错误：未声明“ usb_serial_probe”，设备驱动程序中的linux 3.10

Question

I am trying to compile a Linux drived for USB-to-Serial device and getting error

 /root/moxa_usb_to_serial/mxu11x0/driver/mxu11x0.c:307: error: ‘usb_serial_probe’ undeclared here (not in a function)
 /root/moxa_usb_to_serial/mxu11x0/driver/mxu11x0.c:308: error: ‘usb_serial_disconnect’ undeclared here (not in a function)

I have linux

 Linux host 3.10.33-rt32.34.el6rt.x86_64 #1 SMP PREEMPT RT Wed May 28 09:57:12 CEST 2014 x86_64 x86_64 x86_64 GNU/Linux

The manufacturer of driver actually warns that above 3.4 driver might not be compartible. However driver itself is rather small and I believe I can make some trivial fixes. How this can be solved?

Answer 1

The manufacturer of driver actually warns that above 3.4 driver might not be compartible.

A quick check of one symbol indicates that this aspect of the kernel USB serial interface has changed. In 3.10 usb_serial_probe() was made static (see its 3.10 cross reference ), so it's no longer part of the kernel USB interface. There's no need to go looking for the "proper" header file to include.
Your presumption about making "some trivial fixes" may be hasty.

You need to get the 3.4 Linux source tree and find examples of the USB serial interface.
Here's a list of the 3.4 drivers that use usb_serial_probe() .
You need to find a 3.4 driver that resembles the driver that you're trying to port, eg uses usb_serial_probe() and usb_serial_disconnect() such as usb/serial/generic.c .
Then find that version of the driver in the 3.10 source, and see how that driver has evolved since 3.4 (use diff or sdiff ).
Those changes will be a guide to what has to be modified in your driver.

Answer 2

I have that symbols defined in a file called usb-serial.h, in a driver for quite another interface. But it gives me the impression you are not including the right header files for the compilation of your driver.

So, I'd suggest you do a search in all .h files in your driver directory, and look for a function called usb_serial_probe. If you find it, check if you are correctly adding the file in your compile command.

Are you using a manufacturer-provided Makefile?