Fix build error under Linux 4.10

[ahresse]

An error was raised while compiling with Ubuntu 16.04 (kernel 4.10.0-32-generic):
error: implicit declaration of function ‘is_compat_task‘

[LuxMiranda]

Had the same issue on Ubuntu 16.04 kernel 4.10.0-32-generic. This fix worked in allowing me to build!

[sloretz]

Thanks for the pull request! Looks like the travis job is fubar, but that's not related to this pull request. It will be a few days before I have time to test this.

[sloretz]

Thanks for the pull request! For compatibility with older 4 series kernels would you mind removing the definition of is_compat_task and adding #include <linux/compat.h> to the file ./include/drv_types_linux.h instead?

[sloretz]

On kernel 4.4 I get a build error complaining about this function being redefined. Looks like kernel 4.10 has a header with a macro that defines this function. Would you mind changing the patch to remove this function, and add an #include <linux/compat.h> instead?

[jamesray1]

#6

[jamesray1]

In the meantime (one month after this PR) I'll try cloning ahresse:master.

It also didn't work.

[jamesray1]

https://github.com/ahresse/rtl8811au/wiki

Testing on Ubuntu 17.04 x64 here.

It seemed to install but unfortunately it didn't work as no WiFi networks appear, while they do in Windows on the same computer, and on my phone. I also tried to manually enter a WiFi connection, entering the SSID, WPA2/PSK passkey and MAC address, but it has never connected.

[jamesray1]

I guess that I'll have to buy a Ubuntu compatible dongle...

[sloretz]

@jamesray1 Thanks for your feedback. You may want to try the code at https://github.com/diederikdehaas/rtl8812AU

A year ago or so I bought a wifi dongle, and it came with a driver that didn't build on ubuntu xenial. I fixed the issues and uploaded it here in hopes that it would be useful to others like yourself. I no longer use a wifi dongle, so I'm probably not going to write more code for this repo. If you would be willing to fix issues you encounter (start with adding #include <linux/compat.h> to drv_types_linux.h to fix the is_compat_task issue) I would be happy to merge your code so others can take advantage of it.

[jamesray1]

I bought another dongle that's compatible with Linux. I'll see how that goes. https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com.au%2Fulk%2Fitm%2F263200219618

[rstecca]

This might be redundant but I'm just confirming that this worked for me.
in the files where the error came from I added the following lines:

static inline bool is_compat_task(void) { return in_ia32_syscall() || in_x32_syscall(); }

The files were ./os_dep/linux/ioctl_linux.c and ./os_dep/linux/rtw_android.c

This makes the build process finish smoothly with the current master version.