It's a bug of printk?

Hi, I need 2 consoles for 2 individual serial ports that is registered by register_console(). The console for the 1st serial port is registered at first. I can see the output from the serial port #1 before the console for the 2nd serial port is registered. However, I saw duplicated output

It's a bug of printk?

Hi, I need 2 consoles for 2 individual serial ports that is registered by register_console(). The console for the 1st serial port is registered at first. I can see the output from the serial port #1 before the console for the 2nd serial port is registered. However, I saw duplicated output