
> BTMTK_WMT_FUNC_CTRL;
> fc342c4dc408754 Mark Chen 2021-02-02  3781            wmt_params.flag = 0;
> fc342c4dc408754 Mark Chen 2021-02-02  3782            wmt_params.dlen = 
> sizeof(param);
> fc342c4dc408754 Mark Chen 2021-02-02  3783            wmt_params.data = 
> &param;
> fc342c4dc408754 Mark Chen 2021-02-02  3784            wmt_params.status = 
> NULL;
> fc342c4dc408754 Mark Chen 2021-02-02  3785  
> fc342c4dc408754 Mark Chen 2021-02-02  3786            err = 
> btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
> fc342c4dc408754 Mark Chen 2021-02-02  3787            if (err < 0) {
> fc342c4dc408754 Mark Chen 2021-02-02  3788                    
> bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
> 
> ---
> 0-DAY CI Kernel Test Service, Intel Corporation
> https://lists.01.org/hyperkitty/list/[email protected] 


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