On Mon, Sep 3, 2012 at 2:15 PM, Jiri Slaby [off-list ref] wrote:

On 09/03/2012 02:44 AM, Joe Millenbach wrote:

quoted

The option allows you to remove TTY and compile without errors. This
saves space on systems that won't support TTY interfaces anyway.
bloat-o-meter output is below.

...

quoted

--- a/drivers/tty/Kconfig
+++ b/drivers/tty/Kconfig

@@ -1,3 +1,14 @@
+config TTY
+     bool "Enable TTY" if EXPERT
+     default y
+     ---help---
+       Allows you to remove TTY support which can save space, and
+       blocks features that require TTY from inclusion in the kernel.
+       TTY is required for any text terminals or serial port
+       communication. Most users should leave this enabled.
+
+if TTY
+
 config VT
      bool "Virtual terminal" if EXPERT
      depends on !S390 && !UML

@@ -355,6 +366,8 @@ config TRACE_SINK
        If you select this option, you need to select
        "Trace data router for MIPI P1149.7 cJTAG standard".

+endif # TTY
+
 config PPC_EPAPR_HV_BYTECHAN
      tristate "ePAPR hypervisor byte channel driver"
      depends on PPC

Hmm, I wonder why do not you include EHV in the depends-on-tty list?

thanks,
--
js
suse labs

I do not have a Power PC system to test on, so during my testing I did
not notice that option would need TTY also.  Thanks for pointing that
out.  Before I spin a new patch is there anything else I should add?
I do not know of a way for me to easily test all the different CPU
specific configurations on my x86 based machines.

Joe