Hi All,
Thank you for the insight. You are right, the kernel did have the
omap_dm_timer symbols.
My error was that the symbols I required were exported as EXPORT_SYMBOL_GPL and
I had not declared it as my license as MODULE_LICENSE("GPL") in my kernel
module. As a result, my kernel module was not allowed to use those
function symbols.
Cheers,
Adam
On Tuesday, January 5, 2016 at 10:34:06 AM UTC-5, [email protected] wrote:
>
> Hi All,
>
> I am trying to write a kernel module that uses the Beagle Bone Black's
> DMTimer to capture the trigger time of an input signal. When I try to
> install the kernel module, I receive the following errors:
>
>
> [420546.913700] dmtimer_query: Unknown symbol
> omap_dm_timer_request_specific (err 0)
> [422324.347351] dmtimer_query: Unknown symbol omap_dm_timer_stop (err 0)
>
>
>
> It looks like my kernel version is not compiled with DMTimer support. I
> am using kernel "4.1.11-bone-rt-r16". Would my problem be solved by
> switching to another precompiled kernel? If so, which kernel should I use?
> Do I need to recompile the linux kernel to include DMTimer support?
>
> Thank you for the assistance,
> Adam
>
>
>
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