1) What is the exact use case behind this interrupt implementation ( I'm asking because in general, for LIN code in PSoC4 ,you might not need this scb_tx/scb_rx custom interrupt routine handling in main.c file, you can refer a PSoC4 LIN slave code example for reference). So I assume there is a specific use case (for example using LIN Slave to wake up the PSoC 4 Device from Deep Sleep ). Can you please clarify?
2) Would it be possible to share the PSoC project file? I will try to reproduce the issue. Also which device is being used?
3) When you say it triggers repeatedly, how do you observe that? Kindly clarify in order for us to correctly reproduce the issue.