Hi Greg, The RS485 mode can be switched on/off from userspace by using the flag SER_RS485_ENABLED, therefore I've removed those #ifdefs in the patch. Regards On Mon, Jan 14, 2013 at 1:33 PM, Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx> wrote: > On Mon, Jan 14, 2013 at 09:21:52AM +1000, Kevin Nguyen wrote: >> Hi >> >> I've attached the patch that adds support RS485 communication in >> ColdFire serial driver. >> >> As defined in Documentation/serial/serial-rs485.txt, switching between >> read or write mode can be done by toggling RTS signal that is >> supported by ColdFire chips. >> >> I actually wrote it more than a year ago (on Linux 3.2) but haven't >> seen any similar patch for ColdFire microcontrollers so that I think >> it would be useful for someone using this serial driver for RS485 >> communication. It is tested on my MCF5271 board. >> >> Your comments are appreciated. > > Is there any way to do this so that the option can be enabled at > runtime, instead of build time? Also, getting rid of a lot of the > #ifdefs in the .c file would be great to accomplish. > > thanks, > > greg k-h -- Quoc-Viet (Kevin) Nguyen
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