From 7d3d897a4697e4ff746e5e82f116b2346ed28150 Mon Sep 17 00:00:00 2001 From: Benjamin Herrenschmidt Date: Wed, 14 Mar 2012 18:37:04 +1100 Subject: powerpc/hvc_udbg: Don't crash when udbg_putc is NULL Also while at it, add some help text indicating why you shouldn't enable that driver under normal circumstances Signed-off-by: Benjamin Herrenschmidt --- drivers/tty/hvc/Kconfig | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'drivers/tty/hvc/Kconfig') diff --git a/drivers/tty/hvc/Kconfig b/drivers/tty/hvc/Kconfig index 8ea7f078b233..48cb8d3d1758 100644 --- a/drivers/tty/hvc/Kconfig +++ b/drivers/tty/hvc/Kconfig @@ -71,6 +71,10 @@ config HVC_UDBG depends on PPC && EXPERIMENTAL select HVC_DRIVER default n + help + This is meant to be used during HW bring up or debugging when + no other console mechanism exist but udbg, to get you a quick + console for userspace. Do NOT enable in production kernels. config HVC_DCC bool "ARM JTAG DCC console" -- cgit v1.2.1