Trying to add keyboard to gadget about hackpi HOT 4 OPEN

mkdir -p functions/hid.usb0
echo 1 > functions/hid.usb0/protocol
echo 1 > functions/hid.usb0/subclass
echo 8 > functions/hid.usb0/report_length
echo -ne \\x05\\x01\\x09\\x06\\xa1\\x01\\x05\\x07\\x19\\xe0\\x29\\xe7\\x15\\x00\\x25\\x01\\x75\\x01\\x95\\x08\\x81\\x02\\x95\\x01\\x75\\x08\\x81\\x03\\x95\\x05\\x75\\x01\\x05\\x08\\x19\\x01\\x29\\x05\\x91\\x02\\x95\\x01\\x75\\x03\\x91\\x03\\x95\\x06\\x75\\x08\\x15\\x00\\x25\\x65\\x05\\x07\\x19\\x00\\x29\\x65\\x81\\x00\\xc0 > functions/hid.usb0/report_desc


# Link everything and bind the USB device
if [ "$OS" != "MacOs" ]; then
        ln -s configs/c.1 os_desc
        ln -s functions/rndis.usb0 configs/c.1
fi

ln -s functions/ecm.usb0 configs/c.2
ln -s functions/acm.gs0 configs/c.2
ln -s functions/hid.usb0 configs/c.2

Jun  1 19:58:48 raspberrypi kernel: [   24.081945] usb0: HOST MAC 48:6f:73:74:50:43
Jun  1 19:58:48 raspberrypi kernel: [   24.082872] usb0: MAC 42:61:64:55:53:42
Jun  1 19:58:49 raspberrypi kernel: [   24.102106] usb1: HOST MAC 48:6f:73:74:50:43
Jun  1 19:58:49 raspberrypi kernel: [   24.103156] usb1: MAC 42:61:64:55:53:43
Jun  1 19:58:49 raspberrypi kernel: [   24.124311] Modules linked in: usb_f_hid usb_f_acm u_serial usb_f_rndis bnep hci_uart btbcm bluetooth bridge stp llc brcmfmac brcmutil snd_bcm2835 snd_pcm cfg80211 snd_timer rfkill snd bcm2835_gpiomem uio_pdrv_genirq fixed uio usb_f_ecm u_ether libcomposite dwc2 udc_core ipv6 [last unloaded: usb_f_rndis]
Jun  1 19:58:49 raspberrypi kernel: [   24.136718] CPU: 0 PID: 814 Comm: ls Not tainted 4.9.24+ #993
Jun  1 19:58:49 raspberrypi kernel: [   24.142517] Hardware name: BCM2835
Jun  1 19:58:49 raspberrypi kernel: [   24.148565] task: d8a48da0 task.stack: da704000
Jun  1 19:58:49 raspberrypi kernel: [   24.154539] PC is at alloc_ep_req+0x30/0xa8 [libcomposite]
Jun  1 19:58:49 raspberrypi kernel: [   24.160543] LR is at 0x0
Jun  1 19:58:49 raspberrypi kernel: [   24.166582] pc : [<bf0b6fe8>]    lr : [<00000000>]    psr: a0000013
Jun  1 19:58:49 raspberrypi kernel: [   24.166582] sp : da705d98  ip : 00000000  fp : da705db4
Jun  1 19:58:49 raspberrypi kernel: [   24.178603] r10: da65c2c8  r9 : da462cc4  r8 : da65c270
Jun  1 19:58:49 raspberrypi kernel: [   24.184763] r7 : da462ca8  r6 : d89d6e00  r5 : da65d890  r4 : 00000008
Jun  1 19:58:49 raspberrypi kernel: [   24.190610] r3 : d89d6e34  r2 : 00000000  r1 : 00000000  r0 : d89d6e00
Jun  1 19:58:49 raspberrypi kernel: [   24.196724] Flags: NzCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment user
Jun  1 19:58:49 raspberrypi kernel: [   24.202880] Control: 00c5387d  Table: 189f4008  DAC: 00000055
Jun  1 19:58:49 raspberrypi kernel: [   24.353740] [<bf0b6fe8>] (alloc_ep_req [libcomposite]) from [<bf4437f0>] (hidg_bind+0xa0/0x258 [usb_f_hid])
Jun  1 19:58:49 raspberrypi kernel: [   24.360802] [<bf4437f0>] (hidg_bind [usb_f_hid]) from [<bf0b20c0>] (usb_add_function+0x7c/0x164 [libcomposite])
Jun  1 19:58:49 raspberrypi kernel: [   24.368216] [<bf0b20c0>] (usb_add_function [libcomposite]) from [<bf0b6384>] (configfs_composite_bind+0x24c/0x360 [libcomposite])
Jun  1 19:58:49 raspberrypi kernel: [   24.375577] [<bf0b6384>] (configfs_composite_bind [libcomposite]) from [<bf079838>] (udc_bind_to_driver+0x3c/0xe0 [udc_core])
Jun  1 19:58:49 raspberrypi kernel: [   24.383313] [<bf079838>] (udc_bind_to_driver [udc_core]) from [<bf079d68>] (usb_gadget_probe_driver+0x100/0x14c [udc_core])
Jun  1 19:58:49 raspberrypi kernel: [   24.390890] [<bf079d68>] (usb_gadget_probe_driver [udc_core]) from [<bf0b6d10>] (gadget_dev_desc_UDC_store+0xb0/0xcc [libcomposite])
Jun  1 19:58:49 raspberrypi kernel: [   24.398825] [<bf0b6d10>] (gadget_dev_desc_UDC_store [libcomposite]) from [<c01baf30>] (configfs_write_file+0xd4/0x17c)
Jun  1 19:58:49 raspberrypi kernel: [   24.406483] [<c01baf30>] (configfs_write_file) from [<c0143dec>] (__vfs_write+0x38/0x128)
Jun  1 19:58:49 raspberrypi kernel: [   24.414438] [<c0143dec>] (__vfs_write) from [<c0144c24>] (vfs_write+0xb0/0x1bc)
Jun  1 19:58:49 raspberrypi kernel: [   24.422137] [<c0144c24>] (vfs_write) from [<c0145d34>] (SyS_write+0x54/0xb0)
Jun  1 19:58:49 raspberrypi kernel: [   24.430213] [<c0145d34>] (SyS_write) from [<c000fe40>] (ret_fast_syscall+0x0/0x1c)
Jun  1 19:58:49 raspberrypi kernel: [   24.446310] ---[ end trace 29bcb98f1e6e36e0 ]---