Hi Lauri,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on linus/master]
[also build test ERROR on v5.5 next-20200207]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url:    https://github.com/0day-ci/linux/commits/Lauri-Jakku/HID-random-timeout-failures-tackle-try/20200208-185809
base:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git f757165705e92db62f85a1ad287e9251d1f2cd82
config: mips-randconfig-a001-20200208 (attached as .config)
compiler: mipsel-linux-gcc (GCC) 5.5.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        GCC_VERSION=5.5.0 make.cross ARCH=mips 

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

All errors (new ones prefixed by >>):

>> drivers/hid/usbhid/hid-core.c:80:5: error: unknown type name '_u8'
        _u8 request, __u8 requesttype, __u16 value,
        ^
   drivers/hid/usbhid/hid-core.c:86:5: error: unknown type name '_u8'
        _u8 request, __u8 requesttype, __u16 value,
        ^
   drivers/hid/usbhid/hid-core.c: In function 'hid_set_idle':
>> drivers/hid/usbhid/hid-core.c:691:9: error: implicit declaration of function 'usbhid_control_msg' [-Werror=implicit-function-declaration]
     return usbhid_control_msg(dev, usb_sndctrlpipe(dev, 0),
            ^
   cc1: some warnings being treated as errors

vim +/_u8 +80 drivers/hid/usbhid/hid-core.c

    64	
    65	/* Quirks specified at module load time */
    66	static char *quirks_param[MAX_USBHID_BOOT_QUIRKS];
    67	module_param_array_named(quirks, quirks_param, charp, NULL, 0444);
    68	MODULE_PARM_DESC(quirks, "Add/modify USB HID quirks by specifying "
    69			" quirks=vendorID:productID:quirks"
    70			" where vendorID, productID, and quirks are all in"
    71			" 0x-prefixed hex");
    72	/*
    73	 * Input submission and I/O error handler.
    74	 */
    75	static void hid_io_error(struct hid_device *hid);
    76	static int hid_submit_out(struct hid_device *hid);
    77	static int hid_submit_ctrl(struct hid_device *hid);
    78	static void hid_cancel_delayed_stuff(struct usbhid_device *usbhid);
    79	static int usbhid_control_msg(struct usb_device *dev, unsigned int pipe,
  > 80					_u8 request, __u8 requesttype, __u16 value,
    81					__u16 index, void *data, __u16 size,
    82					int timeout);
    83	
    84	

---
0-DAY CI Kernel Test Service, Intel Corporation
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