I'm running into an identical issue...did you find a solution?
<osmarcf@...> writes:
>
> I am trying to compile a USB serial driver (ftdi_sio.ko), so the tablet
will recognize FTXXX devices. On my
> own, I am not having success.
>
> The tablet I have has an A33 processor (Model V11; Processor type
QuadCore-A33; Android 4.4.2; Firmware
> v2.0; Kernel version 3.4.39 ytx <at> Android #124 Wed Dec 10 12:06:58 CST
2014; Version D35r_y3-eng 4.4.2
> KVT49L 20141211 test-keys).
>
> I downloaded the linux-3.4-sunxi kernel headers/sources and use the
following commands to compile:
> ---
> make clean
> make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- sun8iw5p1smp_defconfig
> make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- menuconfig
> --- at this point I modularize "USB SERIAL" and "USB FTDI" to generate
usbserial.ko and ftdi_sio.ko. I also
> disabled "disp" module because it returned errors and enabled "PREEMPT" to
match the "modinfo vermagic"
> make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- -j4 uImage
> make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- modules_prepare
> make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- modules
> make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- INSTALL_MOD_PATH=output
modules_install
> ---
>
> From several compilations, I had problems loading the module ("disagrees
about version of symbol module
> layout"). First I saw the version is "3.4.39+". I tried to change the
kernel release version to "3.4.39".
> Further, I tried to change only the "module_layout" id
>
(http://stackoverflow.com/questions/2720177/module-layout-version-incompatibility/11115750#11115750),
> but some other errors blowed up (disagrees about symbol version). I
realized that this is the wrong way.
>
> I think all of this is happening because the linux headers aren't exactly
the same as the used to build
> originally. Is it right?
>
> How to investigate further? I can send "modinfo" or "readelf" info.
>
> To simplify, can somebody that generated this Linux version just send the
"usbserial.ko" and
> "ftdi_sio.ko" for this tablet model (specified above)?
>
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