Out of kernel module not working after upgrade

edited January 2021 in Supported devices

Hi Support,

I am trying to build a touch screen driver after upgrading emteria to the latest version (raspi 3B).
Kernel Version prev: 4.9.76, now 4.9.196

So I downloaded the source code from here: https://github.com/emteria/kernel_brcm_rpi/
and used bcm2709_defconfig to compile.

Unfortunately the device crashes and restarts after insmod.

If I create just a hello world module as below:

    #include <linux/module.h>   /* Needed by all modules */
    #include <linux/kernel.h>   /* Needed for KERN_INFO */

    //MODULE_INFO(vermagic, "4.9.196-v7+ SMP preempt mod_unload ARMv7 p2v8 ");

    int init_hello(void)
        printk(KERN_ERR "Hello World\n");
            pr_info("Hello World pr_info\n");
        return 0;

    void cleanup_hello(void)
        printk(KERN_ERR "Goodbye world 1.\n");


The device doesn't crash, but the "hello world" is never printed in dmesg.

Can you please share:
a) If there are any dmesg log files that remain after reboot
b) advise which toolchain you are using for cross compiling
c) share the .config you are using for your kernel.


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