Tutorial: how to end the execution of the LINUX driver?

Tutorial: how to end the execution of the LINUX driver? -- Linux general technology-Linux technology and application information. For details, refer to the following section. Recently, I was working on a project that was driven by the linuxTV-based digital TV decoder chip.
When changing the platform, I press the add or remove button on the program to switch the decoder chip to the next server and start playing the video.
The problem is: If I press a few program buttons consecutively, the system will switch to the next one in sequence until the caster starts to play. Instead of directly broadcasting the last server.

Dear heroes:
How can this problem be solved? Can linux drivers be interrupted and called again at any time?
Can I solve this problem without modifying the function of controlling the decoder chip in the driver?

I have just started learning. Please give me more advice. Thank you!