Merging Technologies

One more problem: driver cannot be compiled on kernel 4.20.x and 5.x /media/linux/Downloads/Temp/ravenna-alsa-lkm/driver/MTAL_LKernelAPI.c: In function ‘MTAL_LK_GetCounterTime’: /media/linux/Downloads/Temp/ravenna-alsa-lkm/driver/MTAL_LKernelAPI.c:190:5: error: implicit declaration of function ‘get...

I am not familiar yet with details of other ALSA drivers to know why this occurs, but when attempting to use the Ravenna ALSA driver with jackd (JACK audio connection kit daemon), this error occurs and the jack server will not use the Ravenna driver: configuring for 48000Hz, period = 1024 frames (21...

Newer kernels have changed the API to request system time in order to handle the roll-over of the 32 bit time structure in 2038. This change is needed for the driver to compile on 4.18 and newer kernels: diff --git a/driver/MTAL_LKernelAPI.c b/driver/MTAL_LKernelAPI.c index 6f8cc20..be0a44e 100644 -...

After stopping the butler, I see this message when attempting to unload the driver: rmmod: ERROR: Module MergingRavennaALSA is in use I do not see any other drivers in the "used by" column in the output of lsmod, although I do not know what the "3" specifies: Module Size Used by ...