On Fri, Sep 10, 2004 at 12:09:50PM +0100, Russell King wrote:
> On Fri, Sep 10, 2004 at 12:08:19PM +0100, Luke Kenneth Casson Leighton wrote:
> > hi,
> > 
> > has anyone noticed that it's impossible (without hacking) to remove
> > CONFIG_SERIAL?
> > 
> > remove the entries or set all SERIAL config entries to "n"...
> > hit make...
> > CONFIG_SERIAL_8250 gets set to "m", CONFIG_SERIAL gets set to "y"!
> > 
> > seeerrrriiialllll muuuusssstttt dieeeeeee kill kill kill.
> 
> No idea - you've given very little information to go on.  I doubt
> you're building an x86 kernel... Mind giving some clues and maybe
> a copy of your .config file?
 
 x86 kernel, debian default config with legacy stuff like

 sure.

> I regularly moan about overuse of the Kconfig "select" statement
> and at a guess you've just been bitten by this.  Feel free to moan
> like merry hell about it.

 bitch, bitch, bitch.

> > there are 64 serial devices created.
> 
> Why are you seeing 64 serial devices created?  

 i don't know.

 but also 64 ttyNN entries are being created.

 presumably this is because of.... ah yes, here we go:
 include/linux/tty.h

 MAX_NR_USER_CONSOLES 63 with an indication "serial consoles must start
 at 64".

> You should only see
> about 16 or so in most sane configurations.

 well i've managed to remove enough config options to stop /dev/ttyS**
 entries from actually happening.

 but it hasn't stopped CONFIG_SERIAL from actually being defined
 by the Kconfig stuff.

 so whilst i have a "solution" there's still legacy code being compiled,
 plus i still don't have a solution for 64 ttys (62 of which are totally
 unnecessary) being created by udev.

 l.