Bug#525958: (no subject)

[David Miller <davem@davemloft.net>]

There is no reason whatsoever to enable the CONFIG_PROM_CONSOLE
option in the kernel.

By definition it can only cause problems and conflicts with other
console drivers.

For one example, it unconditionally gets registered as a real console
before the Sun Hypervisor console driver has a chance to register.
The kernel takes whatever real console registers first, as the highest
priority console (unless specified otherwise on the command line).

It specifically creates this problem because unlike the framebuffer
and serial console drivers, it does not have a way to know whether
it should register or not.  The serial and framebuffer drivers check
the PROM indicated device node of the console device, and it only
registers the device as the console if it matches the value of the
'output-device' PROM environment variable setting.

Therefore, having CONFIG_PROM_CONSOLE enabled in the tree is going
to do nothing other than constantly create problems and conflicts
like this.  It needs to be turned off, forever.