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: x86_64-randconfig-g001-20200208 (attached as .config) compiler: gcc-7 (Debian 7.5.0-3) 7.5.0 reproduce: # save the attached .config to linux build tree make ARCH=x86_64 If you fix the issue, kindly add following tag Reported-by: kbuild test robot All errors (new ones prefixed by >>): >> drivers/hid/usbhid/hid-core.c:80:5: error: unknown type name '_u8'; did you mean 'u8'? _u8 request, __u8 requesttype, __u16 value, ^~~ u8 drivers/hid/usbhid/hid-core.c:86:5: error: unknown type name '_u8'; did you mean 'u8'? _u8 request, __u8 requesttype, __u16 value, ^~~ u8 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'; did you mean 'usb_control_msg'? [-Werror=implicit-function-declaration] return usbhid_control_msg(dev, usb_sndctrlpipe(dev, 0), ^~~~~~~~~~~~~~~~~~ usb_control_msg cc1: some warnings being treated as errors vim +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 https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org