Serial driver (kernel 2.4 -> kernel 2.6)

[sioloki]

Hi,

A few years ago, I have modified the linux kernel 2.4 to add a driver for an UART. I 've modified serial.c.
Now, I have the linux kernel 2.6 and I want add my driver. I can't find the serial.c. Is it replaced by 8250.c ?

Thank's

Sioloki

[Rubberman]

The kernel-driver interfaces on 2.6 are considerably different from 2.4. I don't know if the 8250.c code replaces the serial.c code or not. If so, it will still differ considerably. In any case, 2.6 supports a LOT more hardware than 2.4 did. You might just try configuring and building the new kernel as-is and see if your gear is handled properly.

[sioloki]

My UART was already supported by Linux 2.4 but there is a bug on the serial board, so I must adjust the serial driver to correct it.

[Rubberman]

Well, then it should still be supported on the 2.6 and later kernels. You can get the source for the kernel you will be using, and then modify that. Bear in mind that there will be some differences in the low-level kernel code between the 2.4 and 2.6 and later versions which will require careful consideration as you modify the kernel code.