Fingerprint u.a.u 4500 with ubuntu 18.04

问题

i want to install the drivers for u are u 4500, but it only can be compiled with old kernel versions (2.6 to 3.2) , can you help me to install the drivers on ubuntu with last kernel version.

The sample application of fingerprint cant recognize the device.

回答1:

I am not sure what problems you are having, but I could compile and install the driver under Ubuntu 18.04. I did get a few errors during compilation, which I fixed as follows:

Error 1:

/opt/DigitalPersona/urusdk-linux/Linux/drivers/source/usbdpfp/usbdpfp.h:186:5: error: unknown type name ‘wait_queue_t’ /opt/DigitalPersona/urusdk-linux/Linux/drivers/source/usbdpfp/usbdpfp.c:606:9: error: implicit declaration of function ‘copy_from_user’; did you mean ‘raw_copy_from_user’? [-Werror=implicit-function-declaration] --- and a bunch of related compilation errors---

Solution: In /opt/DigitalPersona/urusdk-linux/Linux/drivers/source/usbdpfp/usbdpfp.h, replace

wait_queue_t                    wait;

with

wait_queue_entry_t                    wait;

Error 2:

opt/DigitalPersona/urusdk-linux/Linux/drivers/source/usbdpfp/usbdpfp.c:2186:22: error: implicit declaration of function ‘signal_pending’; did you mean ‘timer_pending’? [-Werror=implicit-function-declaration]

Solution:

a) In /opt/DigitalPersona/urusdk-linux/Linux/drivers/source/usbdpfp/usbdpfp.h, replace:

 #include <linux/sched.h>

with

#include <linux/sched/signal.h>

b) In /opt/DigitalPersona/urusdk-linux/Linux/drivers/source/usbdpfp/usbdpfp.c, replace:

#include <asm/uaccess.h>

with

 #include <linux/uaccess.h>

Now compile and install the module:

 $ /opt/DigitalPersona/urusdk-linux/redist/usbdpfp start

$ lsmod |grep dpfp
mod_usbdpfp            45056  0
usbcore               286720  7 mod_usbdpfp,usbhid,usb_storage,ehci_hcd,btusb,uas,ehci_pci

Good luck.

来源：https://stackoverflow.com/questions/51995086/fingerprint-u-a-u-4500-with-ubuntu-18-04